【摘要】 在实验室条件下用一定的光温处理,成功地诱导了棉蚜性蚜(性雌蚜和雄蚜)的产生,并使其成功交配、产卵。结果表明:(1)棉蚜性蚜产生的条件一般为≤18℃,8～12h光照。而当温度22℃时,任何光照条件下均不产生性蚜。在温度14～18℃下,光周期越短,性蚜产生的效率越高;14℃下,处理代数增加,性蚜诱导效率明显增加。(2)不同的光温处理,诱导棉蚜性蚜产生的效率不同,雄蚜诱导效率最高(13.2％)的诱导条件为18℃～10L(18℃,10h光照)处理1代,性雌蚜诱导效率较高(86.7％)的诱导条件为18℃—8L处理1代。(3)在18℃—10L条件下,处理代数增加,性蚜产生的日龄可提前。性蚜人工诱导的实现对进行棉蚜生活史和种群遗传研究具有重要意义。更多还原

【Abstract】 Indoor treatments of certain temperature and photoperiod combinations had successfully induced the production, copulation and oviposition of sexuales (male and oviparous female) of cotton aphid Aphis gossypii Glover: 1. The general conditions for producing its sexuales were 18℃ of temperature combined with 8-12 hours of light per day. As the temperature was up to 22 ℃ all the illumination treatements could not induce the production of sexuales. While under 14 -18℃, the shorter the photoperiod, the higher the production ratio of sexuales. Under 141, the inducement efficiency of sexuales increased with the number of treated generations. 2. The inducement efficiencies were varied under different combined light and temperature conditions, the highest ratio ( 13.2% ) of male was induced by 18℃ and ten hours of light for one generation, and the desirable ratio of oviparous female (86.7%) was induced by 18 ℃ and 8 hours of light for one generation. 3. Under 18℃ and 10 hours of light conditions, the occurrence time of sexuales could be advanced by increasing the number of treated generations. Consequently, the success of artificial inducement for cotton aphid sexuales is very beneficial to the studies on life history and population genetics of Aphis gossypii.更多还原