Evidence of field‐evolved resistance to Cry1Ac‐expressing Bt cotton in Helicoverpa armigera (Lepidoptera: Noctuidae) in northern China
Pest Management Science2009Vol. 66(2), pp. 155–161
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Fengyi Liu, Zhiping Xu, Yu Cheng Zhu, Fangneng Huang, Yanhua Wang, Huiling Li, Hua Li, Cong‐Fen Gao, Weijun Zhou, Jinliang Shen
Abstract
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.
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