Article(id=1312006222337900988, tenantId=1146029695717560320, journalId=1311385948879159419, issueId=1312006144101540779, articleNumber=null, orderNo=null, doi=10.13430/j.cnki.jpgr.20260623002, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1782144000000, receivedDateStr=2026-06-23, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1790736259301, onlineDateStr=2026-09-30, pubDate=1784131200000, pubDateStr=2026-07-16, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790736259301, onlineIssueDateStr=2026-09-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790736259301, creator=13701087609, updateTime=1790736259301, updator=13701087609, issue=Issue{id=1312006144101540779, tenantId=1146029695717560320, journalId=1311385948879159419, year='2026', volume='27', issue='7', pageStart='1311', pageEnd='1484', issueExtLink='null', onlineDate='null', pubDate='1784131200000', pubDateStr='2026-07-16', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1790736240648, creator='13701087609', updateTime=1790739525097, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1312019920167203355, tenantId=1146029695717560320, journalId=1311385948879159419, issueId=1312006144101540779, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1312019920167203356, tenantId=1146029695717560320, journalId=1311385948879159419, issueId=1312006144101540779, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1399, endPage=1414, ext={EN=ArticleExt(id=1312006222526644669, articleId=1312006222337900988, tenantId=1146029695717560320, journalId=1311385948879159419, language=EN, title=Comprehensive Phenotypic Evaluation and Core Collection Construction of Tetraploid Agropyron Germplasm Resources, columnId=1312006179899924628, journalTitle=Journal of Plant Genetic Resources, columnName=RESEARCH ARTICLES, runingTitle=null, highlight=null, articleAbstract=

Species of the genus Agropyron Gaertn. are not only recognized as premium perennial forages worldwide but also serve as critical exogenous donors for broadening the genetic base and improving the comprehensive traits of wheat through wide hybridization. To promote the efficient utilization of Agropyron germplasm resources, this study investigated 206 accessions of diverse origins (excluding A. mongolicum). Ploidy levels were first identified using flow cytometry in combination with cytological observations. Subsequently, a comprehensive evaluation of tetraploid Agropyron germplasm was performed based on 16 phenotypic traits through diversity, correlation, cluster, and membership function analyses. Finally, the optimal strategy for constructing a tetraploid Agropyron core collection was screened from 384 combinations involving two genetic distances, three sampling methods, eight sampling proportions, and eight clustering methods, followed by a representativeness validation. The results indicated that the tested germplasm consisted of 187 tetraploids, 8 diploids, and 11 hexaploids. The coefficient of variation for the 16 phenotypic traits in the tetraploid accessions ranged from 15.78% to 38.26%, with an average of 24.42%. The genetic diversity index ranged from 1.58 to 1.99, with an average of 1.83, indicating high phenotypic diversity. Through systematic comparison, the strategy of “Euclidean distance + multiple cluster priority sampling +15% sampling proportion+single distance method” was identified as the optimal strategy, leading to the construction of a core collection containing 28 accessions. Multi-dimensional validation confirmed that the core collection effectively represents the genetic characteristics and population structure of the initial collection. Five elite germplasm accessions with high comprehensive scores, namely Z559, Z1511, LF112, Z1780 and LF1782, were screened out via subordinate function comprehensive evaluation. All of them were included in the core germplasm collection, which further verified the superiority of the core germplasm. In summary, the tetraploid Agropyron core collection developed in this study provides a reliable representation of the original population, offering a theoretical basis and material foundation for the preservation, evaluation, and genetic improvement of Agropyron germplasm.

, authors=Guikuan REN1, Bing HAN1, Jingya LIU1, He LI1, Xinming YANG1, Haiming HAN1, Jinpeng ZHANG1, Runqi ZHANG1, Shenghui ZHOU1, Lihui LI1, 2, authorsList=Guikuan REN, Bing HAN, Jingya LIU, He LI, Xinming YANG, Haiming HAN, Jinpeng ZHANG, Runqi ZHANG, Shenghui ZHOU, Lihui LI, authorCompany=null, correspAuthors=Shenghui ZHOU, Lihui LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1312006225542349254, articleId=1312006222337900988, tenantId=1146029695717560320, journalId=1311385948879159419, language=CN, title=四倍体冰草属种质资源的表型综合评价与核心种质构建, columnId=1312006180101251222, journalTitle=植物遗传资源学报, columnName=论文, runingTitle=null, highlight=null, articleAbstract=

冰草属物种不仅在全球范围内被视为重要的优良牧草,更是通过远缘杂交手段拓宽小麦基因源基础、改良综合性状的关键外源供体。为促进冰草属种质资源的高效利用,以206份不同来源的冰草属种质资源(不包含沙芦草)作为研究对象,首先利用流式细胞术(Flow cytometry)结合细胞学进行倍性鉴定;随后基于16个表型性状,通过多样性分析、相关性分析、聚类分析和隶属函数分析,对四倍体冰草属种质资源进行综合分析评价;最后从由2种遗传距离、3种取样方法、8个取样比例及8种聚类方法组合的384种不同策略中,筛选构建四倍体冰草属核心种质的最佳方案,并验证其代表性。结果表明,供试冰草属种质资源包括四倍体187份、二倍体8份、六倍体11份。四倍体冰草属种质的16个表型性状变异系数介于15.78%~38.26%,平均为24.42%;遗传多样性指数介于1.58~1.99,平均为1.83,表明四倍体冰草属种质资源具有较高的表型多样性。通过系统比较,确定“欧氏距离+多次聚类优先取样法+15%取样比例+最短距离法”作为构建四倍体冰草属核心种质的最佳策略,并由此构建了包含28份资源的核心种质。多维度的验证结果表明,核心种质能够有效代表原始种质的遗传特征和群体结构。通过隶属函数综合评价筛选出综合得分较高的5份优异种质:Z559、Z1511、LF112、Z1780、LF1782,均包含在核心种质群体内,进一步证明了核心种质的优异性。本研究构建的四倍体冰草属核心种质能较为完整地代表原始种质群体,为冰草属种质资源的保存、评价及遗传改良提供了理论依据和材料基础。

, authors=任桂宽1, 韩冰1, 刘婧雅1, 李贺1, 杨欣明1, 韩海明1, 张锦鹏1, 张润琪1, 周升辉1, 李立会1, 2, authorsList=任桂宽, 韩冰, 刘婧雅, 李贺, 杨欣明, 韩海明, 张锦鹏, 张润琪, 周升辉, 李立会, authorCompany=null, correspAuthors=周升辉, 李立会, authorNote=

研究方向为小麦种质资源,E-mail:

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李立会,研究方向为小麦种质资源,E-mail:
周升辉,研究方向为小麦种质资源,E-mail:
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研究方向为小麦种质资源,E-mail:

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研究方向为小麦种质资源,E-mail:

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Development of the genetic analysis softwares QGA Station 2.0 and GMDR-GPU. Hangzhou: Zhejiang University, 2012, articleTitle=null, refAbstract=null), Reference(id=1312006239840731728, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2021, volume=22, issue=1, pageStart=174, pageEnd=182, url=null, language=null, rfNumber=23, rfOrder=40, authorNames=李萌, 秦慧彬, 王宇楠, 穆志新, 杜慧玲, journalName=植物遗传资源学报, refType=null, unstructuredReference=李萌, 秦慧彬, 王宇楠, 穆志新, 杜慧玲. 基于农艺性状指标的山西高粱地方品种核心种质构建. 植物遗传资源学报, 2021, 22(1):174-182, articleTitle=基于农艺性状指标的山西高粱地方品种核心种质构建, refAbstract=null), Reference(id=1312006239945589329, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2021, volume=22, issue=1, pageStart=174, pageEnd=182, url=null, language=null, rfNumber=23, rfOrder=41, authorNames=Li M, Qin H B, Wang Y N, Mu Z X, Du H L, journalName=Journal of Plant Genetic Resources, refType=null, unstructuredReference=Li M, Qin H B, Wang Y N, Mu Z X, Du H L. A core collection of sorghum landraces formed by taking use of agronomic traits in Shanxi province. Journal of Plant Genetic Resources, 2021, 22(1): 174-182, articleTitle=A core collection of sorghum landraces formed by taking use of agronomic traits in Shanxi province, refAbstract=null), Reference(id=1312006240016892498, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=24, rfOrder=42, authorNames=胡栋, 路娣, 岳远志, 李晓斐, 马剑, 陈鹏, 单立山, journalName=果树学报, refType=null, unstructuredReference=胡栋, 路娣, 岳远志, 李晓斐, 马剑, 陈鹏, 单立山. 108份梨种质资源遗传多样性分析和核心种质的构建. 果树学报, 2026, https://doi.org/10.13925/j.cnki.gsxb.20250567, articleTitle=108份梨种质资源遗传多样性分析和核心种质的构建, refAbstract=null), Reference(id=1312006240092389971, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=24, rfOrder=43, authorNames=Hu D, Lu D, Yue Y Z, Li X F, Ma J, Chen P, Shan L S, journalName=Journal of Fruit Science, refType=null, unstructuredReference=Hu D, Lu D, Yue Y Z, Li X F, Ma J, Chen P, Shan L S. Genetic diversity analysis and core collection construction of 108 pear germplasm resources. Journal of Fruit Science, 2026, https://doi.org/10.13925/j.cnki.gsxb.20250567, articleTitle=Genetic diversity analysis and core collection construction of 108 pear germplasm resources, refAbstract=null), Reference(id=1312006240172081748, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=25, rfOrder=44, authorNames=唐有林, 王蕾, 王寒冬, 徐金青, 陈同睿, 边海燕, 卢露, 王一航, 杨雁, 郭嘉贵, 沈裕虎, journalName=应用与环境生物学报, refType=null, unstructuredReference=唐有林, 王蕾, 王寒冬, 徐金青, 陈同睿, 边海燕, 卢露, 王一航, 杨雁, 郭嘉贵, 沈裕虎. 基于表型性状构建燕麦核心种质的策略优化及代表性评价. 应用与环境生物学报,2026, https://doi.org/10.19675/j.cnki.1006-687x.2025.11003, articleTitle=基于表型性状构建燕麦核心种质的策略优化及代表性评价, refAbstract=null), Reference(id=1312006240251773525, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=25, rfOrder=45, authorNames=Tang Y L, Wang L, Wang H D, Xu J Q, Chen T R, Bian H Y, Lu L, Wang Y H, Yang Y, Guo J G, Shen Y H, journalName=Chinese Journal of Applied and Environmental Biology, refType=null, unstructuredReference=Tang Y L, Wang L, Wang H D, Xu J Q, Chen T R, Bian H Y, Lu L, Wang Y H, Yang Y, Guo J G, Shen Y H. Strategy optimization and representativeness evaluation for constructing oat core germplasm based on phenotypic traits. Chinese Journal of Applied and Environmental Biology, 2026, https://doi.org/10.19675/j.cnki.1006-687x.2025.11003, articleTitle=Strategy optimization and representativeness evaluation for constructing oat core germplasm based on phenotypic traits, refAbstract=null), Reference(id=1312006240335659606, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2006, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=26, rfOrder=46, authorNames=王建成, journalName=构建植物遗传资源核心种质新方法的研究, refType=null, unstructuredReference=王建成. 构建植物遗传资源核心种质新方法的研究. 杭州: 浙江大学, 2006, articleTitle=null, refAbstract=null), Reference(id=1312006240432128599, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2006, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=26, rfOrder=47, authorNames=Wang J C, journalName=Studies on new methods for constructing corecollection of plant germplasm resources, refType=null, unstructuredReference=Wang J C. Studies on new methods for constructing corecollection of plant germplasm resources. Hangzhou: Zhejiang University, 2006, articleTitle=null, refAbstract=null), Reference(id=1312006240507626072, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2021, volume=37, issue=1, pageStart=282, pageEnd=288, url=null, language=null, rfNumber=27, rfOrder=48, authorNames=郑英转, 吕燕, 杨东旭, 李国威, 王洪洋, 李灿辉, journalName=生物技术通报, refType=null, unstructuredReference=郑英转, 吕燕, 杨东旭, 李国威, 王洪洋, 李灿辉. 基于液氮研磨法的流式细胞术检测马铃薯倍性的研究. 生物技术通报, 2021, 37(1): 282-288, articleTitle=基于液氮研磨法的流式细胞术检测马铃薯倍性的研究, refAbstract=null), Reference(id=1312006242155987545, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2021, volume=37, issue=1, pageStart=282, pageEnd=288, url=null, language=null, rfNumber=27, rfOrder=49, authorNames=Zheng Y Z, Lyu Y, Yang D X, Li G W, Wang H Y, Li C H, journalName=Biotechnology Bulletin, refType=null, unstructuredReference=Zheng Y Z, Lyu Y, Yang D X, Li G W, Wang H Y, Li C H. Study on the identification of potato ploidy using flow cytometry based on liquid nitrogen grinding method. Biotechnology Bulletin, 2021, 37(1): 282-288, articleTitle=Study on the identification of potato ploidy using flow cytometry based on liquid nitrogen grinding method, refAbstract=null), Reference(id=1312006242260845146, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2011, volume=27, issue=9, pageStart=212, pageEnd=215, url=null, language=null, rfNumber=28, rfOrder=50, authorNames=刘祎, 刘争辉, 何旭, Dragovich A, journalName=利用流式细胞术鉴定黑麦草倍性方法的研究. 中国农学通报, refType=null, unstructuredReference=刘祎, 刘争辉, 何旭, Dragovich A.Yu., 杨起简. 利用流式细胞术鉴定黑麦草倍性方法的研究. 中国农学通报, 2011, 27(9): 212-215, articleTitle=Yu., 杨起简, refAbstract=null), Reference(id=1312006242353119835, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2011, volume=27, issue=9, pageStart=212, pageEnd=215, url=null, language=null, rfNumber=28, rfOrder=51, authorNames=Liu Y, Liu Z H, He X, Dragovich A Y, Yang Q J, journalName=Chinese Agricultural Science Bulletin, refType=null, unstructuredReference=Liu Y, Liu Z H, He X, Dragovich A Y, Yang Q J. DNA content and ploidy determination of ryegrass (Lolium perenne) by flow cytometry. Chinese Agricultural Science Bulletin, 2011, 27(9): 212-215, articleTitle=DNA content and ploidy determination of ryegrass (Lolium perenne) by flow cytometry, refAbstract=null), Reference(id=1312006242441200220, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2013, volume=34, issue=6, pageStart=1, pageEnd=3, 6, url=null, language=null, rfNumber=29, rfOrder=52, authorNames=高友汉, 韩冰, journalName=畜牧与饲料科学, refType=null, unstructuredReference=高友汉, 韩冰. 利用流式细胞仪鉴定9个居群蒙古冰草的染色体倍性. 畜牧与饲料科学, 2013, 34(6): 1-3, 6, articleTitle=利用流式细胞仪鉴定9个居群蒙古冰草的染色体倍性, refAbstract=null), Reference(id=1312006242508309085, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2013, volume=34, issue=6, pageStart=1, pageEnd=3, 6, url=null, language=null, rfNumber=29, rfOrder=53, authorNames=Gao Y H, Han B, journalName=Animal Husbandry and Feed Science, refType=null, unstructuredReference=Gao Y H, Han B. Chromosome ploidy determination of 9 populations of Agropyron mongolicum Keng by flow cytometry. Animal Husbandry and Feed Science, 2013, 34(6): 1-3, 6, articleTitle=Chromosome ploidy determination of 9 populations of Agropyron mongolicum Keng by flow cytometry, refAbstract=null), Reference(id=1312006242583806558, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=30, rfOrder=54, authorNames=向清源, 尚晓岚, 李晓阳, 李钰莹, journalName=草业科学, refType=null, unstructuredReference=向清源, 尚晓岚, 李晓阳, 李钰莹. 基于流式细胞术和K-mer分析法测定三种牧草基因组大小. 草业科学,2026, https://link.cnki.net/urlid/62.1069.S.20250916.1521.004, articleTitle=基于流式细胞术和K-mer分析法测定三种牧草基因组大小, refAbstract=null), Reference(id=1312006242655109727, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=30, rfOrder=55, authorNames=Xiang Q Y, Shang X L, Li X Y, Li Y Y, journalName=Pratacultural Science, refType=null, unstructuredReference=Xiang Q Y, Shang X L, Li X Y, Li Y Y. The genome size of three forage species was determined by flow cytometry and K-mer analysis. Pratacultural Science, 2026, https://link.cnki.net/urlid/62.1069.S.20250916.1521.004, articleTitle=The genome size of three forage species was determined by flow cytometry and K-mer analysis, refAbstract=null), Reference(id=1312006242713829984, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=31, rfOrder=56, authorNames=简国燕, 张富民, 徐超, 张金波, 葛颂, 孙海芹, journalName=植物遗传资源学报, refType=null, unstructuredReference=简国燕, 张富民, 徐超, 张金波, 葛颂, 孙海芹. 小麦及野生近缘种资源的现状、保护和利用. 植物遗传资源学报, 2026, https://doi.org/10.13430/j.cnki.jpgr.20250703001, articleTitle=小麦及野生近缘种资源的现状、保护和利用, refAbstract=null), Reference(id=1312006242772550241, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=31, rfOrder=57, authorNames=Jian G Y, Zhang F M, Xu C, Zhang J B, Ge S, Sun H Q, journalName=Journal of Plant Genetic Resources, refType=null, unstructuredReference=Jian G Y, Zhang F M, Xu C, Zhang J B, Ge S, Sun H Q. Status, conservation, and utilization of wheat and its wild relatives. Journal of Plant Genetic Resources, 2026, https://doi.org/10.13430/j.cnki.jpgr.20250703001, articleTitle=Status, conservation, and utilization of wheat and its wild relatives, refAbstract=null), Reference(id=1312006242843853410, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2024, volume=25, issue=2, pageStart=193, pageEnd=211, url=null, language=null, rfNumber=32, rfOrder=58, authorNames=康西璐, 韩舶辉, 王筱, 韩海明, 周升辉, 鲁玉清, 刘伟华, 李秀全, 杨欣明, 张锦鹏, 李立会, journalName=植物遗传资源学报, refType=null, unstructuredReference=康西璐, 韩舶辉, 王筱, 韩海明, 周升辉, 鲁玉清, 刘伟华, 李秀全, 杨欣明, 张锦鹏, 李立会. 冰草1PS和1PL易位染色体导入不同小麦背景改良株型的遗传效应评价. 植物遗传资源学报, 2024, 25(2): 193-211, articleTitle=冰草1PS和1PL易位染色体导入不同小麦背景改良株型的遗传效应评价, refAbstract=null), Reference(id=1312006242923545187, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2024, volume=25, issue=2, pageStart=193, pageEnd=211, url=null, language=null, rfNumber=32, rfOrder=59, authorNames=Kang X L, Han B H, Wang X, Han H M, Zhou S H, Lu Y Q, Liu W H, Li X Q, Yang X M, Zhang J P, Li L H, journalName=Journal of Plant Genetic Resources, refType=null, unstructuredReference=Kang X L, Han B H, Wang X, Han H M, Zhou S H, Lu Y Q, Liu W H, Li X Q, Yang X M, Zhang J P, Li L H. Evaluation of Agropyron cristatum 1PS and 1PL translocation chromosome in different wheat backgrounds for plant architecture improvement. Journal of Plant Genetic Resources, 2024, 25(2): 193-211, articleTitle=Evaluation of Agropyron cristatum 1PS and 1PL translocation chromosome in different wheat backgrounds for plant architecture improvement, refAbstract=null), Reference(id=1312006242994848356, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2018, volume=19, issue=6, pageStart=1038, pageEnd=1044, url=null, language=null, rfNumber=33, rfOrder=60, authorNames=孙洋洋, 陈红新, 刘伟华, 韩海明, 周升辉, 杨欣明, 李秀全, 张锦鹏, 李立会, journalName=植物遗传资源学报, refType=null, unstructuredReference=孙洋洋, 陈红新, 刘伟华, 韩海明, 周升辉, 杨欣明, 李秀全, 张锦鹏, 李立会. 小麦-冰草T7PL·7AL罗伯逊易位系的分子细胞学鉴定. 植物遗传资源学报, 2018, 19(6): 1038-1044, articleTitle=小麦-冰草T7PL·7AL罗伯逊易位系的分子细胞学鉴定, refAbstract=null), Reference(id=1312006243070345829, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2018, volume=19, issue=6, pageStart=1038, pageEnd=1044, url=null, language=null, rfNumber=33, rfOrder=61, authorNames=Sun Y Y, Chen H X, Liu W H, Han H M, Zhou S H, Yang X M, Li X Q, Zhang J P, Li L H, journalName=Journal of Plant Genetic Resources, refType=null, unstructuredReference=Sun Y Y, Chen H X, Liu W H, Han H M, Zhou S H, Yang X M, Li X Q, Zhang J P, Li L H. Cytological identification of wheat-Agropyroncristatum T7PL·7AL robertsonian translocation line. Journal of Plant Genetic Resources, 2018, 19(6): 1038-1044, articleTitle=Cytological identification of wheat-Agropyroncristatum T7PL·7AL robertsonian translocation line, refAbstract=null), Reference(id=1312006243133260390, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2023, volume=24, issue=4, pageStart=944, pageEnd=953, url=null, language=null, rfNumber=34, rfOrder=62, authorNames=王棕瑶, 徐世锐, 吉夏洁, 韩海明, 张锦鹏, 周升辉, 杨欣明, 李秀全, 李立会, 刘伟华, journalName=植物遗传资源学报, refType=null, unstructuredReference=王棕瑶, 徐世锐, 吉夏洁, 韩海明, 张锦鹏, 周升辉, 杨欣明, 李秀全, 李立会, 刘伟华. 小麦-冰草不同2P附加系的特征分析.植物遗传资源学报, 2023, 24(4): 944-953, articleTitle=小麦-冰草不同2P附加系的特征分析, refAbstract=null), Reference(id=1312006243187786343, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2023, volume=24, issue=4, pageStart=944, pageEnd=953, url=null, language=null, rfNumber=34, rfOrder=63, authorNames=Wang Z Y, Xu S R, Ji X J, Han H M, Zhang J P, Zhou S H, Yang X M, Li X Q, Li L H, Liu W H, journalName=Journal of Plant Genetic Resources, refType=null, unstructuredReference=Wang Z Y, Xu S R, Ji X J, Han H M, Zhang J P, Zhou S H, Yang X M, Li X Q, Li L H, Liu W H. Characterization of different 2P wheat-Agropyroncristatum addition lines. Journal of Plant Genetic Resources, 2023, 24(4): 944-953, articleTitle=Characterization of different 2P wheat-Agropyroncristatum addition lines, refAbstract=null), Reference(id=1312006243259089512, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2025, volume=53, issue=6, pageStart=71, pageEnd=81, url=null, language=null, rfNumber=35, rfOrder=64, authorNames=王通锐, 王星, 胡鹏飞, 叶雨浓, 高雪芹, 张金青, 伏兵哲, journalName=64份冰草属牧草种质资源表型性状的遗传多样性, refType=null, unstructuredReference=王通锐, 王星, 胡鹏飞, 叶雨浓, 高雪芹, 张金青, 伏兵哲. 64份冰草属牧草种质资源表型性状的遗传多样性. 西北农林科技大学学报: 自然科学版, 2025, 53(6): 71-81, articleTitle=null, refAbstract=null), Reference(id=1312006243326198377, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2025, volume=53, issue=6, pageStart=71, pageEnd=81, url=null, language=null, rfNumber=35, rfOrder=65, authorNames=Wang T Y, Wang X, Hu P F, Ye Y N, Gao X Q, Zhang J Q, Fu B Z, journalName=Genetic diversity of phenotypic traits of 64 Agropyron germplasm resources, refType=null, unstructuredReference=Wang T Y, Wang X, Hu P F, Ye Y N, Gao X Q, Zhang J Q, Fu B Z. Genetic diversity of phenotypic traits of 64 Agropyron germplasm resources. Journal of Northwest A&F University: Natural Science Edition, 2025, 53(6): 71-81, articleTitle=null, refAbstract=null), Reference(id=1312006243410084458, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=34, issue=3, pageStart=865, pageEnd=880, url=null, language=null, rfNumber=36, rfOrder=66, authorNames=吴昌忠, 闫伟红, 赵彦, 李志勇, 武自念, 潘文喧, 霍春燃, 闫文昊, journalName=草地学报, refType=null, unstructuredReference=吴昌忠, 闫伟红, 赵彦, 李志勇, 武自念, 潘文喧, 霍春燃, 闫文昊. 194份扁穗冰草种质资源表型多样性分析、综合评价及核心种质构建. 草地学报, 2026, 34(3): 865-880, articleTitle=194份扁穗冰草种质资源表型多样性分析、综合评价及核心种质构建, refAbstract=null), Reference(id=1312006243485581931, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, doi=null, pmid=null, pmcid=null, year=2026, volume=34, issue=3, pageStart=865, pageEnd=880, url=null, language=null, rfNumber=36, rfOrder=67, authorNames=Wu C Z, Yan W H, Zhao Y, Li Z Y, Wu Z N, Pan W X, Huo C R, Yan W H, journalName=Gaertn. accessions in Inner Mongolia, refType=null, unstructuredReference=Wu C Z, Yan W H, Zhao Y, Li Z Y, Wu Z N, Pan W X, Huo C R, Yan W H. Phenotypic diversity assessment, multivariate evaluation, and core germplasm establishment in 194 Agropyron cristatum (L.) Gaertn. accessions in Inner Mongolia, China. 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A、B、C 分别代表二倍体、四倍体、六倍体冰草属种质;左列:DAPI染色染色体荧光显微图像;中间列:侧向散射光-第二荧光通道散点图,红色散点为细胞碎片/杂质颗粒,紫色散点为目标细胞核群体,R1为目标细胞核圈选门;右列:DNA荧光信号分布直方图

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*表示在P≤0.05水平显著相关,**表示在P≤0.01水平极显著相关

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外圈为种质资源编号

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Test materials information

, figureFileSmall=null, figureFileBig=null, tableContent=

来源类别

Source type

来源地

Source

份数

Number

中国China新疆维吾尔自治区48
内蒙古自治区46
北京市35
青海省16
河北省8
宁夏回族自治区5
吉林省4
陕西省3
甘肃省3
山西省2
国外Overseas俄罗斯20
伊朗13
土耳其2
加拿大1
), ArticleFig(id=1312006233301811733, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表1, caption=

供试材料信息

, figureFileSmall=null, figureFileBig=null, tableContent=

来源类别

Source type

来源地

Source

份数

Number

中国China新疆维吾尔自治区48
内蒙古自治区46
北京市35
青海省16
河北省8
宁夏回族自治区5
吉林省4
陕西省3
甘肃省3
山西省2
国外Overseas俄罗斯20
伊朗13
土耳其2
加拿大1
), ArticleFig(id=1312006233373114902, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 2, caption=

Diversity analysis of phenotypic traits of tetraploid Agropyron germplasm

, figureFileSmall=null, figureFileBig=null, tableContent=

表型性状

Phenotypic traits

最大值

Max.

最小值

Min.

平均值

Average

极差

Range

变异系数(%)

CV

遗传多样性指数

H′

株高(cm)PH100.5018.9068.2181.6022.351.97
茎粗(cm)SD0.360.130.230.2415.831.85
旗叶长(cm)FLL35.564.0612.0131.5030.531.93
旗叶宽(cm)FLW1.420.200.541.2230.791.81
旗叶鞘长(cm)FLSL19.646.9311.9712.7116.331.70
倒二叶长(cm)SLL54.129.0416.2745.0829.741.99
倒二叶宽(cm)SLW1.740.240.621.5028.311.88
倒二叶鞘长(cm)SLSL17.505.439.2012.0716.981.75
茎秆节数 NSN5.002.003.123.0021.411.58
基部茎长(cm)BSL7.360.802.396.5638.261.73
穗长(cm)PL19.883.308.7316.5832.141.95
穗下茎长(cm)SLS51.8511.0428.9940.8127.281.92
小穗数 SN55.2020.4036.2934.8018.451.90
小穗粒数 KPS14.406.009.788.4015.781.69
小穗长(cm)SL2.300.801.361.5017.391.80
小穗宽(cm)SW1.800.270.571.5329.171.83
), ArticleFig(id=1312006233461195287, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表2, caption=

四倍体冰草属种质表型性状多样性分析

, figureFileSmall=null, figureFileBig=null, tableContent=

表型性状

Phenotypic traits

最大值

Max.

最小值

Min.

平均值

Average

极差

Range

变异系数(%)

CV

遗传多样性指数

H′

株高(cm)PH100.5018.9068.2181.6022.351.97
茎粗(cm)SD0.360.130.230.2415.831.85
旗叶长(cm)FLL35.564.0612.0131.5030.531.93
旗叶宽(cm)FLW1.420.200.541.2230.791.81
旗叶鞘长(cm)FLSL19.646.9311.9712.7116.331.70
倒二叶长(cm)SLL54.129.0416.2745.0829.741.99
倒二叶宽(cm)SLW1.740.240.621.5028.311.88
倒二叶鞘长(cm)SLSL17.505.439.2012.0716.981.75
茎秆节数 NSN5.002.003.123.0021.411.58
基部茎长(cm)BSL7.360.802.396.5638.261.73
穗长(cm)PL19.883.308.7316.5832.141.95
穗下茎长(cm)SLS51.8511.0428.9940.8127.281.92
小穗数 SN55.2020.4036.2934.8018.451.90
小穗粒数 KPS14.406.009.788.4015.781.69
小穗长(cm)SL2.300.801.361.5017.391.80
小穗宽(cm)SW1.800.270.571.5329.171.83
), ArticleFig(id=1312006233536692760, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 3, caption=

Statistical analysis on 16 phenotypic traits of different groups

, figureFileSmall=null, figureFileBig=null, tableContent=

表型性状

Phenotypic traits

第Ⅰ类

Group I

第Ⅱ类

Group Ⅱ

第Ⅲ类

Group Ⅲ

株高(cm)PH68.1670.2268.48
茎粗(cm)SD0.220.220.23
旗叶长(cm)FLL12.0011.6012.04
旗叶宽(cm)FLW0.540.520.55
旗叶鞘长(cm)FLSL11.9611.9211.98
倒二叶长(cm)SLL15.9215.8216.32
倒二叶宽(cm)SLW0.610.590.62
倒二叶鞘长(cm)SLSL9.179.179.21
茎秆节数 NSN3.113.093.12
基部茎长(cm)BSL2.382.482.40
穗长(cm)PL8.738.848.76
穗下茎长(cm)SLS28.9330.1729.18
小穗数 SN35.9835.5336.33
小穗粒数 KPS9.749.959.81
小穗长(cm)SL1.361.371.37
小穗宽(cm)SW0.560.560.57
), ArticleFig(id=1312006233607995929, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表3, caption=

不同类群16个表型性状均值统计

, figureFileSmall=null, figureFileBig=null, tableContent=

表型性状

Phenotypic traits

第Ⅰ类

Group I

第Ⅱ类

Group Ⅱ

第Ⅲ类

Group Ⅲ

株高(cm)PH68.1670.2268.48
茎粗(cm)SD0.220.220.23
旗叶长(cm)FLL12.0011.6012.04
旗叶宽(cm)FLW0.540.520.55
旗叶鞘长(cm)FLSL11.9611.9211.98
倒二叶长(cm)SLL15.9215.8216.32
倒二叶宽(cm)SLW0.610.590.62
倒二叶鞘长(cm)SLSL9.179.179.21
茎秆节数 NSN3.113.093.12
基部茎长(cm)BSL2.382.482.40
穗长(cm)PL8.738.848.76
穗下茎长(cm)SLS28.9330.1729.18
小穗数 SN35.9835.5336.33
小穗粒数 KPS9.749.959.81
小穗长(cm)SL1.361.371.37
小穗宽(cm)SW0.560.560.57
), ArticleFig(id=1312006233696076314, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 4, caption=

Comprehensive evaluation scores and rankings of 187 tetraploid Agropyron germplasm

, figureFileSmall=null, figureFileBig=null, tableContent=

库存编号

Inventory number

D值

D-value

排序

Ranking

库存编号

Inventory number

D值

D-value

排序

Ranking

库存编号

Inventory number

D值

D-value

排序

Ranking

库存编号

Inventory number

D值

D-value

排序

Ranking

LF17820.60701Z16950.417833Z15280.379165Z23970.343697
Z26090.50442LF3490.417734Z6190.378766LF3920.343398
Z17800.50183Z23560.417435Z8840.377367Z10540.343399
Z15110.49154LF15390.416736Z10430.375468Z10480.3427100
Z5590.49135LF2660.416537Z5850.373369LF3990.3425101
LF1320.48926Z5920.416038LF2550.373170Z15190.3420102
Z18130.48177Z17000.414839Z16280.369971Z8610.3402103
LF1120.47868Z16970.414540LF3040.368472Z27780.3400104
LF18040.47779Z17860.414241LF15070.368373Z6130.3389105
Z17840.477610Z15180.411242Z8720.364474Z21240.3367106
Z21210.473411Z17150.407943Z17470.364475LF1770.3363107
LF3630.472412Z17960.404844LF3610.364476Z15210.3346108
Z15270.468213LF13490.404145Z15160.363977LF4080.3343109
Z26100.462714Z19690.403746Z15530.362978Z6050.3341110
LF3270.458215Z18120.401447Z15120.360979LF3770.3337111
Z16320.456116LF14790.399348LF17810.360880LF2820.3327112
LF3300.454717LF1650.394949R1320.360081LF14980.3323113
Z8790.449918LF6260.394550Z21640.359482Z7500.3311114
Z15090.443619Z25890.393651LF5760.359383LF15130.3306115
LF18320.443320LF4030.393552Z23470.359284Z22220.3301116
Z25100.439421Z23830.392853Z16960.358085Z17450.3298117
LF2920.438022Z14980.392654Z26140.354486Z15850.3267118
Z8040.435723Z17380.390155Z15040.353687Z15140.3257119
LF2800.432224Z22300.387956Z18610.353688Z23520.3256120
Z23890.431125Z23960.387857Z16120.350489Z12670.3246121
Z19660.430926Z15250.386858Z17120.349990Z17140.3238122
Z17590.429427Z6100.385659LF810.349891Z18560.3234123
LF3620.429428Z15070.383660AC880.346292LF1850.3186124
Z17340.426829LF13210.383061AC1170.346093Z18200.3175125
Z8880.426030Z15130.382662AC1510.345694Z23880.3168126
Z15030.423331Z22580.382163Z17020.344895Z11660.3167127
Z6180.418632Z20380.379864Z5890.344096Z22590.3153128
Z6070.3146129R1620.3011144LF15230.2770159LF12890.2268174
Z15100.3124130Z15200.2996145LF3400.2752160LF4000.2248175
LF17510.3119131Z16940.2988146Z23740.2742161LF3080.2203176
Z16200.3110132LF3050.2982147LF3180.2734162Z10980.2192177
LF34330.3100133Z6220.2969148LF4120.2639163Z18190.2170178
Z20260.3086134Z15230.2949149Z21620.2610164Z15690.2088179
Z18020.3083135LF3980.2924150Z18590.2545165Z29960.1977180
Z17010.3078136LF1100.2875151Z5900.2512166Z6410.1949181
LF3580.3062137LF4050.2864152Z16860.2498167Z15010.1904182
Z15400.3046138Z18550.2862153Z17030.2494168Z18420.1883183
AC650.3042139Z11670.2851154LF4020.2452169Z16900.1794184
AC1440.3038140Z17090.2851155Z17870.2407170LF15370.1700185
AC290.3031141LF590.2811156Z22800.2405171LF14560.1597186
Z16310.3026142Z15240.2777157Z22630.2380172Z15170.1088187
Z10520.3026143Z21380.2774158Z24310.2295173
), ArticleFig(id=1312006233813516827, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表4, caption=

187份四倍体冰草属种质综合评价得分及排名

, figureFileSmall=null, figureFileBig=null, tableContent=

库存编号

Inventory number

D值

D-value

排序

Ranking

库存编号

Inventory number

D值

D-value

排序

Ranking

库存编号

Inventory number

D值

D-value

排序

Ranking

库存编号

Inventory number

D值

D-value

排序

Ranking

LF17820.60701Z16950.417833Z15280.379165Z23970.343697
Z26090.50442LF3490.417734Z6190.378766LF3920.343398
Z17800.50183Z23560.417435Z8840.377367Z10540.343399
Z15110.49154LF15390.416736Z10430.375468Z10480.3427100
Z5590.49135LF2660.416537Z5850.373369LF3990.3425101
LF1320.48926Z5920.416038LF2550.373170Z15190.3420102
Z18130.48177Z17000.414839Z16280.369971Z8610.3402103
LF1120.47868Z16970.414540LF3040.368472Z27780.3400104
LF18040.47779Z17860.414241LF15070.368373Z6130.3389105
Z17840.477610Z15180.411242Z8720.364474Z21240.3367106
Z21210.473411Z17150.407943Z17470.364475LF1770.3363107
LF3630.472412Z17960.404844LF3610.364476Z15210.3346108
Z15270.468213LF13490.404145Z15160.363977LF4080.3343109
Z26100.462714Z19690.403746Z15530.362978Z6050.3341110
LF3270.458215Z18120.401447Z15120.360979LF3770.3337111
Z16320.456116LF14790.399348LF17810.360880LF2820.3327112
LF3300.454717LF1650.394949R1320.360081LF14980.3323113
Z8790.449918LF6260.394550Z21640.359482Z7500.3311114
Z15090.443619Z25890.393651LF5760.359383LF15130.3306115
LF18320.443320LF4030.393552Z23470.359284Z22220.3301116
Z25100.439421Z23830.392853Z16960.358085Z17450.3298117
LF2920.438022Z14980.392654Z26140.354486Z15850.3267118
Z8040.435723Z17380.390155Z15040.353687Z15140.3257119
LF2800.432224Z22300.387956Z18610.353688Z23520.3256120
Z23890.431125Z23960.387857Z16120.350489Z12670.3246121
Z19660.430926Z15250.386858Z17120.349990Z17140.3238122
Z17590.429427Z6100.385659LF810.349891Z18560.3234123
LF3620.429428Z15070.383660AC880.346292LF1850.3186124
Z17340.426829LF13210.383061AC1170.346093Z18200.3175125
Z8880.426030Z15130.382662AC1510.345694Z23880.3168126
Z15030.423331Z22580.382163Z17020.344895Z11660.3167127
Z6180.418632Z20380.379864Z5890.344096Z22590.3153128
Z6070.3146129R1620.3011144LF15230.2770159LF12890.2268174
Z15100.3124130Z15200.2996145LF3400.2752160LF4000.2248175
LF17510.3119131Z16940.2988146Z23740.2742161LF3080.2203176
Z16200.3110132LF3050.2982147LF3180.2734162Z10980.2192177
LF34330.3100133Z6220.2969148LF4120.2639163Z18190.2170178
Z20260.3086134Z15230.2949149Z21620.2610164Z15690.2088179
Z18020.3083135LF3980.2924150Z18590.2545165Z29960.1977180
Z17010.3078136LF1100.2875151Z5900.2512166Z6410.1949181
LF3580.3062137LF4050.2864152Z16860.2498167Z15010.1904182
Z15400.3046138Z18550.2862153Z17030.2494168Z18420.1883183
AC650.3042139Z11670.2851154LF4020.2452169Z16900.1794184
AC1440.3038140Z17090.2851155Z17870.2407170LF15370.1700185
AC290.3031141LF590.2811156Z22800.2405171LF14560.1597186
Z16310.3026142Z15240.2777157Z22630.2380172Z15170.1088187
Z10520.3026143Z21380.2774158Z24310.2295173
), ArticleFig(id=1312006234002260508, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 5, caption=

Comparison of different strategies for primary core germplasm of tetraploid Agropyron

, figureFileSmall=null, figureFileBig=null, tableContent=

遗传距离

Genetic distance

聚类方法

Cluster method

多次聚类随机取样法

Multiple cluster random sampling method

多次聚类优先取样法

Multiple cluster preferred sampling method

多次聚类偏离度取样法

Multiple cluster deviation sampling method

MDVDCRVRMDVDCRVRMDVDCRVR

欧氏距离

Euclidean distance

最短距离法0.7864.8493.45127.760.7874.2294.79136.130.7872.6695.20130.48
最长距离法023.4480.07110.180.7867.1994.79134.10041.4190.26124.36
中间距离法033.5985.90115.420.7861.7294.79134.231.5643.7590.92124.13

欧氏距离

Euclidean distance

重心法029.6985.86112.821.5666.4194.79134.42053.9193.78125.04
类平均法032.0383.64114.461.5664.8494.79133.36038.2889.63125.75
可变类平均法0.7823.4477.23108.030.7868.7594.79133.79038.2888.89123.46
可变法018.7579.82108.770.7867.9794.79134.07043.7590.52125.39
离差平方和法017.9776.88106.330.7867.9794.79133.92047.6691.97125.55

马氏距离

Mahalanobis distance

最短距离法4.6949.2289.26118.920.7872.6694.79135.07074.2294.68131.39
最长距离法0.7828.1381.24112.130.7863.2894.79133.11057.0389.48128.29
中间距离法1.5639.0687.73115.400.7861.7294.79133.370.7859.3892.12125.80
重心法10.1639.0686.65113.801.5668.7594.79134.241.5660.9493.36126.75
类平均法0.7842.9788.91119.980.7867.9794.79134.09064.0693.05128.25
可变类平均法026.5680.28108.740.7867.1994.79134.11050.0087.76128.44
可变法016.4175.95104.911.5659.3894.79132.04040.6382.38122.75
离差平方和法028.9182.59111.091.5664.8494.79133.47060.1690.37129.29
), ArticleFig(id=1312006234111312413, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表5, caption=

四倍体冰草属初始核心种质不同取样策略差异比较

, figureFileSmall=null, figureFileBig=null, tableContent=

遗传距离

Genetic distance

聚类方法

Cluster method

多次聚类随机取样法

Multiple cluster random sampling method

多次聚类优先取样法

Multiple cluster preferred sampling method

多次聚类偏离度取样法

Multiple cluster deviation sampling method

MDVDCRVRMDVDCRVRMDVDCRVR

欧氏距离

Euclidean distance

最短距离法0.7864.8493.45127.760.7874.2294.79136.130.7872.6695.20130.48
最长距离法023.4480.07110.180.7867.1994.79134.10041.4190.26124.36
中间距离法033.5985.90115.420.7861.7294.79134.231.5643.7590.92124.13

欧氏距离

Euclidean distance

重心法029.6985.86112.821.5666.4194.79134.42053.9193.78125.04
类平均法032.0383.64114.461.5664.8494.79133.36038.2889.63125.75
可变类平均法0.7823.4477.23108.030.7868.7594.79133.79038.2888.89123.46
可变法018.7579.82108.770.7867.9794.79134.07043.7590.52125.39
离差平方和法017.9776.88106.330.7867.9794.79133.92047.6691.97125.55

马氏距离

Mahalanobis distance

最短距离法4.6949.2289.26118.920.7872.6694.79135.07074.2294.68131.39
最长距离法0.7828.1381.24112.130.7863.2894.79133.11057.0389.48128.29
中间距离法1.5639.0687.73115.400.7861.7294.79133.370.7859.3892.12125.80
重心法10.1639.0686.65113.801.5668.7594.79134.241.5660.9493.36126.75
类平均法0.7842.9788.91119.980.7867.9794.79134.09064.0693.05128.25
可变类平均法026.5680.28108.740.7867.1994.79134.11050.0087.76128.44
可变法016.4175.95104.911.5659.3894.79132.04040.6382.38122.75
离差平方和法028.9182.59111.091.5664.8494.79133.47060.1690.37129.29
), ArticleFig(id=1312006234191004190, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 6, caption=

The difference of different clustering methods under “Euclidean distance + Multiple cluster preferred sampling + Single Distance Method” strategy

, figureFileSmall=null, figureFileBig=null, tableContent=

取样比例

Sampling proportion

均值差异百分率

MD

方差差异百分率

VD

极差符合率

CR

变异系数变化率

VR

5056.2569.35144.27
10068.7588.96142.77
156.2581.25100147.25
20081.25100141.94
25081.25100134.34
30081.25100129.70
35075.00100125.80
40068.75100122.97
), ArticleFig(id=1312006234291667487, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表6, caption=

“欧氏距离+多次聚类优先取样法+最短距离法”策略组合下不同取样比例间差异

, figureFileSmall=null, figureFileBig=null, tableContent=

取样比例

Sampling proportion

均值差异百分率

MD

方差差异百分率

VD

极差符合率

CR

变异系数变化率

VR

5056.2569.35144.27
10068.7588.96142.77
156.2581.25100147.25
20081.25100141.94
25081.25100134.34
30081.25100129.70
35075.00100125.80
40068.75100122.97
), ArticleFig(id=1312006234371359264, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 7, caption=

List of 28 core germplasm resources of tetraploid Agropyron

, figureFileSmall=null, figureFileBig=null, tableContent=

序号

Serial number

库存编号

Inventory number

来源地

Source

引入时间

Import time

序号

Serial number

库存编号

Inventory number

来源地

Source

引入时间

Import time

1Z559中国新疆198715LF330中国北京2016
2Z1787中国新疆199816LF399中国内蒙古1995
3Z2510中国青海200317LF412中国新疆2002
4Z585中国内蒙古198618Z2431中国北京2016
5Z1511伊朗199319R132中国新疆1983
6Z2258中国新疆200220Z1802中国新疆1998
7Z1527俄罗斯199321LF1349中国青海2024
8LF112中国北京201622LF1498中国北京2016
9Z1780中国新疆199823LF1513中国青海2003
10Z1509伊朗199324LF1523中国新疆1998
11Z1512伊朗199325Z1812中国内蒙古1999
12Z1842中国内蒙古199926Z1856中国内蒙古1999
13Z1712中国内蒙古199527LF377中国新疆1993
14Z1969中国青海200128LF1782中国青海2003
), ArticleFig(id=1312006234438468129, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表7, caption=

28份四倍体冰草属核心种质清单

, figureFileSmall=null, figureFileBig=null, tableContent=

序号

Serial number

库存编号

Inventory number

来源地

Source

引入时间

Import time

序号

Serial number

库存编号

Inventory number

来源地

Source

引入时间

Import time

1Z559中国新疆198715LF330中国北京2016
2Z1787中国新疆199816LF399中国内蒙古1995
3Z2510中国青海200317LF412中国新疆2002
4Z585中国内蒙古198618Z2431中国北京2016
5Z1511伊朗199319R132中国新疆1983
6Z2258中国新疆200220Z1802中国新疆1998
7Z1527俄罗斯199321LF1349中国青海2024
8LF112中国北京201622LF1498中国北京2016
9Z1780中国新疆199823LF1513中国青海2003
10Z1509伊朗199324LF1523中国新疆1998
11Z1512伊朗199325Z1812中国内蒙古1999
12Z1842中国内蒙古199926Z1856中国内蒙古1999
13Z1712中国内蒙古199527LF377中国新疆1993
14Z1969中国青海200128LF1782中国青海2003
), ArticleFig(id=1312006234513965602, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 8, caption=

Comparison of differences in statistical measures between original germplasm and core germplasm

, figureFileSmall=null, figureFileBig=null, tableContent=

性状

Traits

种质

Germplasm

均值 Mean方差Variance

极差

Range

变异系数(%)

CV

数据

Data

P-value

显著性

Significance

数据

Data

P-value

显著性

Significance

株高(cm)PH原始种质68.210.28NS232.410.00026S**81.6022.35
核心种质63.12567.0181.6037.73
茎粗(cm)SD原始种质0.230.87NS0.00100.00096S**0.2415.80
核心种质0.230.00300.2423.49
旗叶长(cm)FLL原始种质12.010.95NS13.440.00002S**31.5030.53
核心种质11.9337.9531.5051.62
旗叶宽(cm)FLW原始种质0.550.95NS0.030.00012S**1.2230.77
核心种质0.540.071.2249.53
旗叶鞘长(cm)FLSL原始种质11.970.98NS3.820.01344S*12.7116.33
核心种质11.996.8512.7121.83
倒二叶长(cm)SLL原始种质16.271.00NS23.420.00001S**45.0829.74
核心种质16.2768.9045.0851.02
倒二叶宽(cm)SLW原始种质0.620.54NS0.030.00000S**1.5028.28
核心种质0.650.101.5047.72
倒二叶鞘长(cm)SLSL原始种质9.200.58NS2.440.00167S**12.0716.98
核心种质9.455.2212.0724.19
茎秆节数 NSN原始种质3.121.00NS0.450.02668S*3.0021.41
核心种质3.120.743.0027.63
基部茎长(cm)BSL原始种质2.390.60NS0.840.00865S**6.5638.26
核心种质2.521.566.5649.59
穗长(cm)PL原始种质8.730.06NS7.880.01846S*16.5832.14
核心种质10.1313.6616.5836.48
穗下茎长(cm)SLS原始种质28.990.07NS62.520.09863NS40.8127.28
核心种质25.9487.9340.8136.14
小穗数 SN原始种质36.290.89NS44.810.01146S*34.8018.45
核心种质36.5481.5234.8024.71
小穗粒数 KPS原始种质9.790.27NS2.460.11371NS8.4016.02
核心种质9.433.388.4019.52
小穗长(cm)SL原始种质1.360.60NS0.060.00132S**1.5017.41
核心种质1.330.121.5026.45
小穗宽(cm)SW原始种质0.570.83NS0.030.00000S**1.5329.18
核心种质0.580.091.5351.62
), ArticleFig(id=1312006234597851683, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表8, caption=

原始种质与核心种质样本统计量的差异比较

, figureFileSmall=null, figureFileBig=null, tableContent=

性状

Traits

种质

Germplasm

均值 Mean方差Variance

极差

Range

变异系数(%)

CV

数据

Data

P-value

显著性

Significance

数据

Data

P-value

显著性

Significance

株高(cm)PH原始种质68.210.28NS232.410.00026S**81.6022.35
核心种质63.12567.0181.6037.73
茎粗(cm)SD原始种质0.230.87NS0.00100.00096S**0.2415.80
核心种质0.230.00300.2423.49
旗叶长(cm)FLL原始种质12.010.95NS13.440.00002S**31.5030.53
核心种质11.9337.9531.5051.62
旗叶宽(cm)FLW原始种质0.550.95NS0.030.00012S**1.2230.77
核心种质0.540.071.2249.53
旗叶鞘长(cm)FLSL原始种质11.970.98NS3.820.01344S*12.7116.33
核心种质11.996.8512.7121.83
倒二叶长(cm)SLL原始种质16.271.00NS23.420.00001S**45.0829.74
核心种质16.2768.9045.0851.02
倒二叶宽(cm)SLW原始种质0.620.54NS0.030.00000S**1.5028.28
核心种质0.650.101.5047.72
倒二叶鞘长(cm)SLSL原始种质9.200.58NS2.440.00167S**12.0716.98
核心种质9.455.2212.0724.19
茎秆节数 NSN原始种质3.121.00NS0.450.02668S*3.0021.41
核心种质3.120.743.0027.63
基部茎长(cm)BSL原始种质2.390.60NS0.840.00865S**6.5638.26
核心种质2.521.566.5649.59
穗长(cm)PL原始种质8.730.06NS7.880.01846S*16.5832.14
核心种质10.1313.6616.5836.48
穗下茎长(cm)SLS原始种质28.990.07NS62.520.09863NS40.8127.28
核心种质25.9487.9340.8136.14
小穗数 SN原始种质36.290.89NS44.810.01146S*34.8018.45
核心种质36.5481.5234.8024.71
小穗粒数 KPS原始种质9.790.27NS2.460.11371NS8.4016.02
核心种质9.433.388.4019.52
小穗长(cm)SL原始种质1.360.60NS0.060.00132S**1.5017.41
核心种质1.330.121.5026.45
小穗宽(cm)SW原始种质0.570.83NS0.030.00000S**1.5329.18
核心种质0.580.091.5351.62
), ArticleFig(id=1312006234664960548, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 9, caption=

Comparison of principal component analysis between original germplasm and core germplasm

, figureFileSmall=null, figureFileBig=null, tableContent=

主成分

Principal component

原始种质Original germplasm核心种质Core germplasm
特征值Eigenvalue贡献率(%)Contribution rate累积贡献率(%)Cumulative contribution rate特征值Eigenvalue贡献率(%)Contribution rate累积贡献率(%)Cumulative contribution rate
14.45227.82227.8224.71129.44429.444
22.53615.84943.6722.84217.76047.204
31.77911.11954.7912.14113.38360.587
41.5079.41664.2071.1957.46868.055
51.0086.29870.5051.0226.38874.443
60.7924.94775.4520.8285.17679.618
), ArticleFig(id=1312006234736263717, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表9, caption=

原始种质与核心种质主成分分析比较

, figureFileSmall=null, figureFileBig=null, tableContent=

主成分

Principal component

原始种质Original germplasm核心种质Core germplasm
特征值Eigenvalue贡献率(%)Contribution rate累积贡献率(%)Cumulative contribution rate特征值Eigenvalue贡献率(%)Contribution rate累积贡献率(%)Cumulative contribution rate
14.45227.82227.8224.71129.44429.444
22.53615.84943.6722.84217.76047.204
31.77911.11954.7912.14113.38360.587
41.5079.41664.2071.1957.46868.055
51.0086.29870.5051.0226.38874.443
60.7924.94775.4520.8285.17679.618
), ArticleFig(id=1312006234815955494, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=EN, label=Table 10, caption=

Comparison of genetic diversity indices between original germplasm and core germplasm

, figureFileSmall=null, figureFileBig=null, tableContent=

性状

Traits

原始种质

Original germplasm

核心种质

Core germplasm

t值

t value

显著性

Significance

株高PH1.971.960.09NS
茎粗SD1.851.820.22NS
旗叶长FLL1.931.910.17NS
旗叶宽FLW1.811.780.24NS
旗叶鞘长FLSL1.701.650.38NS
倒二叶长SLL1.991.980.08NS
倒二叶宽SLW1.881.850.25NS
倒二叶鞘长SLSL1.751.710.34NS
茎秆节数NSN1.581.520.51NS
基部茎长BSL1.731.680.36NS
穗长PL1.951.930.16NS
穗下茎长SLS1.921.890.23NS
小穗数SN1.901.870.26NS
小穗粒数KPS1.691.630.43NS
小穗长SL1.801.750.39NS
小穗宽SW1.831.800.27NS
), ArticleFig(id=1312006234883064359, tenantId=1146029695717560320, journalId=1311385948879159419, articleId=1312006222337900988, language=CN, label=表10, caption=

原始种质与核心种质遗传多样性指数分析比较

, figureFileSmall=null, figureFileBig=null, tableContent=

性状

Traits

原始种质

Original germplasm

核心种质

Core germplasm

t值

t value

显著性

Significance

株高PH1.971.960.09NS
茎粗SD1.851.820.22NS
旗叶长FLL1.931.910.17NS
旗叶宽FLW1.811.780.24NS
旗叶鞘长FLSL1.701.650.38NS
倒二叶长SLL1.991.980.08NS
倒二叶宽SLW1.881.850.25NS
倒二叶鞘长SLSL1.751.710.34NS
茎秆节数NSN1.581.520.51NS
基部茎长BSL1.731.680.36NS
穗长PL1.951.930.16NS
穗下茎长SLS1.921.890.23NS
小穗数SN1.901.870.26NS
小穗粒数KPS1.691.630.43NS
小穗长SL1.801.750.39NS
小穗宽SW1.831.800.27NS
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四倍体冰草属种质资源的表型综合评价与核心种质构建
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任桂宽 1 , 韩冰 1 , 刘婧雅 1 , 李贺 1 , 杨欣明 1 , 韩海明 1 , 张锦鹏 1 , 张润琪 1 , 周升辉 1 , 李立会 1, 2
植物遗传资源学报 | 论文 2026,27(7): 1399-1414
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植物遗传资源学报 |论文 2026 , 27 (7) : 1399 -1414
四倍体冰草属种质资源的表型综合评价与核心种质构建
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任桂宽1 , 韩冰1, 刘婧雅1, 李贺1, 杨欣明1, 韩海明1, 张锦鹏1, 张润琪1, 周升辉1 , 李立会1, 2
作者信息
  • 1中国农业科学院作物科学研究所/作物基因资源与育种全国重点实验室,北京 100081
  • 2崖州湾国家实验室,海南 三亚 572024
通讯作者:
李立会,研究方向为小麦种质资源,E-mail:
周升辉,研究方向为小麦种质资源,E-mail:
作者简介:

研究方向为小麦种质资源,E-mail:

Comprehensive Phenotypic Evaluation and Core Collection Construction of Tetraploid Agropyron Germplasm Resources
Guikuan REN1 , Bing HAN1, Jingya LIU1, He LI1, Xinming YANG1, Haiming HAN1, Jinpeng ZHANG1, Runqi ZHANG1, Shenghui ZHOU1 , Lihui LI1, 2
Affiliations
  • 1Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/State Key Laboratory of Crop Gene Resources and Breeding, Beijing 100081
  • 2Yazhouwan National Laboratory, Sanya 572024, Hainan
出版时间: 2026-07-16 doi: 10.13430/j.cnki.jpgr.20260623002
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冰草属物种不仅在全球范围内被视为重要的优良牧草,更是通过远缘杂交手段拓宽小麦基因源基础、改良综合性状的关键外源供体。为促进冰草属种质资源的高效利用,以206份不同来源的冰草属种质资源(不包含沙芦草)作为研究对象,首先利用流式细胞术(Flow cytometry)结合细胞学进行倍性鉴定;随后基于16个表型性状,通过多样性分析、相关性分析、聚类分析和隶属函数分析,对四倍体冰草属种质资源进行综合分析评价;最后从由2种遗传距离、3种取样方法、8个取样比例及8种聚类方法组合的384种不同策略中,筛选构建四倍体冰草属核心种质的最佳方案,并验证其代表性。结果表明,供试冰草属种质资源包括四倍体187份、二倍体8份、六倍体11份。四倍体冰草属种质的16个表型性状变异系数介于15.78%~38.26%,平均为24.42%;遗传多样性指数介于1.58~1.99,平均为1.83,表明四倍体冰草属种质资源具有较高的表型多样性。通过系统比较,确定“欧氏距离+多次聚类优先取样法+15%取样比例+最短距离法”作为构建四倍体冰草属核心种质的最佳策略,并由此构建了包含28份资源的核心种质。多维度的验证结果表明,核心种质能够有效代表原始种质的遗传特征和群体结构。通过隶属函数综合评价筛选出综合得分较高的5份优异种质:Z559、Z1511、LF112、Z1780、LF1782,均包含在核心种质群体内,进一步证明了核心种质的优异性。本研究构建的四倍体冰草属核心种质能较为完整地代表原始种质群体,为冰草属种质资源的保存、评价及遗传改良提供了理论依据和材料基础。

冰草属  /  小麦野生种  /  倍性鉴定  /  表型评价  /  多样性分析  /  核心种质构建

Species of the genus Agropyron Gaertn. are not only recognized as premium perennial forages worldwide but also serve as critical exogenous donors for broadening the genetic base and improving the comprehensive traits of wheat through wide hybridization. To promote the efficient utilization of Agropyron germplasm resources, this study investigated 206 accessions of diverse origins (excluding A. mongolicum). Ploidy levels were first identified using flow cytometry in combination with cytological observations. Subsequently, a comprehensive evaluation of tetraploid Agropyron germplasm was performed based on 16 phenotypic traits through diversity, correlation, cluster, and membership function analyses. Finally, the optimal strategy for constructing a tetraploid Agropyron core collection was screened from 384 combinations involving two genetic distances, three sampling methods, eight sampling proportions, and eight clustering methods, followed by a representativeness validation. The results indicated that the tested germplasm consisted of 187 tetraploids, 8 diploids, and 11 hexaploids. The coefficient of variation for the 16 phenotypic traits in the tetraploid accessions ranged from 15.78% to 38.26%, with an average of 24.42%. The genetic diversity index ranged from 1.58 to 1.99, with an average of 1.83, indicating high phenotypic diversity. Through systematic comparison, the strategy of “Euclidean distance + multiple cluster priority sampling +15% sampling proportion+single distance method” was identified as the optimal strategy, leading to the construction of a core collection containing 28 accessions. Multi-dimensional validation confirmed that the core collection effectively represents the genetic characteristics and population structure of the initial collection. Five elite germplasm accessions with high comprehensive scores, namely Z559, Z1511, LF112, Z1780 and LF1782, were screened out via subordinate function comprehensive evaluation. All of them were included in the core germplasm collection, which further verified the superiority of the core germplasm. In summary, the tetraploid Agropyron core collection developed in this study provides a reliable representation of the original population, offering a theoretical basis and material foundation for the preservation, evaluation, and genetic improvement of Agropyron germplasm.

Agropyron Gaertn.  /  wheat wild relatives  /  ploidy identification  /  phenotypic evaluation  /  diversity analysis  /  core collection construction
任桂宽, 韩冰, 刘婧雅, 李贺, 杨欣明, 韩海明, 张锦鹏, 张润琪, 周升辉, 李立会. 四倍体冰草属种质资源的表型综合评价与核心种质构建. 植物遗传资源学报, 2026 , 27 (7) : 1399 -1414 . DOI: 10.13430/j.cnki.jpgr.20260623002
Guikuan REN, Bing HAN, Jingya LIU, He LI, Xinming YANG, Haiming HAN, Jinpeng ZHANG, Runqi ZHANG, Shenghui ZHOU, Lihui LI. Comprehensive Phenotypic Evaluation and Core Collection Construction of Tetraploid Agropyron Germplasm Resources[J]. Journal of Plant Genetic Resources, 2026 , 27 (7) : 1399 -1414 . DOI: 10.13430/j.cnki.jpgr.20260623002
冰草属(Agropyron Gaertn.)是禾本科(Poaceae)小麦族(Triticeae)中的多年生异花授粉植物,其染色体组仅为独特的P基因组,在我国北方干旱地区的沙质生境中分布广泛且种质资源极具多样性[1]。按照耿以礼提出的狭义冰草属的概念,该属包含冰草(A. cristatum)、沙生冰草(A. desertorum)、根茎冰草(A. michnoi)、西伯利亚冰草(A. sibiricum)和沙芦草(A. mongolicum)5个种及其下的变种与变型。自然界中,冰草属植物主要以二倍体(2n=2x=14,PP)、四倍体(2n=4x=28,PPPP)及六倍体(2n=6x=42,PPPPPP)3种倍性形式存在,其中沙芦草自然群体基本为二倍体[2]。形态上,冰草属植物穗状花序具有从卵圆型到长卵圆型再到线型近至圆柱型的一系列变异,其中沙芦草因具有窄线性的穗型特征而显著区别于其他冰草属植物[3]。
冰草属植物不仅具备极高的饲用与生态价值,更是拓宽栽培小麦(Triticum aestivum L.)遗传基础的重要异源基因供体。当前,我国栽培小麦正面临增产潜力受限、抗病性丧失及气候适应性下降等多重问题,日益狭窄的遗传背景已成为制约小麦改良的关键因素。利用野生近缘种蕴含的丰富遗传变异,是解决这一问题的核心途径。冰草属作为小麦的近缘属,具备广谱抗病性、强抗逆性(抗寒、旱、盐)及优异的穗部性状(多花、多小穗、多分蘖),被公认为小麦遗传改良的战略性资源[4-6]。自20世纪80年代起,以李立会研究员为代表的团队在小麦-冰草远缘杂交领域取得突破,利用四倍体冰草Z559成功创制附加系,并培育出“普冰”系列高产小麦品种,充分验证了四倍体冰草在遗传改良中不可替代的潜能[7]。因此,系统开展四倍体冰草属种质资源的鉴定与评价,是挖掘优异基因、实现高效远缘杂交育种的关键前提。
随着资源保存规模的不断扩大,高效管理与精准挖掘成为核心诉求。1984年,Frankel[8]提出“核心种质”(Core collection)概念,旨在通过科学取样,以最小的规模代表原始群体的遗传多样性,从而显著提升评价与利用效率。目前,核心种质的构建已在小麦[9]、水稻[10]、玉米[11]、大麦[12]和谷子[13]等作物中得到广泛应用。例如,郝晨阳等[9]构建的小麦微核心种质(占整体1%,遗传代表性达70%)深刻揭示了我国小麦的遗传分化规律。针对冰草属,已有研究利用不同维度策略初步构建了沙芦草等物种的初级核心种质[14]。然而,物种的倍性水平对表型性状具有显著影响,是种质资源评价中不容忽视的生物学因素。前人关于冰草属种质资源的遗传多样性分析及综合评价研究,往往忽略了倍性水平差异,这在很大程度上降低了核心种质构建的科学性与应用价值。
本研究依托国家多年生小麦野生近缘植物种质资源圃(廊坊),以206份穗型特征构成连续变异的冰草属种质资源为研究对象,通过流式细胞术与细胞学核型鉴定明确倍性水平,结合隶属函数分析及多维度策略组合,系统开展四倍体冰草属的表型综合评价并构建核心种质,研究结果旨在为冰草属优异基因的高效挖掘及远缘杂交育种应用提供理论依据与物质基础。
供试材料为国家多年生小麦野生近缘植物种质资源圃(廊坊)中保存的不同来源地的206份冰草属种质资源(不含二倍体沙芦草)(表1),其中来自中国新疆维吾尔自治区、内蒙古自治区、青海省等地区的材料170份,来自俄罗斯、伊朗等国家的材料36份。
供试材料参照《作物种质资源繁殖更新技术规程》[15]于中国农业科学院作物科学研究所国家多年生小麦野生近缘植物种质资源圃(廊坊)内进行扩繁与保存。每份材料种植1行,长7 m、株间距0.3 m,不同材料间行距1 m。
将国家多年生小麦野生近缘植物种质资源圃(廊坊)内已知倍性的二倍体(2x)、四倍体(4x)和六倍体(6x)冰草属材料作为内参,使用流式细胞术(FCM,flow cytometry)快速鉴定供试材料的倍性[16],并结合细胞学方法[17]辅助验证。
参照《冰草种质资源描述规范和数据标准》[18],于2025年测定四倍体冰草属资源的株高、茎粗、旗叶长、旗叶宽、旗叶鞘长、倒二叶长、倒二叶宽、倒二叶鞘长、茎秆节数、基部茎长、穗长、穗下茎长、小穗数、小穗粒数、小穗长和小穗宽共16个表型性状,每个小区随机选取10株代表性单株进行测量,并取平均值。
利用Excel进行表型性状均值、方差、极差和变异系数计算,采用Origin Pro软件进行相关性分析、系统聚类分析并绘图[19],并利用Excel进行隶属函数分析[20]计算等方法对四倍体冰草属资源进行综合评价,筛选出综合得分较高的种质资源材料以供遗传改良利用。
隶属函数评价过程中,首先依据公式(1)计算各性状隶属函数值;随后依据公式(2)结合主成分分析结果计算各性状权重;最后通过公式(3)利用16个性状的隶属函数值(μ)与性状权重计算每份样品表型性状的综合评分。相关计算公式[21]如下。
μ(Xi)=(Xi-Ximin)/(Ximax-Ximin)
Wi=Pi/∑Pi
D=∑[μ(Xi)×Wi]
其中,μ(Xi)表示样品第i个性状的隶属函数值,Xi为每份资源第i个性状的实测值,Ximin和Ximax分别表示所有资源第i个性状的最小值和最大值,Wi为样品第i个性状的权重,Pi是经过主成分分析计算得到的第i个性状的贡献率,D值为每份资源16个性状的综合得分,其中,i表示参与评分的第i个性状。
利用QGA Station 2.0软件,基于四维策略构建核心种质筛选体系,其中遗传距离维度选取欧氏距离与马氏距离,取样策略维度选取多次聚类随机取样、多次聚类优先取样、多次聚类偏离度取样3种模式,取样梯度维度设置5%~40%(间隔5%)共8个比例,聚类方法维度采用最短距离法、最长距离法、中间距离法、重心法、类平均法、可变类平均法、可变法及离差平方和法8种方法。通过上述维度的策略组合,构建了384组初选核心种质候选群体。
采用均值差异百分率、方差差异百分率、极差符合率及变异系数变化率4项核心指标进行综合评价。筛选标准依据双重原则[22],原则一:仅保留均值差异百分率20%且极差符合率80%的子集,认定其具备有效代表原始种质群体的能力,从而进行有效性判定;原则二:在符合原则一的子集中,遵循均值差异百分率值越小、方差差异百分率、极差符合率、变异系数变化率值越大则代表性越强的逻辑,从而完成最优性判定,最终筛选确定核心种质构建的最佳策略组合。
通过比较四倍体冰草属核心种质与原始种质16个表型性状的均值、方差、极差和变异系数,利用Excel计算不同群体各表型性状的Shannon-Wiener′s多样性指数并进行t值检验[23],同时利用Origin Pro软件进行主成分分析并绘制3D分布散点图,直观评价核心种质的代表性。
以已知倍性的二倍体、四倍体和六倍体冰草为参照,对206份供试材料分别进行流式细胞术鉴定与细胞学验证。典型材料的根尖染色体数目及流式检测荧光强度峰值如图1所示,二倍体冰草根尖染色体数目为14条,流式检测相对荧光强度峰值约为10;四倍体冰草染色体数目为28条,流式检测相对荧光强度峰值约为75;六倍体冰草染色体数目为42条,流式检测相对荧光强度峰值约为105。综合流式细胞术和细胞学的鉴定结果,在206份供试材料中共鉴定出二倍体冰草属资源8份,四倍体冰草属资源187份,六倍体冰草属资源11份,其中四倍体占比为90.78%。
基于上述倍性鉴定结果,以187份四倍体冰草属种质为研究对象,对其16个表型性状进行分析(表2),结果表明,16个表型性状的变异系数均大于15%,变化范围为15.78%~38.26%,平均为24.42%,表明187份四倍体冰草属种质间存在较大的表型差异。其中,基部茎长的变异系数最高,变幅为0.80~7.36 cm,均值为2.39 cm,说明该性状的变异程度最大;小穗粒数的变异系数最低,变幅为6.00~14.40个,均值为9.78个。从遗传多样性指数看,16个表型性状的遗传多样性指数在1.58~1.99之间,平均值为1.83,整体表现出较高的遗传多样性水平。其中,倒二叶长的遗传多样性指数最高,表明该性状的遗传多样性最为丰富;茎秆节数的遗传多样性指数最低,表明该性状的分布相对集中。综合变异系数与遗传多样性指数的分析结果,187份四倍体冰草属种质表现出较为丰富的表型遗传多样性,为优异种质的筛选提供了重要基础。
为探究四倍体冰草属种质不同表型性状之间的内在联系,对16个表型性状进行了相关性分析。结果表明,16个性状间存在不同程度的关联(图2)。从相关性强弱来看,极显著正相关(P≤0.01)主要集中于以下三类:一是茎粗与旗叶长、旗叶宽、旗叶鞘长及倒二叶长、倒二叶宽、倒二叶鞘长叶部性状之间;二是茎粗与穗长、小穗数、小穗粒数、小穗长、小穗宽穗部性状之间;三是叶部性状(旗叶长、旗叶宽、旗叶鞘长及倒二叶长、倒二叶宽、倒二叶鞘长)内部。显著正相关(P≤0.05)则主要存在于茎秆节数与倒二叶长、倒二叶宽之间以及小穗宽与倒二叶长、倒二叶宽之间。16个性状间的负相关关系整体较弱,除茎秆节数与穗下茎长达到显著负相关外,其余负相关关系均未达到显著水平。
为分类利用不同性状特征类群的冰草属种质资源,基于16个表型性状对187份四倍体冰草属种质进行系统聚类分析。结果表明,供试材料可划分为三大类群(表3,图3)。第Ⅰ类群种质表现为矮秆紧凑型,株高(68.16 cm)处于三大类群最低水平,基部茎长(2.38 cm)、穗下茎长(28.93 cm)均为各类群最低值,整体植株节间长度偏短,株型紧凑,抗倒伏基础条件较好。第Ⅱ类群种质表现为高秆型,株高(70.22 cm)、基部茎长(2.48 cm)、穗长(8.84 cm)、穗下茎长(30.17 cm)、小穗粒数(9.95)在三大类群中为最高值,具备改良穗粒数的育种价值,但旗叶、倒二叶整体偏窄偏小,且偏高的株高会提升倒伏发生风险。第Ⅲ类群种质表现为粗秆大叶型,且穗部性状突出,茎粗(0.23 cm)、旗叶(12.04 cm)与倒二叶长(16.32 cm)、倒二叶宽(0.62 cm)在三大类群中均为最高值,光合叶面积较大,茎秆节数(3.12)最多,茎秆机械强度优异;小穗数(36.33)大于其余两类群,具备稳产抗逆潜质。
为筛选表型性状优异的种质资源,基于16个表型性状计算隶属函数值,并依据综合评价值(D值)对187份四倍体冰草属种质进行综合评价与排序(表4)。从D值的整体分布看,187份材料的D值在0.1088~0.6070之间,平均为0.3526,变异系数为18.79%,表明供试种质在综合表现上存在较大差异。其中,D值大于0.5的材料共3份,分别为LF1782(0.6070)、Z2609(0.5044)和Z1780(0.5018),表现出优异的综合农艺性状;D值低于0.3的材料共43份,占比22.99%,综合表现较差。排名前十的材料依次为LF1782、Z2609、Z1780、Z1511、Z559、LF132、Z1813、LF112、LF1804、Z1784,其D值均高于0.47,在营养生长与生殖发育方面均表现出明显优势,可作为冰草属种质资源优先利用的候选材料。
为构建四倍体冰草属核心种质,综合考虑2种遗传距离、3种取样方法、8种取样比例和8种聚类方法4个维度,共组合形成384个构建策略。以均值差异百分率、方差差异百分率、极差符合率和变异系数变化率为评价参数,按照方法部分所述的筛选原则[21]进行最佳策略的筛选。
为简化比较过程,首先计算2种遗传距离、3种取样方法和8种聚类方法3个维度各参数在8种取样比例下的平均值(表5),对比不同策略组合的优劣。结果显示,在取样方法方面,多次聚类随机取样法在部分聚类方法下不满足原则一,而多次聚类优先取样法和多次聚类偏离度取样法在所有聚类方法下均满足原则一。在均值差异百分率相近的情况下,多次聚类优先取样法的极差符合率、方差差异百分率和变异系数变化率整体高于多次聚类偏离度取样法,对核心种质的代表性更强、多样性更高,符合原则二。因此,选择多次聚类优先取样法作为最佳取样方法,这与梨[24]、燕麦[25]等研究结果一致。在确定取样方法的基础上,进一步比较2种遗传距离的参数表现,结果表明,在多次聚类优先取样法策略下,欧氏距离的均值差异百分率整体小于马氏距离,且极差符合率、方差差异百分率和变异系数变化率整体大于马氏距离,符合原则二。因此,选择欧氏距离作为最佳遗传距离。在确定取样方法与遗传距离的基础上,进一步比较8种聚类方法的参数表现,结果表明,最短距离法、最长距离法、中间距离法、可变类平均法、可变法和离差平方和法的均值差异百分率最小;所有聚类方法的极差符合率一致;最短距离法的方差差异百分率和变异系数变化率均最大。因此,选择最短距离法作为最佳聚类方法。
基于上述确定的“欧氏距离+多次聚类优先取样法+最短距离法”组合,进一步比较8种取样比例的参数差异(表6)。结果表明,除15%取样比例外,其余比例的均值差异百分率均为0;当取样比例为15%、20%、25%和30%时,方差差异百分率最大,为81.25%;除5%和10%取样比例外,其余比例的极差符合率均为100%;变异系数变化率在15%取样比例下最大,为147.25%。依据原则二及各参数的有效性优先级(极差符合率变异系数变化率方差差异百分率均值差异百分率)[26],优先选取极差符合率和变异系数变化率较大的取样比例。综合考虑,选择15%作为构建核心种质的最佳取样比例。
综合上述筛选结果,确定“欧氏距离+多次聚类优先取样法+15%取样比例+最短距离法”为构建四倍体冰草属核心种质的最佳策略组合。依据该策略,从187份四倍体冰草属种质中构建出包含28份材料的核心种质群体(表7)。
为验证所构建核心种质的有效性与代表性,对四倍体冰草属核心种质群体与原始种质群体的表型性状进行多维度比较分析。首先,对两个群体16个表型性状数据的均值进行差异检验(表8),结果显示所有性状的均值差异均不显著,表明核心种质群体在表型水平上与原始种质群体保持一致,能够有效代表原始种质。在变异程度方面,除穗下茎长和小穗粒数外,其余14个表型性状在核心种质群体中的方差与变异系数均显著或极显著高于原始种质群体,说明核心种质群体在完整保留了原始群体的遗传多样性的基础上,进一步提升表型性状的离散程度,具备更高的育种潜力与种质资源利用价值。此外,核心种质群体所有性状的极差均与原始种质群体完全一致,表明核心种质完整保留了原始种质的表型极值,未丢失极端表型资源。
对核心种质群体与原始种质群体的表型数据进行主成分分析(表9),并依据前3个主成分的贡献值绘制三维分布散点图(图4)。原始种质与核心种质前6个主成分的特征值和贡献率均较为接近。其中,原始种质与核心种质前6个主成分的累计贡献率分别为75.452%和79.618%,表明核心种质在压缩样本量的同时,保留了原始种质绝大部分的表型变异信息。除主成分4的特征值和贡献率略有下降外,核心种质其余5个主成分的特征值和贡献率均较原始种质有所提升。从散点图分布可直观看出,原始种质群体散点分布密集,整体具有较高的相似性与冗余度,而核心种质群体的散点分布更加分散,有效剔除了原始种质中的冗余部分,同时较好地保留了原始种质群体的整体结构,直观体现了其对原始种质群体的代表性。
进一步计算两个群体的遗传多样性指数(H′)并进行t检验(表10)。结果表明,核心种质群体的遗传多样性指数与原始种质群体近似,且t检验显示两个群体间无显著差异,证明了所构建的四倍体冰草核心种质有效保留了原始种质的遗传多样性,符合核心种质“以最小样本量最大化保留遗传多样性”的构建目标。
倍性鉴定是种质资源研究与利用的基础。流式细胞术因其快速、准确、通量高的特点,已广泛应用于马铃薯[27]、黑麦[28]等作物的倍性鉴定。本研究采用流式细胞术结合根尖染色体制片验证,对206份冰草属种质资源进行倍性鉴定,两种方法结果一致,证实了流式细胞术在冰草倍性鉴定中的可靠性。该方法可实现对冰草倍性的大规模、快速筛查,为冰草种质资源的系统评价提供了技术支撑[29]。此外,流式细胞术还可用于初步检测样本的基因组大小[30],为后续冰草种质的基因组学研究奠定基础。
在206份供试材料中,四倍体冰草属材料占比高达90.78%,二倍体与六倍体占比相对较低。这一倍性分布格局可能与冰草属的进化特征及材料来源密切相关。冰草属以四倍体为主,其在进化过程中表现出较强的适应性与竞争优势,四倍体冰草也是目前成功应用于小麦遗传改良中的倍性类型[31-34]。此外,核心种质的构建需在同一倍性水平内进行,以保证遗传背景的一致性与可比性。因此,本研究选取四倍体冰草属种质资源作为主要研究对象,对其表型性状进行系统评价。
本研究中四倍体冰草属资源表型性状表现出较高的变异系数和遗传多样性指数,印证了冰草属种质资源具有较高的遗传多样性特征[35]。其中,基部茎长变异系数最大,可能与冰草属对生境差异的适应性响应有关;小穗粒数变异系数最小,反映出该性状在冰草属中相对稳定,在对小麦遗传改良的过程中可作为产量构成中的稳产性状。倒二叶长、株高、穗长、小穗数等性状遗传多样性指数较高,说明这些与营养生长和穗部发育相关的性状存在丰富的遗传变异,能够有效反映四倍体冰草属的表型多样性特征,可作为种质资源多样性评价的代表性指标。上述结果为四倍体冰草属种质资源的筛选与利用提供了重要参考。
相关性分析揭示了四倍体冰草属表型性状间内在关联规律。茎粗与穗部性状(穗长、小穗数、小穗粒数、小穗长、小穗宽)呈极显著正相关,同时叶部性状(旗叶长、旗叶宽、旗叶鞘长与倒二叶长、倒二叶宽、倒二叶鞘长)与穗部性状间的正相关关系充分表明冰草属营养生长器官在发育上具有高度协同性。穗部性状间,穗长与小穗粒数、小穗长呈极显著正相关,小穗数与小穗粒数呈显著正相关、与小穗宽呈极显著正相关,小穗粒数与小穗长、小穗宽呈极显著正相关,小穗长与小穗宽呈极显著正相关,都证实发育充分的大穗是形成高产潜力的结构基础。其中小穗粒数与小穗长、小穗宽的极显著正相关尤为突出,表明小穗形态发育对籽粒承载能力具有决定性作用。茎、叶部性状与穗部性状间的广泛正相关,从统计学上支持了旺盛的营养生长为生殖发育提供物质基础的生理逻辑。在种质资源鉴定方面,可以将茎粗、倒二叶宽、倒二叶鞘长等易于观测的表型性状作为核心鉴定指标,用于间接评价小穗粒数、小穗长等穗部性状表现,提升种质筛选效率,为冰草种质评价及小麦遗传改良中的亲本选配提供参考依据。
利用系统聚类方法将187份四倍体冰草属资源划分为均衡型、矮小型和高大型3个类群,各类群性状特征分明,为种质资源的分类利用提供了参考。隶属函数综合评价筛选出前8份材料中的5份:Z559、Z1511、LF112、Z1780和LF1782属于构建的核心种质范围,进一步验证了核心种质的代表性,也为冰草属遗传改良提供了直接的优异材料,其中优异资源Z559已在小麦-冰草远缘杂交及小麦遗传育种改良中深度应用[32],为后续进一步利用其他核心种质资源建立可行性基础。
本研究从遗传距离、取样方法、取样比例和聚类方法4个维度组合的384种策略中,筛选出“欧氏距离+多次聚类优先取样法+15%取样比例+最短距离法”为四倍体冰草核心种质构建的最佳策略。在取样比例方面,15%的取样比例低于吴昌忠等[36]在相关研究中的取样比例,更加符合核心种质“以最小样本量最大化保留遗传多样性”的构建原则,有利于提高种质资源的保存与利用效率。原始种质与核心种质两大群体的表型变异分析、主成分分析与遗传多样性指数显著性检验等多维度验证结果均表明,构建的核心种质在代表性、遗传多样性和极值保留方面均符合核心种质构建的预期目标,该构建策略可为其他禾本科作物核心种质的构建提供参考。
本研究仍存在一定局限性,核心种质的构建仅基于表型性状数据,尚未结合分子标记进行分析。表型性状易受环境因素影响,而分子标记能够直接反映基因组水平的变异,后续随着冰草参考基因组的发布,可结合高通量SNP等分子标记,从表型和分子水平综合评价冰草种质资源的遗传多样性,进一步完善核心种质的构建。同时,本研究筛选的优异种质资源尚未开展田间抗逆性和品质鉴定,后续可对核心种质和优异种质进行抗寒、抗旱、耐盐碱及营养品质等方面的鉴定,明确其实际应用价值。进一步对筛选出的优异资源进行牧草改良和小麦远缘杂交育种,为冰草种质资源的深入利用奠定基础。

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doi: 10.13430/j.cnki.jpgr.20260623002
  • 接收时间:2026-06-23
  • 首发时间:2026-09-30
  • 出版时间:2026-07-16
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  • 收稿日期:2026-06-23
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    1中国农业科学院作物科学研究所/作物基因资源与育种全国重点实验室,北京 100081
    2崖州湾国家实验室,海南 三亚 572024

通讯作者:

李立会,研究方向为小麦种质资源,E-mail:
周升辉,研究方向为小麦种质资源,E-mail:
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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