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期 刊 ：植物保护学报 2000年

关键词：BT棉；棉铃虫；杀虫活性；转基因棉；抗虫棉；

Keywords:Bt transgenic cotton, cotton bollworm, lethal activity,

摘 要 ：以我国研制的转基因抗虫棉(Bt棉)品系CK595-1为材料,系统研究了对棉铃虫1～5龄幼虫存活及生长发育的影响。结果表明,Bt棉对棉铃虫的杀虫活性和体重抑制率有明显的器官和幼虫龄期间差异,其活性顺序为叶>蕾>铃>花,其作用随着幼虫龄期的增大而降低。棉铃虫1～4龄幼虫连续取食Bt棉叶片和棉蕾不能正常化蛹,5龄幼虫可部分化蛹及羽化;1～4龄幼虫取食Bt棉的花及2～5龄幼虫连续取食Bt棉铃后均可部分化蛹及羽化,化蛹率随龄期增大而增加。

Abstract:The effects of GK 95-1, a Bt(Bacillus thilringiensis) transgennic cotton line developed by Chinese researchers, on the growth and development of 1st to 5th instar larvae of cotton boll worm Helicoverpa armigera (Hubner) were systematically evaluated. The

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