两种寄主植物对烟夜蛾滞育蛹耐寒性影响  

Effect of Two Host Plants on the Cold Tolerance of the Diapause Pupae of Helicoverpa assulta

作　　者：高玉红[1] 张艳丽[1] 赵卫星[2] 

机构地区：[1]郑州职业技术学院,河南郑州450121 [2]河南省农业科学院园艺研究所,河南郑州450002

出　　处：《北方园艺》2014年第12期103-106,共4页Northern Horticulture

基　　金：郑州市重大科技攻关资助项目(082ZGBN18053)

摘　　要：对烟叶和辣椒饲养的烟夜蛾滞育蛹过冷却点、结冰点和低温存活率进行了比较,以探究不同寄主对烟叶蛾滞育蛹耐寒性的影响。结果表明:2日龄时,2种寄主植物饲育下滞育蛹的过冷却点和结冰点差异不显著;5日龄和9日龄时2种寄主植物饲育的滞育蛹的过冷却点和结冰点,除5日龄的雄蛹的结冰点差异不显著外,其它均达显著水平;低温条件下,不同的处理时间滞育蛹存活率变化幅度较大,处理10d和20d,2种寄主植物饲育下滞育蛹存活率差异不显著;处理60d,无论何种寄主、土壤深度以及雌雄蛹,滞育蛹基本上全部死亡;处理30、40、50d,用烟叶饲育的滞育蛹存活率显著高于辣椒,且雌蛹的存活率略高于雄蛹;从耐寒性来考虑,烟叶是较为理想的寄主植物。The effect of tobacco and pepper on the cold tolerance of the diapause pupae of Helicoverpa assulta were analyzed, by comparing supercoolin4% and freezing point and survival rate of the diapause pupae between tobacco and pepper reared Helicoverpa assulta. The results showed that in the stage of 2-day-old pupae,supercooling and freezing point of the diapause pupae of Helicoverpa assulta had no difference between two host plants,in the stage of 5-day-old pupae and 9-day-old pupae, except freezing point of 5-day-old male pupae had no different,others all reached significant difference. Survival rates of diapause pupae changed greatly under the condition of low temperature at different treatment time. There was no difference of diapause pupae survival rate between two diets with 10 days and 20 days. Treatment for 60 days,regardless of the host,soil depth,male and female pupaldiapause pupae, basically all died. But with 30,40,50 days, the survival rate of diapause pupae with tobacco was significantly higher than pepper plant diet. That of female diapause pupae was higher than one of male diapause pupae. From cold tolerance point of view,tobacco was more inaptitude host plant.

关 键 词：烟夜蛾 寄主植物 过冷却点 滞育蛹 耐寒性 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]