小菜蛾对溴氰虫酰胺的敏感基线及抗药性现状  

The sensitivity baseline and current insecticide resistance of Plutella xylostella to cyantraniliprole

作　　者：林庆胜[1] 冯夏[1] 胡珍娣[1] 尹飞[1] 包华理[1] 李振宇[1] 莫严[1] 陈焕瑜[1] 

机构地区：[1]广东省农科院植物保护研究所/广东省植物保护新技术重点实验室,广东广州510640

出　　处：《广东农业科学》2014年第15期76-78,共3页Guangdong Agricultural Sciences

基　　金：国家公益性行业(农业)科研专项(201103021);广东省自然科学基金(S2013040015379;S2013010012529);广州市科技计划项目科学研究专项(2014J4100197);广东省农科院院长基金(201206);广州市农业科技项目(GZCQC1202FG04002)

摘　　要：应用药膜法测试了小菜蛾敏感种群对最新杀虫剂溴氰虫酰胺的敏感基线,比较了4个田间种群对溴氰虫酰胺和氯虫苯甲酰胺的抗性水平,首次发现并报道了小菜蛾溴氰虫酰胺抗性田间种群。研究结果表明,小菜蛾敏感种群对溴氰虫酰胺的LC50为0.54 mg/L;岑村、惠州和石井田间种群对溴氰虫酰胺的LC50分别为10.64 mg/L、37.72mg/L和21.92 mg/L,达到中抗水平,对氯虫苯甲酰胺的LC50分别为71.1 mg/L、63.73 mg/L和40.82 mg/L,为高抗种群;连州田间种群对溴氰虫酰胺的LC50为0.23 mg/L,处于敏感状态,对氯虫苯甲酰胺的LC50为0.98 mg/L,属低抗水平。小菜蛾田间种群对溴氰虫酰胺抗药性的发展趋势与氯虫苯甲酰胺一致。Cyantraniliprole is the newest commercial insecticide from the anthranilic diamides.In the present work,the baseline susceptibility to cyantraniliprole for Plutella xylostella was surveyed from a susceptible strain（Roth） and four geographical populations sampled from Guangdong province,China,and the median lethal concentrations（LC50） were assayed by using the pesticide-membrane method.The sensitivity baseline of P.xylostella to cyantraniliprole was 0.54 mg/L,and the LC50 s of the Cencun,Huizhou and Shijing population from Guangdong province to cyantraniliprole were 10.64,37.72,21.92 mg/L,respectively,which were 19.55- to 69.85- fold higher than the LC50 of Roth.The LC50 of the three populations to chlorantraniliprole was 71.1,63.73,40.82 mg/L,respectively.However,the Lianzhou field population remains susceptibility to cyantraniliprole,LC50 was 0.23 mg/L.The result showed that middle level of resistance to cyantraniliprole had evolved in field populations from Guangdong province of Southern China,and the developing trend was consistent with chlorantraniliprole,so the farmers should be careful to use this insecticide.

关 键 词：小菜蛾 溴氰虫酰胺 抗药性 

分 类 号：S436.341.24[农业科学—农业昆虫与害虫防治]