›› 2003, Vol. 46 ›› Issue (1): 18-21.

• 研究论文 • 上一篇    下一篇

小菜蛾对苦皮藤素抗性选育及交互抗性测定

李二虎1,吴文君1*,陈之浩2,李凤良2,李忠英2   

  • 出版日期:2003-02-20 发布日期:2003-02-20

Selection for celangulin resistance and cross-resistance in the diamondback moth, Plutella xylostella (L.)

LI Er-Hu1, WU Wen-Jun1, CHEN Zhi-Hao2 ,LI Feng-Liang2, LI Zhong-Ying2   

  • Online:2003-02-20 Published:2003-02-20

摘要: 敏感小菜蛾Plutella xylostella (L.)经苦皮藤素20代的抗性选育,其抗性增长21.57倍。选育的小菜蛾抗性品系对杀虫双、杀螟丹和叶蝉散分别有4.63、4.11和3.71倍的交互抗性;对溴氰菊酯、氯菊酯、氯氰菊酯分别有0.22、0.01和0.26倍的负交互抗性。高抗杀螟丹、杀虫双小菜蛾品系对苦皮藤素无明显交互抗性,而高抗溴氰菊酯小菜蛾品系对苦皮藤素有3.61倍的交互抗性。

关键词: 小菜蛾, 苦皮藤素, 抗药性

Abstract: After artificial selection for resistance to 0.2% celangulin EC for 20 generations, resistance of the diamond back moth, Plutella xylostella (L.) fourth instar larvae to this pesticide increased 21.6-fold. The development of resistance was slow initially, faster in the mid-stage, and stable in the later stage.The celangulin-resistant strain had positive cross-resistance to dimehypo, cartap and isoprocarb (R/S was 4.63, 4.11 and 3.71 respectively), and negative cross-resistance to deltamethrin, cypermethrin and permecthrin (R/S was 0.22, 0.26 and 0.01 respectively). The cartap-, dimehypo- and deltamethrin-resistant strains had 1.06-, 1.76- and 3.61-fold resistance to 0.2% celangulin EC, respectively.

Key words: Plutella xylostella, celangulin, insecticide resistance