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寄主植物对朱砂叶螨药剂敏感性及解毒酶活性的短期诱导研究
Shortterm induction effects of different host plants on the insecticide susceptibilities and detoxification enzymes of
戴宇婷,张友军,吴青君,谢文,王少丽
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DOI:
作者单位:中国农业科学院蔬菜花卉研究所北京100081
中文关键词:朱砂叶螨,寄主植物,药剂敏感性,解毒酶活性
英文关键词:Tetranychus cinnabarinus, host plant, insecticide susceptibility, detoxification activities
中文摘要:

将继代饲养在菜豆上的朱砂叶螨Tetranychus cinnabarinus(Boisduval)分别转移到黄瓜、甘蓝和茄子上饲养3代后,测定不同寄主植物对叶

螨的药剂敏感性及其解毒酶系活性的诱导作用。结果表明,从菜豆上转养到黄瓜、甘蓝和茄子上后,后3个寄主上叶螨种群对阿维菌素的敏感

度均有所上升,对联苯菊酯的敏感度有升有降,甘蓝、茄子上的叶螨种群LC50值分别是菜豆种群的027倍和044倍。各寄主上饲养的朱砂叶

螨的解毒酶活性也发生了不同程度的变异,黄瓜种群上MFO、CarE活性均显著高于其它3种寄主,菜豆种群的GST活性显著高于转养的3种寄主,

而甘蓝种群的AchE活性是菜豆种群的337倍。研究结果表明不同寄主植物短期饲养可改变朱砂叶螨的药剂敏感性及其解毒酶活性,这种改变

随寄主不同而异。

英文摘要:

Induction effects of different host plants on the insecticide susceptibilities and detoxification enzymes of the spider

mite, Tetranychus cinnabarinus (Boisduval)were measured in mites that had been reared on beans, cucumbers, cabbages, and

eggplants for 3 generations. The founders of each mite population had been obtained from bean plants. Mites fed on cucumber,

cabbage, and eggplant displayed increased susceptibility to abamectin, whereas susceptibility to bifenthrin was more

variable. The LC50 values of mites on cabbage and eggplant were, respectively, 0.27 times and 0.44 times that of those on

beans. The activities of mites’ detoxification enzymes differed on different host plants. The activities of MFO and CarE in

mites on cucumbers were significantly higher than in those on the other 3 host plants and GST activity of mites on beans was

significantly higher than in those on other plants. The AchE activity of T. cinnabarinus on cabbage was 3.37 times higher

than that of those on beans. These results show that shortterm rearing of T. cinnabarinus on different vegetable crops can

induce different insecticide susceptibilities and detoxifying enzyme activity.


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