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报道了非洲山毛豆 (TephrosiavogeliiHook)丙酮提取物对菜青虫 (PierisrapaeL .)、斜纹夜蛾 (SpodopteralituraFabricius)、粘虫 (MythimnaseparataWalker)、小菜蛾 (PlutellaxylostellaL .)等害虫的拒食作用 选择性拒食作用中 ,非洲山毛豆叶丙酮提取物以植物干粉 0 2g/mL处理时 ,对 5龄菜青虫的拒食率为 87 3 % ,与 10 0 0mg/L川楝素达到同一水平 对 5龄斜纹夜蛾和粘虫的拒食率分别为 6 5 8%和 10 0 % ,粘虫对提取物的反应更敏感 ,以植物干粉0 0 0 5g/mL处理时 ,拒食率仍达到 6 0 5 % 非选择性拒食作用中 ,非洲山毛豆叶丙酮提取物植物干粉 0 0 1g/mL处理时 ,对 5龄菜青虫 48h的拒食率高达 94 2 % ;植物干粉 0 1g/mL处理时 ,对 4龄小菜蛾的拒食率为 10 0 % ,显示出强烈的拒食作用
This paper reports the selective antifeedant effect of Acetone extract of Tephrosia villi Hook on the antifeeding effect of pests such as Pieris rapae L., Spodopteralitura Fabius, Mythimna pearata Walker and Plutella xylostella L. Africa, The phytoextraction rate of the 5th instar larvae was 87 3% when treated with 0 2 g / mL dry powder of Phyllostachys pubescens leaves, and reached the same level as that of the 10 0 0 mg / L toosendanin Were 65.8% and 100% respectively, while the armyworms were more sensitive to the extract. When the plant dry powder was treated with 0 0 0 5 g / mL, the antifeedant rate still reached to 650% of the non-selective antifeedant effect , The antifeedant rate of African pea leaves acetone extract plant powder at 0 0 1g / mL was up to 94 2% at 48h after 5-instar larvae, while at 0 1g / mL, 10 0%, showing a strong antifeedant effect