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首页> 外文期刊>Environmental Science and Pollution Research >Solanum xanthocarpum Sch &Wendle against Helicoverpa armigera (Hub.), Culex quinquefasciatus (Say.) and Eisenia fetida (Savigny, 1826)]]>
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Solanum xanthocarpum Sch &Wendle against Helicoverpa armigera (Hub.), Culex quinquefasciatus (Say.) and Eisenia fetida (Savigny, 1826)]]>

机译：<！[CDATA [<重点类型=“斜体”>茄子Xanthocarpum Sch＆amp; incenge抵御<重点类型=“斜体”> Helicoverpa Armigera （集线器），<重点类型= “斜体”> Culex Quinquefasciatus （例如）和<重点类型=“斜体”>艾西尼亚·菲特纳（Savigny，1826）]]>

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Abstract Many commercially available agro and household chemicals are used as pesticides, repellents, and growth inhibitors against insect pests. The repeated uses of these chemicals against insect pests have caused the development of resistance in them; they also cause ill effects on nontarget organisms. The present study was aimed to evaluate the antifeedant, larvicidal, pupicidal, and biochemical effects of the solvent extracts of Solanum xanthocarpum against third instar larvae of Helicoverpa armigera . Hexane, chloroform and ethyl acetate extracts were subjected to phytochemical analysis. The results revealed the presence of terpenoids, flavonoid, and quinone. Maximum antifeedant activity of 72.30% was recorded in chloroform extract followed by hexane (69.02%) and ethyl acetate (57.40%) extracts against H. armigera . Chloroform extracts of S. xanthocarpum showed more than 60% larvicidal and pupicidal activity against H. armigera . The effective chloroform extract was fractionated with increasing polarity of solvent system (hexane, chloroform, and ethyl acetate extracts). Based on the TLC profile, nine major fractions were isolated. The fourth fraction showed higher antifeedant, larvicidal, and pupicidal activity against H. armigera . The effective fraction reduced the hemolymph and gut protein concentration in a concentration-dependent manner ( r _(2)0.99). The effective fraction 4 showed 100% larvicidal activity at 500?ppm concentration with LC~(50)value of 227.95?ppm. The fourth fraction did not show any toxic symptom or mortality of earthworm. Based on these results, this effective fraction could be used in the development of a pesticide formulation to control insect.
机译：摘要许多商业农业和家用化学品用作杀虫剂，驱虫剂和对害虫的生长抑制剂。这些化学品对害虫的反复用途导致它们的抗性;它们也对Nontarget生物产生了效果。本研究旨在评估茄子Xanthocarpum的溶剂提取物对Helicoverpa armigera的第三龄幼虫的抗冻剂，幼稚癌，杀菌剂和生物化学作用。对己烷，氯仿和乙酸乙酯提取物进行植物化学分析。结果表明存在萜类化合物，黄酮类化合物和醌。在氯仿提取物中记录72.30％的最大抗透镜活性，然后记录己烷（69.02％）和乙酸乙酯（57.40％）抗乙酸乙酯（57.40％）。 S. Xanthocarpum的氯仿提取物显示出超过60％的幼虫和杀虫活性对抗H. Armigera。将有效的氯仿提取物分分离，随着溶剂系统（己烷，氯仿和乙酸乙酯提取物）的增加。基于TLC型材，分离九个主要级分。第四个部分显示出较高的抗透液，幼虫和对甲骨蛋白的杀螨剂活性。有效馏分以浓度依赖性方式降低血淋巴和肠道蛋白浓度（R _（2）0.99）。有效馏分4显示500μlPPM浓度的100％幼稚活性，LC〜（50）值为227.95μm≤PPM。第四部分没有显示出蚯蚓的任何有毒症状或死亡率。基于这些结果，该有效级分可用于开发农药配方以控制昆虫。

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