摘要
在室内用甲氧虫酰肼对斜纹夜蛾进行了抗性选育，并研究了斜纹夜蛾对甲氧虫酰肼的抗性现实遗传力和抗性风险。结果表明：经过12代9次选育，斜纹夜蛾对甲氧虫酰肼抗性发展缓慢，与选育前相比敏感性降低3．95倍，斜纹夜蛾对甲氧虫酰肼的抗性现实遗传力为0．1199；在致死率为50％-90％的筛选压力下，要获得10．00倍抗性，需要8-18代，表明斜纹夜蛾对甲氧虫酰肼产生抗性的风险很小。
Common cutworms, Spodoptera litura （Fabricius）, were artificially selected in the laboratory for resistance to methoxyfenozide, and the realized resistance heritability and resistance risk were evaluated. The results showed that after selection with methoxyfenozide 9 times during 12 generations, S. litura exhibited 3.95-fold reduced susceptibility to methoxyfenozide compared with unselected parent strain, which indicated slow development of resistance to methoxyfenozide in this important agricultural pest. According to the relatively low realized resistance heritability （h^2 = 0. 119 9） and assuming selection pressure being 50% -90%, it required 8 - 18 generations for S. litura to develop 10. 00-fold resistance to methoxyfenozide. These results suggested that S. litura may have limited resistance risk to methoxyfenozide.
出处
《江苏农业学报》
CSCD
北大核心
2009年第1期79-83,共5页
Jiangsu Journal of Agricultural Sciences
关键词
甲氧虫酰肼
斜纹夜蛾
抗性选育
现实遗传力
风险评估
methoxyfenozide
Spodoptera litura
resistance selection
realized heritability
risk accessment
