应用双列杂交的Hayman法对家蚕的产卵数进行了遗传分析,基因的加性效应和显性效应对产卵数均有明显的影响,基因显性作用在同一方向,无母体效应和正反交效应,符合Mather的加性-显性模型,控制产卵数的遗传基因有4对,广义遗传力为0.855、狭义遗传力为0.173,平均显性度为2.07、具有超显性现象,显性位点上的基因分布是不对称的,文中还讨论了遗传参数的构成及育种学意义。 Hayman’s method was used to analyze the spawning number of silkworms. The additive and dominant effects of genes had a significant effect on the number of spawning eggs. The genes were dominant in the same direction without maternal effect and positive The anti-cross-effect was in line with Mather’s additive-dominance model. There were 4 pairs of genes controlling the number of spawning, with a generalized heritability of 0.855, a narrow heritability of 0.173 and an average dominant degree of 2.07. The distribution of genes on the dominant sites is asymmetric. The composition of genetic parameters and the significance of breeding are also discussed.