皱肋文蛤壳色与数量性状的相关性研究Research on the Correlation between the Shell Colors And Quantitative Traits of Meretrix lyrata
王瑞东,孙宗红,刘志刚
摘要(Abstract):
皱肋文蛤(Meretrix lyrata)养殖群体存在壳色变异,为了解湛江市沿海地区皱肋文蛤多态性及其与数量性状的相关性,对其不同养殖群体壳色和生长相关性进行研究。结果表明,在10个不同的皱肋文蛤养殖群体共10 247个个体中,存在白色和红褐色2种壳色表型,白壳色、红褐壳色比率各占(91.15±1.83)%、(8.85±1.83)%;红褐壳色和白壳色个体之间在壳长、壳高、壳宽、体质量、壳质量和软体部质量等几个数量性状上均无显著性差异(P>0.05),但红褐壳色群体壳长、壳高及体质量变异系数要显著大于白壳色群体(P<0.05),红褐壳色遗传多样性更高;大部分红壳色群体峰度值及偏度值大于白壳色,其大个体性状值离均值大于白壳色,与群体之间的分化更明显,对这些群体的红壳色大个体进行选育比白壳色将更有效;构建选育基础群体时,对变异系数大、峰度值高、偏度值大的群体应予以更多关注。
关键词(KeyWords): 皱肋文蛤;壳色;多态性;生长;数量性状
基金项目(Foundation): 广东省海洋渔业科技推广专项(A200899E04;A200908E05);; 广东省教育厅(GCZX-A0909);; 高校重大科研成果培育计划GDOU2013050326
作者(Author): 王瑞东,孙宗红,刘志刚
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