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紫外辐射对蚜虫产生了强烈的选择压力,可导致蚜虫种下遗传分化,而紫外辐射对蚜虫种下体色分化的影响尚不清楚.本研究选定两种不同体色型的麦长管蚜初生若蚜经过30W紫外线(UVB波)照射5d,每天30min,在不同温度(15℃、20℃和25℃)和不同小麦品种(小偃-22、Astron)条件下,通过在人工智能控制温室内单头饲养,分别测定了各处理麦长管蚜的发育历期、体质量差及相对日均体质量增长率等生物学参数.结果表明:在品种小偃-22上,温度较低时,紫外辐射显著延缓了绿色型麦长管蚜生长,而温度较高时,紫外辐射显著延缓了红色型麦长管蚜生长;在品种Astron上,温度较低时,紫外辐射显著延缓了绿色型麦长管蚜生长,而温度较高时,紫外辐射对两种体色型麦长管蚜生长均无显著影响.说明两种体色型蚜虫对紫外胁迫的反应不同,且紫外胁迫对麦长管蚜的影响与温度和小麦品种有关.
UV radiation has a strong selection pressure on aphids, which can lead to the genetic differentiation of aphids, but the effect of UV radiation on the color differentiation of aphids is not clear.In this study, two different body color Aphis gossypii If the aphids were exposed to 30 W ultraviolet light (UVB wave) for 5 days and 30 minutes per day, the aphids were exposed to different temperature (15 ℃, 20 ℃ and 25 ℃) and different wheat varieties (Xiaoyan-22, Astron) The results showed that on the variety Xiaoyan-22, when the temperature was low, the growth and development of aphids, UV radiation significantly slowed the growth of the green wheat Aphis gossypii, but at a higher temperature, UV radiation delayed the growth of the red wheat Aphis gossypii. UV radiation delayed the growth of green wheat aphid However, at higher temperatures, UV radiation had no significant effect on the growth of the two species of B. gigantica, indicating that the responses of two species of body color aphids to UV were different, The effects of aphids are related to temperature and wheat variety.