›› 1996, Vol. 39 ›› Issue (4): 342-346.

• 研究论文 • 上一篇    下一篇

棉铃虫对拟除虫菊酯抗性稳定性研究

吴益东 沈晋良 谭福杰 尤子平   

  • 出版日期:1996-11-20 发布日期:1996-11-20

STABILITY OF PYRETHROIDS RESISTANCE IN HELICOVERPA ARMIGERA (HUBNER)

Wu Yidong Shen Jinliang Tan Fujie You Ziping   

  • Online:1996-11-20 Published:1996-11-20

摘要: 研究棉铃虫Helicoverpa armigera (Hubner)对三种拟除虫菊醌(氰戊菊酯、溴氰菊酯、功夫菊酯)的抗性稳定性及敏感性恢复表明,即使棉铃虫对氰戊菊酯的抗性达到3166.3倍以上,抗性仍不稳定,经14代室内饲养后抗性下降为61.4倍;对一系列田间抗性种群的抗性稳定性研究后发现,棉铃虫对这三种拟除虫菊酯的抗性不稳定,在没有杀虫剂选择的情况下,开始几代抗性下降较快,当下降到一定水平(2~9倍)后,抗性比较稳定,很难完全恢复对拟除虫菊酯的敏感性。

关键词: 棉铃虫, 拟除虫菊酯, 抗性稳定性

Abstract: Regression of pyrethroids resistance in Helicoverpa armigera (Hubner)following several generations of insecticide-free laboratory rearing was evaluated.Although laboratory selected Fen-R strain had extremely high level resistance to fenvalerate (3 166.3 fold), the resistance was unstable and decreased to 61.4 fold after14 generations when selection was suspended. Studies on several field-collected cotton bollworms resistant to pyrethroids (fenvalerate, deltamethrin & cyhalothrin) showed that their resistance was also unstable; it declined rapidly without contact with the pyrethroids at first and then stablized at a 2- 9 fold level. It seemed very difficult to recover susceptibility completely to the three pyrethroids.

Key words: Helicoverpa armigera (Hubner), pyrethroids, resistance stability