您好，欢迎访问浙江省农业科学院 机构知识库！
浙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Evidence of field-evolved resistance to Cry1Ac-expressing Bt cotton in Helicoverpa armigera (Lepidoptera: Noctuidae) in northern China

文献类型： 外文期刊

作者： Liu, Fengyi 2 ; Xu, Zhiping 2 ; Zhu, Yu Cheng 1 ; Huang, Fangneng 4 ; Wang, Yanhua 5 ; Li, Huiling 3 ; Li, Hua 3 ; Gao, C 1 ;

作者机构： 1.ARS, JWDSRC, USDA, Stoneville, MS 38776 USA

2.Nanjing Agr Univ, Coll Plant Protect, Dept Pesticide Sci, Nanjing 210095, Peoples R China

3.Huizhou Agr Technol Extens Ctr, Huizhou 516001, Peoples R China

4.Louisiana State Univ, AgCtr, Dept Entomol, Baton Rouge, LA 70803 USA

5.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China

关键词： resistance allele frequency;transgenic Bt cotton;Helicoverpa armigera;F(1) screen;F(2) screen;dose-response bioassay;resistance monitoring

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

ISSN： 1526-498X

年卷期： 2010 年 66 卷 2 期

页码：

收录情况： SCI

摘要： BACKGROUND: Evolution of resistance threatens the continued success of transgenic crops expressing insecticidal proteins. One of the key factors for successful resistance management is the timely implementation of monitoring programmes to detect early changes of resistance allele frequency in field populations. F(1)/F(2). screen, dose-response bioassays and field survey were used to monitor resistance to the Cry1Ac-expressing cotton in a field population of Helicoverpa armigera (Hubner), the primary target of transgenic Bt cotton in China. RESULTS: Field survey showed an increased trend of egg populations of H. armigera on Bt cotton in the Qiuxian area from 2003 to 2007. By using the F(2) screening procedure, the resistance allele frequency in the Qiuxian (Hebei, China) population of H. armigera collected during 2007 was estimated to be 0.075 (95% CI: 0.053-0.100), which was 12 times greater than that estimated 9 years ago. Dose-response bioassay with the field population collected from the same area showed a significant resistance level (11-fold) to Cry1Ac toxin compared to a laboratory susceptible strain. CONCLUSION: This study documented a case of field-evolved resistance in H. armigera after several years of intensive planting of Bt cotton. Proactive tactics must be adopted to prevent further increase of resistance gene frequency in the Qiuxian region. (C) 2009 Society of Chemical Industry

  • 相关文献

[1]Resistance monitoring of Chilo suppressalis (Walker) (Lepidoptera: Crambidae) to chlorantraniliprole in eight field populations from east and central China. Lu, Yanhui,Bai, Qi,Zheng, Xusong,Lu, Zhongxian,Wang, Guorong,Zhong, Liequan,Zhang, Facheng.

[2]Resistance monitoring and assessment of resistance risk to pymetrozine in laodelphax striatellus (Hemiptera: Delphacidae). Ban, Lanfeng,Huang, Ziyang,Peng, Yongqiang,Gao, Congfen,Zhang, Shuai,He, Yueping.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：浙江省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台