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牦牛LPL基因外显子7多态性与生长性状相关性的研究

DOI: 10.7668/hbnxb.2010.05.003, PP. 16-19

Keywords: 牦牛,LPL基因,多态性,性状标记,PCR-SSCP

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Abstract:

采用PCR-SSCP技术对5个牦牛品种共398头牦牛脂蛋白脂肪酶基因(LPL)外显子7进行了多态性研究,分析了该基因与牦牛生长性状的相关性.结果表明,牦牛LPL基因外显子7存在2个等位基因3种基因型.各群体在该基因座上呈Hardy-Weinberg平衡状态.三种基因型与牦牛部分生长性状的最小二乘法分析表明,该位点多态与牦牛的体重、体高、胸围存在显著相关(P<0.05),BB型个体体重、体高、胸围显著高于AA和AB型个体.初步推断牦牛LPL基因第7外显子可作为牦牛标记辅助选择的遗传标记之一.

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