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2. Institute of Grassland, Flowers and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China, correspAuthors=null, 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=1309575134608982920, articleId=1309575132729934726, tenantId=1146029695717560320, journalId=1308397196074385509, language=CN, title=48份狼尾草属材料表型及遗传多样性分析, columnId=1309565024058835950, journalTitle=草地学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=狼尾草属（Pennisetum spp.）植物兼具生态修复、园林观赏与饲用价值，开展狼尾草种质资源遗传多样性研究，可为新品种选育与开发利用提供理论依据。本研究以48份狼尾草种质资源为材料，通过表型性状测定和简单重复序列（Simple sequence repeats，SSR）分子标记技术，系统评价其表型、遗传多样性及群体结构。结果显示，4个表型性状变异系数为28.10%~96.92%，遗传多样性指数为2.49~2.83，多样性丰富；株高与叶宽极显著正相关，分蘖与株高显著负相关、与叶宽极显著负相关；表型聚类可分为3类。SSR标记从20对引物中检测到122个等位基因，平均每对6.10个，Shannon’s多样性指数0.35~0.64，多态性信息含量0.25~0.79，平均遗传距离0.43；基于不同相似系数阈值，UPGMA聚类将供试材料划分为3~5个类群，群体遗传结构可分为3组且组间遗传背景差异显著。本研究阐明了48份狼尾草种质的遗传多样性及群体结构，为后续种质鉴定和新品种选育奠定理论基础。, authors=王伟伟¹, 王豫婉², 郭一荻², 范希峰², 岳跃森², 滕珂², 孙鑫博¹, 刘凌云², authorsList=王伟伟, 王豫婉, 郭一荻, 范希峰, 岳跃森, 滕珂, 孙鑫博, 刘凌云, authorCompany=1 河北农业大学, 河北 保定 071000;
2 北京市农林科学院草业花卉与景观生态研究所, 北京 100097, correspAuthors=null, authorNote=王伟伟(1999-),女,汉族,河北邯郸人,硕士研究生,主要从事狼尾草研究,E-mail:2247128930@qq.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=Cr4moywzWXWNcITgTnIhtg==, pdfFileSize=4297828, 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=国家自然科学基金项目 (32471755); 北京市农林科学院科技创新专项 (KJCX20251208); 云南省重点研发计划 (202403AP140045))}, authors=null, keywords=[Keyword(id=1309579345602114484, tenantId=1146029695717560320, journalId=1308397196074385509, articleId=1309575132729934726, language=CN, orderNo=1, keyword=狼尾草属), Keyword(id=1309579345673417653, tenantId=1146029695717560320, journalId=1308397196074385509, articleId=1309575132729934726, language=CN, orderNo=2, keyword=表型多样性), 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