小菜蛾不同抗性品系杂交后代对药剂敏感性分析  

Sensitive Analysis of Prongenys of Different Resistant Strains in Plutella xylostella

作　　者：刘虹伶[1] 李庆[1] 李凤良[2] 李忠英[2] 金剑雪[2] 

机构地区：[1]四川农业大学农学院,四川雅安625014 [2]贵州省农业科学院植保所,贵州贵阳550006

出　　处：《西南农业学报》2010年第2期416-419,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金资助项目(30560085)

摘　　要：利用室内选育的小菜蛾(Plutella xylostella)抗溴氰菊酯品系(R1)和抗杀虫双品系(R2)为亲本,进行正反杂交,对其后代的两个种群及亲本进行毒力测定,分析小菜蛾对溴氰菊酯和杀虫双药剂的敏感性。结果表明:正反杂交后代两种群对溴氰菊酯和杀虫双不敏感;后代种群F1代与亲本对药剂的敏感性无显著性差异;后代两种群对药剂的敏感性有明显逐代上升趋势。Using selection of deltamethtin-resistant strain and dimpehypo-resistant strain in Plutella xylostella as parents, reciprocal hybridzations,toxicity test on deltamethtin-reslstantd,dimpohyporesistant and their prongenys were measured. Susceptibility of Plutella xylostella to dehamethtin and dimpehypo was tested,respectively. The results showed that： two population of progenys of reciprocal hybridzations were insentitive to deltamethtin and dimpehypo; there was no signi^eant between the progeny F1 and parents; two population of progenys of reciprocal hybridzations had a significant rising trend in the successive generations.

关 键 词：小菜蛾 抗性 杂交后代 敏感性 

分 类 号：S436.341.24[农业科学—农业昆虫与害虫防治]