摘要： 本文运用完全双列杂交的方法，估测了家蚕在胚胎期对高温干燥催青条件耐受性的有关遗传参数。家蚕种对高温干燥催青的耐受性，在原种间和杂交组合间有明显差异。耐受性是一种遗传性性状，由遗传基因控制。经估算的广义遗传力大于狭义遗传力。有超显性现象。控制家蚕对高温干燥催青的耐受性的基因数目不少于两个。显性效应大于加性效应。显性效应为非单向性的。显性位点上的基因分布为不对称性。
Abstract:Some genetic parameters about endurance of silkworm to high temperature and low humidity condition during embryo stage were calculated in complete diallel crossing(6×6).There was clear variation in the endurance of both parents and F1 to the incubating condition of high temperature and low humidity.Endurance is a supper-dominant character controlled by genes not less than two.The generalized heritability is greater than narrow heritability .The effects of dominant genes were non-unidirection,with the dominant effect greater than additive effect.The distribution of genes on the location of the dominance is not symmetric.