摘要： S伴、K05、伴1、S1、D01 5个蚕品种，在胚胎期对高温干燥的催青条件表现敏感性，农 4、新九、限抗对高温干燥催青条件有较高的耐受能力，当用新九的雌与S伴、K05、伴1、S1、D01的雄蛾杂交时，其杂种一代的蚕卵，在高温干燥条件下催青，雌蚕因在胚胎发育过程中对环境条件表现敏感而不能孵化，雄蚕则能正常孵化，因而利用基因与环境的相互作用可以控制家蚕的性别。雌蚕高温干燥条件的敏感性，主要发生在胚胎发育至后期阶段。对S伴等5个温敏性品种的亲缘关系进行RAPD分析，经统计计算，相似率在63.04%~76.47%之间。
Abstract:The silkworm embryo of the varieties,sBan,K05,Ban1,S1 and D05 was sensitive to the high temperature and low humidity incubating condition,while that of Nong4,Xinjiu and Xiankang was more endurable.By crossing the female Xinjiu with the male of sensitive varieties,such as sBaa,K05,Ban1,S1 or D05,their female progenies were sensitive to the high temperature and low humidity during incubation and could not hatch,while the males could hatch normally.Experiment showed that silkworm sex could be controlled by the interaction between gene and environment. The sensitive period was at late stage during the embryo development.The RAPD analysis showed that the similarity index of the five temperature-sensitive varieties of sBan,K05,Ban1,S1 and D05 was 63.04-76.47%.