贵州三叶木通遗传多样性及亲缘关系分析
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贵州省优秀科技教育人才省长专项 [黔省专合字(2012)10号]


Analysis of Genetic Relationship and Genetic Diversity of Akebia trifoliata in Guizhou
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    摘要:

    为科学保存和利用贵州三叶木通资源,采用AFLP和ISSR分子标记技术对贵州省部分县(市)的31份三叶木通资源进行遗传多样性及亲缘关系分析。结果显示:(1)两种标记方法分别通过8对引物扩增出9 252条、11 643条DNA谱带,多态性条带分别为8 818、11 643,扩增多态率分别为95.31%和100%,说明供试种质资源遗传多样性较丰富。(2)AFLP和ISSR方法所得遗传相似系数区间分别为0.762 3~0.893 5和0.828 9~0.917 1,说明不同种质间存在一定的遗传差异。(3)聚类分析表明,在遗传相似系数0.85处,31份三叶木通种质资源分别被聚为5组(AFLP)和3组(ISSR),其中26号(74中1)、27号(811)、28号(83中)和30号(93中1)4个资源及31号(941)和29号(92S1)2个资源在两组分析方法中分别处于同一亚组内,说明其为亲缘关系较近的样本,且样本4号(22N1)、8号(31S1)和样本26号(74中1)、27号(811)两两相似系数最大,可能是同一来源的种质。

    Abstract:

    For conservation and utilization of Akebia trifoliata resources scientifically in Guizhou, we chose two kinds of method called AFLP and ISSR markers to analysis the genetic relationship and genetic diversity about A. trifoliata with total of 31samples. They came from part of the county or city in Guizhou Province. The results showed that: (1) with 8 pairs of primer we gained 9 252 and 11 643 amplification DNA bands, respectively,The polymorphism rates are 95.31% and 100%, respectively, meaning that the germplasm diversity is abundant in tested samples. (2) For AFLP and ISSR, the ranges of similarity coefficient are between 0.762 3 to 0.893 5 and 0.828 9 to 0.917 1 respectively, showing that the resources of A. trifoliata has a certain genetic differences between different species in Guizhou. (3) Clustering analysis told us, in the similarity coefficient of 0.85, 31 A. trifoliata resources were divided into 5 groups and 3 group, among them the No. 26, No.27, No.28, No.30 samples belong to the same group, as well as No.29 and No.31.Especially No.4, No.8 and No.26, No.27 may be the same source of germplasm,because they got the largest similarity coefficient in each other.

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张 雪,马玉华,仲伟敏.贵州三叶木通遗传多样性及亲缘关系分析[J].西北植物学报,2016,36(11):2192-2197

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  • 在线发布日期: 2016-12-12
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