山西省小麦育成品种遗传及多样性分析
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山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所,山西省农业科学院小麦研究所

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山西省农科院育种工程项目(17yzgc010),山西省重点科技创新平台(201605D151002),国家重点研发计划项目(2017YFD0100600)


Inheritance and Diversity Analysis of Wheat Cultivars in Shanxi Province
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Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences,Institute of WheatResearch,Shanxi Academy of Agricultural Sciences

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    摘要:

    采用102对SSR标记对山西省建国以来162个小麦育成品种进行遗传分析。研究结果表明,标记的平均等位变异丰富度为3.94,多态信息含量(PIC)的变幅为0-0.810,平均多态信息含量为0.446,说明山西省小麦育成品种的遗传多样性较丰富,其中2000-2005年审定品种的遗传多样性最高。根据Nei"s遗传距离进行聚类分析,将山西省小麦品种分为3个类群,类群分类主要与育成年代和地理分布有关,其中第Ⅲ类群的遗传距离较大、遗传差异较明显。通过分析品种间穗粒数、千粒重和叶绿素含量相关的位点后发现,不同年代的品种中优异等位变异频率随着年代逐渐增长,但部分位点的优异等位变异频率仍然偏低,表明重要农艺性状仍有较大的改良潜力。

    Abstract:

    102 SSR markers were used to analyze the genetic diversity of 162 wheat modern varieties in Shanxi. The average allelic variation richness of 102 markers was 3.94, the polymorphic information content (PIC) was between 0-0.810, and the average polymorphism information content was 0.446, indicating that the genetic diversity of wheat cultivars in Shanxi province was rich. Among the varieties analyzed, those registered during 2000-2005 have the highest genetic diversity. Cluster analysis based on the Nei"s genetic distance separated the 162 varieties into three groups, group classification is mainly related to breds and geographical distribution, the third group has the largest genetic difference. By analyzing the markers related to grain numbers, thousand grain weight and chlorophyll content, it was found that the frequency of favorable allelic variation gradually increased with years, indicating the potential in improving yield traits of wheat varieties in Shanxi.

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郑军,李晓华,赵佳佳,等.山西省小麦育成品种遗传及多样性分析[J].植物遗传资源学报,2018,19(4):619-626.

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  • 收稿日期:2017-11-05
  • 最后修改日期:2017-11-28
  • 录用日期:2017-12-28
  • 在线发布日期: 2018-07-16
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