【摘要】 研究了不同剂量辐照对棉铃虫雄虫生理状态和繁殖能力的影响。结果表明,当辐照剂量从0Gy增加到400Gy时,棉铃虫飞行能力随着剂量的增加而减弱:最大飞行距离从69.65km降低到38.30km;平均飞行距离从44.19km降低到13.55km。辐照处理的棉铃虫寿命明显低于未处理棉铃虫的寿命(P<0.05),但不同剂量辐照处理间棉铃虫寿命差异不显著。受精卵的孵化率受辐照剂量的影响显著,但每雌产卵量、受精卵数对辐照剂量的增加反应不显著。田间纱笼释放试验表明,在200Gy剂量下的辐照虫与野生虫的释放比为5:1时,可有效控制棉铃虫。更多还原

【Abstract】 The effects of γ-rays irradiation on the mating ability and flight capability of male cotton bollworm Helicoverpa armigera were studied in laboratory and field cages.The results showed that when the irradiation dose increased from 0Gy to 400Gy,the flight capability decreased: flight distance decreased from 69.65km to 38.30km;average flight distance decreased from 44.19km to 13.55km.The longevity of the irradiated males was significantly shorter than that of the wilds but there was no significant difference according to different doses. Egg hatchability was affected significantly by irradiation but there was no significant difference in eggs laid per female,fecundation eggs as increasing treated doses.When the ratio of sterilized males(treated dose 200Gy) to fertile males was as 5:1 in field cages,the F1 hatchability was significantly decreased and the purpose of controlling cotton bollworm population could be effectively achieved.更多还原