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首页> 外文期刊>Phytoparasitica >Antifeedant activity of a novel 6-(4,7-hydroxy-heptyl) quinone(A (R)) from the leaves of the milkweed Pergularia daemia on the cotton bollworm Helicoverpa armigera (Hub.) and the tobacco armyworm Spodoptera litura (Fab.)
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Antifeedant activity of a novel 6-(4,7-hydroxy-heptyl) quinone(A (R)) from the leaves of the milkweed Pergularia daemia on the cotton bollworm Helicoverpa armigera (Hub.) and the tobacco armyworm Spodoptera litura (Fab.)

机译：乳草Pergularia daemia叶片上的新型6-（4,7-羟基庚基）醌（A（R））对棉铃虫Helicoverpa armigera（Hub。）和烟草夜蛾Spodoptera litura（Fab。 ）

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摘要

The effects of crude extracts and an isolated compound from the leaves of milkweed, Pergularia daemia (Forssk) Choiv., on the antifeedant activity against two important lepidopteran pests, Helicoverpa armigera (Hub.) and Spodoptera litura (F.), were studied. Maximum antifeedant activity was recorded in ethyl acetate crude extract against H. armigera (70.3%) and S. litura (71.82%) at 1% concentration. Ethyl acetate crude extract was further subjected to column chromatography, which was performed using hexane as initial solvent and then by increasing the polar strength using ethyl acetate. Fractions collected at hexane and ethyl acetate (80:20) yielded 6-(4,7-hydroxy-heptyl) quinone, a novel compound which showed significant antifeedant activity against H. armigera (80.22% at 2000 ppm) and S. litura (68.31% at 2000 ppm).
机译：研究了马利筋草（Pergularia daemia，Forssk Choiv。）的粗提物和分离的化合物对两种重要鳞翅目害虫（Helicoverpa armigera（Hub。）和斜纹夜蛾（Spodoptera litura）（F.））的拒食活性的影响。在1％浓度的乙酸乙酯粗提物中，棉铃虫（70.3％）和斜纹夜蛾（71.82％）的最大拒食活性记录。进一步对乙酸乙酯粗提物进行柱色谱，该柱色谱使用己烷作为初始溶剂，然后通过使用乙酸乙酯提高极性强度来进行。在己烷和乙酸乙酯（80:20）上收集的馏分产生6-（4,7-羟基庚基）醌，这是一种新型化合物，对棉铃虫（2000 ppm时为80.22％）和斜纹夜蛾（S. litura（在2000 ppm时为68.31％）。

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