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首页> 外文会议>International Conference on Medical Engineering and Bioinformatics >Bioactivities of extracts from Pedicularis Spicata on Plutella Xylostella
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Bioactivities of extracts from Pedicularis Spicata on Plutella Xylostella

机译：Prutella Xylostella的Pedicularis Spicata提取物的生物活性

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Insecticidal, antifeedant, and larval development effects of polar-varying extracts from Pedicularis spicata on Plutella xylostella were investigated. Insecticidal activity was tested by dipping method and the sequences of contact toxicity was petroleum ester extract>chloroform extract>ethyl acetate extract with the mortalities of 100%, 93.10%, and 22.30%. In no-choice antifeedant test, the three extracts displayed strong antifeedant effects, the 48 h rates of deterring the continuation of feeding reached 69.91%, 72.73%, and 49.35%, respectively. Attributed to the antifeedant action, the development of the larvae of Plutella xylostella was also inhibited, the growth inhibition rates of the three extracts on the larvae were 74.23%, 72.68%, and 55.67%, respectively, pupation rates were reduced to 53.3%, 57.8%, and 73.33%, meanwhile, the adult emerging rates were reduced to 40.0%, 33.3%, and 32.22% compared to the control of 85.56% of pupation rate and 82.22% of adult emerging rate. The results from this study indicate that the extracts, especially the weak-polar extracts display various activities on Plutella Xylostella, which can be used as new natural pesticides for pest control.
机译：研究了杀虫，抗透过提取物来自Propecularis Spicata on Prutella Xalostella的杀虫剂，抗细胞和幼虫发育效果。通过浸渍方法测试杀虫活性，接触毒性序列是石油酯提取物>氯仿提取物>乙酸乙酯提取物，死亡率为100％，93.10％和22.30％。在无选择抗细型试验中，三种提取物显示出强烈的抗透镜效应，48小时的速率促使饲养的延续达到69.91％，72.73％和49.35％。归因于抗透过抗细乳蛋白的抗冻动作，也抑制了Plutella Xylostella的幼虫，幼虫三种提取物的生长抑制率分别为74.23％，72.68％和55.67％，蛹率降至53.3％，同时，57.8％，73.33％，成年人新兴率降至40.0％，33.3％和32.22％，与蛹率的85.56％和82.22％的成年新兴率的控制相比。本研究的结果表明提取物，尤其是弱极性提取物在Plutella Xylostella展示各种活性，这可以用作新的天然农药用于害虫控制。

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