ÃÞ »¨ ѧ ±¨ Cotton Science 2009£¬21(3)£º255- ·âÈý
Fitness of Tetranychus cinnabarinus Feeding on Bt Transgenic Cotton Leaves Abstract£ºLife parameters of Tetranychus cinnabarinus on Bt transgenic cotton was studied by leaf feeding bioassay. No significant differences were obsevered in net reproductive rate, intrinsic growth rate, finite increase rate and other parameters between population feeding on Bt cotton leaves and that feeding on conventional cotton leaves. These indicated that there were no negative or positive impacts of Bt transgenic cotton on survival and reproduction of Tetranychus cinnabarinus in short term. Therefore, the relatively large population density of T.cinnabarinus in Bt cotton fields might be caused by reducing of pesticide usage and ineffective controlling by the nature enemies.
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