:“十二五”农村领域国家科技计划课题(2013BAD01B0105) ;农作物种质资源保护项( 2016NWB037)第一作者李鸿雁,博士,研究员,研究方向为牧草种质资源保存、创新与育种, E-mail:hongyli1964@126.com通信作者李志勇,博士,研究员,研究方向为牧草种质资源保存与创新, E-mail:zhiyongli1216@126.com 内蒙古78份野生葱属种质资源表型性状遗传多样性分析
为了揭示内蒙古野生葱属种质资源表型遗传多样性,采用多种分析方法,对收集的78份野生葱属种质资源的14个表型性状进行了遗传多样性评价。结果表明:内蒙古葱属资源存在丰富的遗传多样性。14个表型性状平均变异系数为43.0%,叶片宽的变异系数最大,为94.7%;种子厚的变异系数最小,为14.6%。14个表型性状可归成为6个主成分因子,累计贡献率达到80.77%,最大程度上反映了所有78份葱属种质资源的表型特征。14个表型性状间存在显著或极显著的相关性。采用欧氏距离系统聚类法将78份葱属种质资源分为7大类。本研究为内蒙古葱属资源的利用提供了科学依据。
In this study, a total of 14 morphological characters were investigated to reveal the genetic diversity in 78 accessions of Allium L. germplasms from Inner Mongolia in China. The results show that the Inner Mongolia Allium L. germplasms has abundant genetic diversity. The variation of average coefficient in 14 phenotypic traits was 43.0%, among them the number of flowers was the largest (94.7%) and seed thick was the smallest (14.6%). 14 phenotypic traits can be classified into six principal components, and the cumulative contribution rate was reached 80.77%, which could be reflected the phenotypic characteristics mostly among all of 78 accessions. A significant correlation was existed between the 14 phenotypic traits. The 78 accessions were divided into seven categories by using Euclidean distance system. This study reveals a higher genetic diversity existing in the Allium L.germplasms, provide a important implication for Allium L. germplasm characterization, improvement, and conservation.
李鸿雁,李俊,黄帆,等.内蒙古78份葱属野生种表型遗传多样性分析[J].植物遗传资源学报,2017,18(4):620-628.
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