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期 刊 ：植物保护学报 2007年

关键词：B型烟粉虱；抗药性；治理策略；新疆；

Keywords:Bemisia tabaci B biotype, resistance, management strategy, Xinjiang,

摘 要 ：应用浸叶法研究了新疆B型烟粉虱对4类不同作用机制杀虫剂的抗药性。结果表明,被测种群对氯氰菊酯和联苯菊酯的抗性指数分别为2100~6200和1000~2200,属于高抗性;对氯化烟酰类杀虫剂产生了低至中等抗性,对吡虫啉的抗性指数为4~86,且抗性指数呈上升趋势,对噻虫嗪的抗性指数为10~22,对啶虫脒的敏感性最佳;对昆虫生长调节剂吡丙醚的抗性指数为22~54;对阿维菌素仍然表现敏感。由此认为,拟除虫菊酯类杀虫剂在新疆已不再适用于烟粉虱的防治,而对受抗药性影响较小的氯化烟酰类杀虫剂(如吡虫啉、噻虫嗪和啶虫脒)、昆虫生长调节剂吡丙醚以及阿维菌素等新型杀虫剂,仍然可以限制性地在不同化合物间交替使用。

Abstract:The paper reports on the resistance status of samples of Bemisia tabaci (B biotype) collected from Xinjiang to four different groups of insecticides by the methods of leaf-dipping and egg laid leaf-dipping. The populations examined exhibited strong resistance to pyrethroids with resistance factors ranging from 2100 to 6200-fold to cypermethrin and from 1000 to 2200-fold to bifenthrin, respectively. The resistance factors to imidacloprid ranged from 4 to 86-fold, and increased significantly in samples collected late in the growing season of 2005. The resistance factors to thiamethoxam ranged from 10 to 22-fold, and cross resistance has been found between neonicotinoids with acetamiprid being least affected. The resistance factors to pyriproxyfen ranged from 22 to 54-fold, and all tested populations were still fully susceptible to abamectin. Pyrethroids therefore appear to offer little prospect for whitefly control in Xinjiang. However some newer compounds such as the neonicotinoids (e.g. imidacloprid, thiamethoxam and acetamiprid), pyriproxyfen and abamectin could still be incorporated into resistance management strategies but need to be used in strict moderation and in alternation with unrelated molecules.

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