家蚕抗病性与经济性状的相关性研究

Study on the Correlation between Disease Resistance and Economic Characters of Silkworm

[目的]研究家蚕经济性状与抗病性之间的相关性。[方法]通过对15个家蚕品种品系在常规饲育条件下的经济性状和抗病性进行调查,对经济性状与抗病性进行相关性分析。[结果]单蛾卵量、全茧量、茧层量、茧层率与虫蛹率均呈负相关,其中茧层量与虫蛹率呈显著负相关;单蛾卵量、全茧量、茧层量、茧层率与幼虫生命率虽然未达显著相关,但均呈负相关。[结论]家蚕抗病性与经济性状呈负相关或显著负相关。在家蚕品种的选育过程中,应当兼顾经济性状与抗病性。

[ Objective] The research aimed to study the correlation between the economic characters and the disease resistance of silkworm. [ Method ] The economic characters and disease resistance of 15 silkworm varieties under normal rearing conditions were investigated to analyze the correlation between the economic characters and disease resistance. [ Result]The egg -quantity of single moth,whole cocoon weight,cocoon shell weight,cocoon shell rate all showed negative correlations with larva- pupa survival rate and the correlation between the cocoon shell weight and pupation rate was significant. The correlations between egg -quantity of single moth,whole cocoon weight, cocoon shell weight,cocoon shell rate and larva- pupa survival rate were not significant,but the correlations were negative. [ Conclusion ] The disease resistance of silkworm showed a negative or significant negative correlation with the economic characters. Both the economic characters and the disease resistance should be con- sidered in the breeding process of silkworm.