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板栗及其近缘种叶绿体SSR遗传多样性分析

DOI: 10.7668/hbnxb.2015.02.026, PP. 145-149

Keywords: 板栗,叶绿体微卫星DNA,遗传多样性,序列

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Abstract:

为了探明板栗及其近缘种的亲缘关系并分析栗属的遗传多样性,基于叶绿体微卫星标记技术,选用4对呈现多态性的cpSSR引物,对板栗及其近缘种、野生种共6个种,56份材料进行遗传结构、遗传关系等分析。4个位点扩增等位基因数(Na)平均为3.25,有效等位基因数(Ne)平均为2.554,期望杂合度(He)平均为0.606,群体Nei's遗传多样性(Hs)为0.320,各遗传参数值均低于核基因组对群体研究的相应值。另外,各种之间有丰富的cpSSR多样性,尤以野生板栗多样性指数最高。结果表明,我国天然野生板栗群体内蕴含更丰富的遗传变异,为我国板栗野生种质保育及可持续开发利用提供了基础数据和科学依据。

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