ÃÞ »¨ ѧ ±¨       Cotton Science     2009£¬21(3)£º255- ·âÈý

 

 

Fitness of Tetranychus cinnabarinus Feeding on Bt Transgenic Cotton Leaves
HUANG Min-song1£¬QIU Xiao-hong1£¬2*£¬WAN Peng1£¬RONG Xiu-lan2£¬WU Jin-ping1
(1.Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences,Wuhan 430064£¬China; 2.Huazhong Agricultural University, Wuhan 430070, China)

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.
Key words£ºtransgenic cotton£»Tetranychus cinnabarinus£»life parameter     [Full Text, 1198KB]