双抗虫基因三倍体毛白杨对舞毒蛾幼虫的抗性研究

用室内群体饲养舞毒蛾幼虫的方法,对15个双抗基因三倍体毛白杨株系进行饲虫试验。结果表明:校正死亡率划分了高抗、中抗、低抗虫植株,舞毒蛾校正死亡率在95以上为高抗株系;40～75为中抗株系,30以下为低抗株系。舞毒蛾的发育历期、蜕皮指数和毒效反映的规律相一致。

Study on the Lymantria dispar Linnacus Insect Resistance of the Transgectic Triploid Hybrids of Populus tomentosa Carrying Two-resistant Genes

With group feeding method in laboratory,the resistance of 15 clones of two-resistant genes triploid hybrids of Populus tomentosa on Lymantria dispar Linnacus was measured.The results showed that the tested plants were divided into third groups,high resistant,middle resistant and low resistant according to mortality,the mortality of instar larvae killed by high resistant clones was over 95,and the mortality of the larvae killed by middle resistant clones was between 40 and 75,the mortality was under 30 when feed with the low resistant clones.Analyzed and compared the developmental periods,molting calendar index and toxic effect of Lymantria dispar Linnacus feed with the three kinds of transgenic Triploid hybrids of Populus tomentosa,the results showed that the conclusion in the correction mortality was consistent with the rules reflects of development period,molting calendar index and toxic effect on Lymantria dispar Linnacus.