三角鲂与团头鲂正反杂交F1的遗传性状

采用聚类分析、主在分分析和判别分析3种数理统计方法，对团头舫、三角鲂及其正反杂交F1的比例性状和框架参数进行分析，探讨了亲本形态性状在子代中的遗传传递情况。结果表明：（1）正反交F1形态都表现出较多的母性遗传特征，但三角鲂母本对杂交F1遗传特征的影响强于团头鲂母本。（2）躯干部特征、头尾轴特征及背棘等为区分团头鲂、三角鲂及其正反杂交F1的重要因子。

A primary study on inheritance of morphological traits from Megalobrarma amblycephala, Megalobrama terminalis to their reciprocal hybrids(F1)

In this paper, the meristic traits and truss network characters of Megalobrama amblycephala, Megalobrama terminalis and their reciprocal hybrids were studied by three multivariate analysis (clustering analysis, discriminant analysis and principal component analysis) , and the genetic transfer of morphology traits from parents to their hybrids was analysed. The results showed: (1) The morphological traits in reciprocal hybrids were more traced through the female ancester. The inheritance from M. terminalis to hybrids was stronger than that from M. amblycephala. (2) The characters of main part of body, head-tail axis,sand hard spine of dorsal fin are important factors to discriminate Megalobrama amblycephala, Megalobrama terminalis and their reciprocal hybrids.