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为了探明不同地理种群棉铃虫Helicoverpa armigera滞育强度的地理变异,本研究系统地比较了光温条件(光照时数11～16h,恒温20,22,25,28和31℃及变温)对来自中国的4个地理种群(广东广州、江西永修、山东泰安和辽宁喀佐)棉铃虫滞育强度的影响。结果表明:滞育诱导的光周期对继后棉铃虫的滞育强度有明显影响。在光照时数11～14h范围内,各地理种群的滞育持续期均随着光照时数的增加而延长。滞育强度也受到滞育诱导的温周期影响,当光期温度相同时,低纬度的GZ种群温周期比恒温有更强的诱导效应;中纬度的YX种群温周期与恒温具有相同的滞育诱导强度;高纬度的KZ和TA种群温周期所诱导的滞育强度一般低于恒温。滞育解除过程中的温度也显著影响到滞育的解除,在20～31℃下,温度愈高滞育解除愈快;滞育持续期同时受到滞育诱导温度的影响,对于北方的泰安种群和喀佐种群,较高的滞育诱导温度能诱导更强的滞育。
In order to find out the geographical variation of diapause intensity of Helicoverpa armigera in different geographical populations, this study systematically compared the effects of light and temperature conditions (light hours 11 ~ 16h, constant temperature 20,22,25,28 and 31 ℃ and variable temperature) Effect of 4 Diameter Geographical Populations on Population Diapause of Cotton Bollworm (Guangzhou, Guangdong, Yongxiu, Taian, Shandong and Kassuo, Liaoning Province). The results showed that the diapause-induced photoperiod had a significant effect on the diapause intensity of the bollworm. Within the range of 11-14 hours of illumination, the duration of diapause of each geographic population was prolonged with the increase of illumination hours. The diapause intensity was also affected by the diapause-induced temperature cycles. When the light and light temperatures were the same, the temperature cycles at low latitudes were stronger than those at constant temperature. The mid-latitude YX populations had the same diapause Induction intensity; the diapause intensity induced by warm cycles of KZ and TA populations at high latitudes was generally lower than the constant temperature. The temperature during diapause release also significantly affected the release of diapause. The higher the temperature was, the higher the temperature was and diapause was released at 20 ~ 31 ℃. The duration of diapause was also affected by the diapause induction temperature. For the Tai’an population in the north And the Kazo population, the higher diapause induction temperature can induce stronger diapause.