Article(id=1236367332856099157, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1236367331312595268, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1000-2561.2023.04.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1655740800000, receivedDateStr=2022-06-21, revisedDate=1658592000000, revisedDateStr=2022-07-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1772702542747, onlineDateStr=2026-03-05, pubDate=1682352000000, pubDateStr=2023-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772702542747, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772702542747, creator=13701087609, updateTime=1772702542747, updator=13701087609, issue=Issue{id=1236367331312595268, tenantId=1146029695717560320, journalId=1235980609244409860, year='2023', volume='44', issue='4', pageStart='661', pageEnd='866', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772702542379, creator=13701087609, updateTime=1772702636855, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236367727644955170, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1236367331312595268, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236367727644955171, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1236367331312595268, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=706, endPage=715, ext={EN=ArticleExt(id=1236367333107757410, articleId=1236367332856099157, tenantId=1146029695717560320, journalId=1235980609244409860, language=EN, title=Genetic Diversity of Phenotypic Traits in 81 Capsicum annuum Germplasms, columnId=1236256430060261740, journalTitle=Chinese Journal of Tropical Crops, columnName=Germplasm Resources, Genetics & Breeding, runingTitle=null, highlight=null, articleAbstract=

In this study, 20 phenotypic traits of 81 Capsicum annuum germplasm resources were analyzed by genetic diversity, correlation, principal component analysis and cluster analysis. The result showed that the genetic diversity index (H´) of the 20 phenotypic traits was 5.91-6.32, Shannon-Wiener diversity index of leaf shape was the highest, and one quantitative trait had the coefficient of variation (CV) of 29.28%, indicating that rich genetic diversity in the phenotypic traits of 81 C. annuum germplasms. The correlation analysis indicated that there were 65 correlation coefficients between traits reaching significant or extremely significant level, indicating that most phenotypic traits influenced and promoted each other. The results of principal component analysis showed that the cumulative contribution rate of the first four principal components was 57.526%, and represented the main information of phenotypic traits of C. annuum, indicating that the four principal components could reflect the basic characteristics of 20 phenotypic traits. Based on the eigenvalue and contribution rate, fruit shape, fruit shoulder shape, leaf shape, nodal position of first flower, spicy taste, fruit color, cotyledon color, main stem color, anther color, hypocotyl color and style color were the main factors causing phenotypic differences of C. annuum germplasms. The cluster analysis results showed that the 81 C. annuum germplasms were divided into 5 groups at a genetic distance of 16.0 which effectively distinguished the germplasm of different genetic relationships. Group Ⅰ contained 21 germplasms that were C. chinense Jacquin, which had light green cotyledon, flat lantern fruit shape and extremely spicy taste. Group Ⅱ contained 38 germplasms which were mainly based on C. annuum var. lgrossum, and the main characteristics were no stem hair, medium branching, lantern fruit shaped and no spicy taste. Group Ⅲ contained 20 germplasms that were mainly based on C. annuum var. longum, which were mainly characterized by no shoulder shape, purple hypocotyl and spicy taste. Group Ⅳ and Group Ⅴ were composed of one germplasm, indicating that the two germplasm (L206 and L508) were far related to other germplasms and could be used for parental selection in C. annuum breeding. The research would provide an important reference for the utilization, innovation of C. annuum germplasm resources and variety breeding.

, correspAuthors=Xuanmin DANG, 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, authorCompany=null, fund=null, authors=null, authorsList=Linya LIU, Yacheng HUANG, Na YANG, Weixia LIU, Yanmei ZHAO, Caifeng LONG, Xuanmin DANG), CN=ArticleExt(id=1236367333418135920, articleId=1236367332856099157, tenantId=1146029695717560320, journalId=1235980609244409860, language=CN, title=81份辣椒种质资源表型性状的遗传多样性分析, columnId=1236256430219645304, journalTitle=热带作物学报, columnName=种质资源与遗传育种, runingTitle=null, highlight=null, articleAbstract=

本研究以81份辣椒为研究材料，对20个表型性状进行遗传多样性分析、相关性分析、主成分分析及聚类分析。结果表明：20个表型性状的Shannon-Wiener多样性指数（H′）的变化范围为5.91~6.32，其中叶形的H′值最高，1个数量性状的变异系数（coefficient of variation, CV）为29.28%，表明81份辣椒种质的表型性状具有丰富的遗传多样性。相关性分析表明，各表型性状间的相关系数中达到显著或极显著的性状有65对，说明大部分表型性状间相互影响。主成分分析结果表明，前4个主成分累计贡献率为57.526%，代表了辣椒表型性状的主要信息量，说明这4个主成分可反映20个表型性状的基本特征；从特征值和贡献率来看，果形、果肩形状、叶形、首花节位、辣味、果色表明光滑度、子叶颜色、主茎色、花药颜色、下胚轴颜色和花柱颜色是引起辣椒种质表型差异的主要因素。聚类分析结果表明，在遗传距离为16.0时，81份辣椒种质可聚为5个类群，有效区分了不同亲缘关系的种质；其中第Ⅰ类群包含21份种质，均为黄灯笼辣椒，主要特征是浅绿色子叶、扁灯笼果形、辣味极辣；第Ⅱ类群包含38份种质，以灯笼椒为主，主要特点为无茎茸毛、分枝性中等、灯笼果形、无辣味；第Ⅲ类群包含20份种质，以长形椒为主，主要特征是无果肩、紫色下胚轴、辣味辣；第Ⅳ类群和第Ⅴ类群分别由1份种质材料组成，表明这2份种质（L206和L508）与其他种质亲缘关系较远，可用于辣椒育种的亲本选配。本研究为辣椒种质资源的利用、创新及品种选育提供了重要参考。

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^3.海南大学热带作物学院，海南海口　570228, bio={"content":"

刘林娅（1987—），女，博士，副教授，研究方向：蔬菜遗传育种。

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刘林娅（1987—），女，博士，副教授，研究方向：蔬菜遗传育种。

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