7个微卫星标记对5个肉用绵羊品种的遗传多样性分析Genetic Diversity Analysis Among 3 Foreign Sheep Varieties and 2 Chinese Local Sheep Varieties by Using 7 Microsatellite Markers
汤晓良;瞿冬艳;陈仁金;毛永江;杨章平;
摘要(Abstract):
[目的]为肉用绵羊的品种资源保护和杂交利用提供理论依据。[方法]利用7个微卫星标记分析国外3个绵羊品种和我国2个地方绵羊品种的遗传多样性,研究其品种内遗传变异和种间遗传关系。[结果]从5个绵羊品种中共检测到105个等位基因,在各群体中每个微卫星座位上均可检测到5个以上等位基因,说明7个微卫星标记含有丰富的遗传信息。位点平均杂合度和品种平均杂合度分别为0.790 1~0.889 7和0.795 1~0.867 5,属于高度杂合位点和高度杂合品种。7个位点均为高度多态位点,PIC为0.762 6~0.879 6,而5个绵羊品种的平均PIC为0.770 3~0.865 0。NJ系统树分析表明3个国外绵羊品种遗传关系较近。[结论]7个微卫星标记均具有高度多态性,可用于绵羊品种的遗传多样性和系统发生关系的分析。
关键词(KeyWords): 绵羊;微卫星;遗传分化;系统地位
基金项目(Foundation):
作者(Author): 汤晓良;瞿冬艳;陈仁金;毛永江;杨章平;
Email:
DOI: 10.13989/j.cnki.0517-6611.2008.12.128
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