中国水稻科学2012，Vol.26Issue(4)：481-486,6.DOI:10.3969/j.issn.1001-7216.2012.04.014
二化螟越冬种群特点及其对三唑磷靶标抗性突变频率分析
Characteristics of Overwintering Populations of Rice Stem Borers and Mutation Frequencies of Resistance to Triazophos
摘要
Abstract
Population structure and individual body weight of overwintering populations of Chilo suppressalis collected at 20 locations in China from September 2010 to February 2011 were compared. And the mutations associated with resistance to triazophos, an organophosphate insecticide, among these populations was also analysed by restriction fragment length polymorphism PCR (RFI.P PCR). Results showed that the 6th instar larva was the predominant in 18 of 20 populations, and the composition of the overwintering populations didn t vary with geographic locations, with the 4th, 5th or 6-1 instar larvae accounting for more than 90 percents of the overwintering individuals. Besides that, results also showed that the mutation frequencies associated with triazophos resistance differed among geographical populations, which closely related with the occurrence of the pest. In regions where C. suppressalis occurred frequently and severely, such as Zhejiang, Fujian Province and so on, high mutation frequencies were observed (ranged from 31.3% to 100%), while in other regions where C. suppressalis occurred infrequently, such as Funan, Anhui Province, Deyang,Sichuan Province, the mutation freqencies were relatively low (ranged from 0% to 23%).关键词
二化螟/越冬代种群/三唑磷/靶标抗性/突变频率Key words
Chilo suppressalis/ overwintering populations/ triazophoss insecticide resistance/ mutation frequency分类
农业科技引用本文复制引用
罗光华,张志春,韩光杰,韩召军,方继朝..二化螟越冬种群特点及其对三唑磷靶标抗性突变频率分析[J].中国水稻科学,2012,26(4):481-486,6.基金项目
国家水稻产业技术体系资助项目(Cars-001-25) （Cars-001-25）
中国博士后科学基金资助项目(20110491367) （20110491367）
江苏省农业科技创新资金资助项目(Cx(10)418). （Cx(10）
