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棉铃虫Heliothis armigera Hb.属鳞翅目夜蛾科,是世界性大害虫。我国棉区每年都受其害,但南方棉区受害比北方棉区轻。然而,若遇大发生年(如我省1968、71、72、78年等)则暴发成灾,产量损失远超过棉红铃虫。由于长期单一地依赖化学农药,对棉铃虫防治不甚理想,故近年来不少研究者着手抗虫育种的研究。本文报道了11种不同棉花品种上饲养的棉铃虫幼虫,对其头宽值和蛹重的影响,经LSR统计分析,表明差异是存在的,从而为抗性鉴定提供了依据。
Helicoverpa armigera Heliothis armigera Hb. Is a Lepidoptera Noctuidae, is a worldwide pest. Our cotton area is harmed every year, but the southern cotton area is harder than the northern cotton area. However, in the event of a major occurrence (such as 1968, 71, 72, 78, etc. in our province), the outbreak of disastrous losses far outweigh the production of cotton bollworm. Due to long-term reliance on chemical pesticides alone, the control of cotton bollworm is not ideal, so in recent years, many researchers embarked on insect breeding research. In this paper, the effects of cotton bollworm larvae fed on 11 different cotton varieties on their head width and pupa weight were analyzed. The LSR statistical analysis indicated that the differences existed, which provided a basis for the identification of resistance.