摘要
采用人工饲料感染法监测了我国不同地区小菜蛾田间种群对中国标准品Ｃｓ３ａｂ－１９９１的敏感性。结果表明：广东省深圳、东莞、广州的田间小菜蛾对苏云金芽胞杆菌产生了明显的抗性，最高抗性倍数分别为８．９，６．５，２．１。深圳的抗性小菜蛾种群在无毒条件下饲养，抗性会自然减退，经５代之后抗性消失。
The susceptibility of Plutella xylostella (L.) collected from different areas in P. R. China to Bacillus thuringiensis (Bt) standard powder Cs3ab1991 was monitored. The results showed that the P. xylostella field populations in Guangdong Province were remarkably resistant to Cs3ab1991, the maximun resistance ratios (RR) of Shenzhen, Dongguan and Guangzhou populations were 8.9, 6.5 and 2.1 respectively. Reared under laboratory conditions without exposure to any Bt formulations, the resistnace of the P. xylostella colony from Shenzhen declined rapidly. It became susceptible to Cs3ab1991 after 5 generations.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1998年第3期214-217,共4页
Journal of Huazhong Agricultural University
基金
国家自然科学基金
澳大利亚ACIAR资助
关键词
苏云金芽胞杆菌
小菜蛾
抗性
Bacillus thuringiensis, Plutella xylostella (L.), resistance
