数字农科院2.0

牛α辅肌动蛋白(α-Actinin)1基因遗传变异与产犊数性状的相关性

文献类型: 中文期刊

作者: 淮亚红;王淑辉;姬爱国;许尚忠;高雪;任红艳;陈金宝

作者机构:

关键词: 牛;辅肌动蛋白1基因;RFLP;双胎

期刊名称:中国生物化学与分子生物学报

ISSN: 1007-7626

年卷期: 2008 年 24 卷 04 期

页码: 351-357

收录情况: 北大核心 ; CSCD

摘要: 为了探讨辅肌动蛋白1(α-actinin1)基因对母牛产犊数的影响,以鲁西单胎牛,鲁西双胎牛,南阳牛,晋南牛,荷斯坦牛,三河牛和延边牛为研究对象,以α-actinin1为影响产犊数的候选基因,分别扩增418bp和505bp2个片段,采用直接测序,RFLP-RsaⅠ和RFLP-ApaⅠ方法检测α-actinin1基因的多态性,并将其与产犊数性状进行了关联分析.在内含子15第227nt处的碱基发生G→A突变,和内含子10第3124nt处发生A→G突变,使其产生酶切多态.对2个酶切多态位点进行基因型分型,χ2检验表明:在G227A位点,除了鲁西单胎牛外,其他群体都已达到Hardy-Weinberg平衡;在A3124G位点,除了鲁西双胎牛外,其余群体都已经达到Hardy-Weinberg平衡.SAS9.0的最小二乘拟和一般线性模型分析结果表明:A3124G位点的AG基因型的产犊数的最小二乘均数极显著(P<0.01)高于基因型AA;而单倍型组合G-G的产犊数的最小二乘均数显著高(P<0.01)于其它3种单倍型组合.α-actinin1基因有可能作为产犊数性状的候选分子的遗传标记.

分类号: S823

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