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:转Bt基因抗虫棉对棉铃虫有很好的抗性,对棉大卷叶螟(SyleptaderogataFabricius)的抗性未见报道。作者研究表明,棉大卷叶螟在棉田为聚集分布型,低龄幼虫有集中为害习性;抗虫棉对其有很好的抗性,平均虫株率为2.2%,较常规棉中棉所12降低96.6%;百株虫量为133.8头,较常规棉降低88.4%。
: Transgenic Bt cotton has good resistance to cotton bollworm and no resistance to Syleptaderogata Fabricius has been reported. The study shows that the cotton leaf roller is aggregated distribution in the cotton field, young larvae have concentrated habit of damage; insect resistant cotton has a good resistance to them, the average worm strain rate of 2.2%, compared with conventional cotton cotton 12 Decreased by 96.6%. The number of one hundred insects was 133.8, which was 88.4% lower than that of conventional cotton.