绿盲蝽在转Bt基因抗虫棉的发生动态及其为害研究

Study on population dynamics and damage of Lygus lucorum Mayr in transgenic Bt cotton

摘要: 试验研究转Bt基因抗虫棉对非目标害虫绿盲蝽田间种群的影响结果表明，绿盲蝽在转单价抗虫棉(GK-12)与其亲本上的种群数量整个发生期无显著差异，但二代绿盲蝽对“GK-12”的危害程度大于对其亲本的危害，而对双价抗虫棉(SGK321)与其亲本的种群发生数量及其受害程度均无显著差异，“GK-12”比“SGK321”被害指数高1．27倍。绿盲蝽在单价抗虫棉“GK-12”上的发生为害有加重趋势，而在双价抗虫棉“SGK321”上的发生程度却受到一定抑制。

Abstract: Population dynamics and damage of green leaf bug，Lygus lucorum Mayr，on transgenic Bt cotton are studied in this paper．The results show that the bug num ber on GK-12 is not significantly different from that on its parent，but its degree of leaves damaged by the second generation of green leaf bug is much higher．There are no differences between SGK32 1 and its parent，when the number of green lea f bug and the degree of damaged leaves are compared．The damage index of total leaves on GK-12 is 1．27 times higher than that on SGK32 1．Thus，the damage of green leaf bug to transgenic Bt cotton，GK-12，is upward，while the population and damage on SGK32 1 are controlled in some extent．