不同四川黑山羊品种mtDNAD-loop区遗传多样性分析Genetic Diversity of mtDNA D-loop of Different Black Goat Breeds in Sichuan Province
江昱;王杰;金鑫燕;
摘要(Abstract)：
[目的]从分子水平上探讨四川4个黑山羊品种的遗传多样性和亲缘关系,为黑山羊品种的保护及合理利用提供理论依据。[方法]采用mtDNA多态性标记对四川4个黑山羊品种D-loop序列多态性进行分析。[结果]供试黑山羊品种mtDNAD-loop片段长度为1210～1212bp,共检测到5种单倍型,群体间共有多态位点65个,单一多态位点33个,简约信息位点32个,平均核苷酸歧异度为0.001518,D-loop序列多态性较贫乏;经聚类分析,乐至黑山羊和金堂黑山羊首先聚在一起,后与建昌黑山羊聚合,最后和自贡黑山羊聚在一起。[结论]4个黑山羊品种的mtDNA遗传多样性贫乏,分化程度低;聚类分析结果与品种来源和生态地理分布相一致。
关键词(KeyWords)： 黑山羊;mtDNAD-loop环;遗传多样性
基金项目(Foundation):
作者(Author): 江昱;王杰;金鑫燕;
Email:
DOI: 10.13989/j.cnki.0517-6611.2010.27.179
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