棉 花 学 报     Cotton Science    2009，21(1)：67-69

Partial Life Tables of Helicoverpa armigera in Transgenic Insect-resistant Cotton Fields
GUO Jian-ying¹, HE Hua¹, WAN Fang-hao¹, ZHANG Gui-fen¹, HAN Zhao-jun²
(1.Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China; 2. Department of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China)

Abstract：By cage experiments, partial life tables of the second generation of Helicoverpa armigera (CBW) in transgenic cotton fields (cvs. SGK 321 and GK 12) were established to evaluate key factors affecting their populations. It showed Bt protein expression in cotton plant was the key factor affecting population dynamics of CBW in GK 12 and SGK 321. Predation ranked the second, and predation efficacy in both transgenic cotton fields had no significant difference to that in their correspongding parental cotton fields.
Key words：transgenic insect-resistant cotton; Helicoverpa armigera ; life table
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