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首页> 外文期刊>African Entomology >Effect of neem derivatives on spotted bollworm Earias sp. (Lepidoptera: Noctuidae) and its egg parasitoid, Trichogramma chilonis (Ishi) (Hymenoptera: Trichogrammatidae).
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Effect of neem derivatives on spotted bollworm Earias sp. (Lepidoptera: Noctuidae) and its egg parasitoid, Trichogramma chilonis (Ishi) (Hymenoptera: Trichogrammatidae).

机译：印em衍生物对发现的棉铃虫Earias sp。的影响。 （鳞翅目：夜蛾科）及其卵寄生性寄生虫，Trichogramma chilonis（Ishi）（膜翅目：Trichogrammatidae）。

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Laboratory studies were conducted to investigate the toxic, growth-inhibiting and antifeedant/deterrent effects of neem derivatives on spotted bollworm and its effects on the parasitism potential and adult emergence of Trichogramma chilonis. Neem oil at 1, 1.5 and 2% and neem seed water extract at 3% concentrations not only significantly killed more spotted bollworm larvae but also reduced the number of surviving larvae that pupated. However, neem oil and neem seed water extract at 1% did not affect adult emergence in the tested insect. Neem oil at 1.5 and 2% and neem seed water extract at 3% significantly reduced the number of larvae on treated leaves. Percentage parasitism of bollworm eggs by T. chilonis was significantly reduced when they were placed on leaves treated with 2% neem oil, Polytrin-CReg. (40% profenofos + 4% Cypermethrin) and 3% neem seed water extract, but adult emergence of T. chilonis was not affected by any of the neem treatments. Similarly, the F1 progeny parasitized the bollworm untreated eggs normally and the emergence of F2 progeny was not affected by neem treatments. However, Polytrin-CReg. significantly reduced parasitism of the bollworm eggs by T. chilonis and adult emergence of the parasitoid.
机译：进行了实验室研究，以研究印em衍生物对斑点棉铃虫的毒性，抑制生长和拒食/威慑作用，以及对棉铃虫的寄生潜能和成虫的影响。 1、1.5和2％的印em油和3％浓度的印em种子水提取物不仅可以杀死更多的斑点棉铃虫幼虫，还可以减少化up的存活幼虫的数量。但是，印em油和印em种子水提取物的含量为1％时，不会影响被测昆虫的成虫出苗。印em油分别为1.5％和2％，印ne种子水提取物为3％，可显着减少处理过的叶子上的幼虫数量。将棉铃虫卵放在用2％印em油，Polytrin-CReg处理过的叶子上时，棉铃虫的寄生虫百分率大大降低。 （40％的Profenofos + 4％的氯氰菊酯）和3％的印em种子水提取物，但是任何印em处理都不会影响成人的T. chilonis出现。同样，F 1 后代正常寄生未处理的棉铃虫卵，F 2 后代的出现不受印em处理的影响。但是，Polytrin-CReg。 T. chilonis显着减少了棉铃虫卵的寄生虫和寄生虫的成虫出现。

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