小菜蛾对沙蚕毒素类杀虫剂抗性的生化遗传分析  

Biochemical genetic mechanisms of resistance to dimehypo and cartap in diamondback moth,Plotella xylostella L

作　　者：程罗根[1] 陈之浩[2] 李凤良[2] 韩招久[2] 李忠英[2] 

机构地区：[1]南京师范大学生命科学学院,江苏南京210097 [2]贵州省农业科学院植保所,贵州贵阳550006

出　　处：《南京农业大学学报》2003年第3期46-48,共3页Journal of Nanjing Agricultural University

基　　金：国家自然科学基金资助项目 (3 9770 5 0 4)

摘　　要：利用室内选育的小菜蛾抗杀虫双品系、抗杀螟丹品系和敏感品系 ,研究了各杂交世代小菜蛾的生物学特性以及蛹期的乙酰胆碱酯酶 (AchE)和羧酸酯酶 (CarE)活性。结果表明 :杀虫双和杀螟丹的选择作用没有改变小菜蛾的性比、蛹重和羽化率等生物学特性 ;抗性品系和敏感品系的AchE和CarE活性没有明显差异。由此进一步证明AchE和CarE的活性变化不是小菜蛾对杀虫双和杀螟丹抗性的主要机理。The biological characteristics and the activities of acetylcholinesterase(AchE)and carboxylesterase(CarE)in pupa of diamondback moth( Plotella xylostella L )were studied.The laboratory reared dimehypo and cartap resistant,and susceptible strains were used.The results showed that the biological characteristics of sexual proportion and pupa weight and emergence rate were not altered by the selection of dimehypo and cartap.There was no significant difference in the activities of AchE and CarE between resistant and susceptible strains.

关 键 词：小菜蛾 沙蚕毒素类杀虫剂 抗性 生化遗传 乙酰胆碱酯酶 羧酸酯酶 生物学特性 酶活性 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治] S482.3[农业科学—植物保护]