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棉铃虫Helicoverpa armigera(Hübner)是Bt玉米的重要靶标害虫之一。规避行为可以减少害虫与Bt玉米的接触而降低生理抗性选择压力。通过比较棉铃虫对Bt玉米与常规玉米的行为反应评估棉铃虫对Bt玉米的行为规避能力,产卵选择结果显示,棉铃虫成虫在Bt玉米上的落卵量显著低于常规玉米;无选择条件下,仍然出现Bt玉米上的落卵量显著低于常规玉米的现象。幼虫实验结果显示,棉铃虫初孵幼虫在Bt玉米植株上的居留时间显著短于在常规玉米上的居留时间。研究结果证明,棉铃虫对Bt玉米具有一定的行为规避能力。
Helicoverpa armigera (Hübner) is one of the major target pests of Bt corn. Avoidance of behavior can reduce pest insects and Bt corn and reduce physiological resistance selection pressure. By comparing the behavioral responses of cotton bollworm to Bt corn and Bt corn, the oviposition preference of cotton bollworm on Bt corn was significantly lower than that of conventional maize. No selection conditions , The amount of egg drop on Bt maize still appears to be significantly lower than that of conventional maize. The results of larvae showed that the larvae of H. armigera larvae had significantly shorter residence time on Bt maize plants than those on conventional maize plants. The results show that the cotton bollworm has certain behavioral evasion ability to Bt corn.