河南奶山羊线粒体D-loop区遗传多态性和遗传分化研究
Journal of Henan Agricultural University(2020)
Abstract
为了解河南奶山羊遗传资源现状,对河南奶山羊、萨能奶山羊、关中奶山羊和伏牛白山羊线粒体DNA D-loop区全序列遗传多态性和遗传关系进行分析.结果表明,共存在16种单倍型,各品种单倍型多样度范围为0.391~0.814,核苷酸多样度的范围为0.00035~0.00464,核苷酸平均差异数范围为9.33333~13.66667,核苷酸岐异度变异范围为0.00833~0.01219,遗传分化系数范围为0.13565~0.36010,固定系数范围为0.58323~0.93550.山羊品种间系统发育树表明,河南奶山羊首先与伏牛白山羊聚为一支,其次河南奶山羊与萨能奶山羊聚类,最后与关中奶山羊聚类.系统发育树聚类结果与遗传距离分析、遗传分化分析结果相符,从遗传角度证实了河南奶山羊是以萨能奶山羊为父本,以河南地方品种为母本经杂交选育而成.
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