The resistant strain of peach-potato aphid, Myzus persicae (Sulzer) to imidacloprid was continuously selected by leaf-dip bioassay in the laboratory.

• 采用浸渍法；在室内用吡虫啉对桃蚜敏感种群进行抗性选育；经过15代的连续汰选；获得抗性指数为14.；34倍的抗吡虫啉桃蚜种群。