通过对滞育蛹过冷却点的测定 ,初步明确寄主对棉铃虫的越冬抗寒性有影响 ,采自棉花的滞育蛹过冷却点低于采自玉米的滞育蛹 ,即前者的抗寒能力高于后者 ;但用抗虫棉喂养后的棉铃虫滞育蛹抗寒能力下降 Through the determination of the subcooling point of diapause pupae, it was initially clarified that host affected the overwintering cold-resistance of cotton bollworm. The diaphanous pupae collected from cotton had lower subcooling point than the diapause pupa collected from maize, Ability higher than the latter; However, cotton bollworm fed with insect-resistant cotton diapause cold ability to decline