Growth Inhibitory Activity of Annona squamosa against Polyphagous Pest Spodoptera litura (F)
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Abstract
The present study was conducted to evaluate the insect growth inhibitory effect of seed extract of the medicinal plant, Annona squamosa L. against Spodoptera litura F., under laboratory conditions. The four solvent seed extracts of A. squamosa namely, methanol, ethyl acetate, hexane and chloroform at 0.5, 1, 1.5, 2 and 2.5% concentrations were tested against third instar larvae of S. litura. The results showed that, among the four solvent extracts, methanol solvent extracts of A. squamosa at 2% and 2.5% concentration was found to be effective. It has been observed that methanol extract at 2.5% resulted in 97.5% mortality with no malformations in the developmental stages. The result indicated that the response of larval mortality and deformities in the developmental stages was dose dependent.黄花葵对多食性害虫 Spodoptera litura（F）的生长抑制活性
本研究旨在实验室条件下评估药用植物鹅掌楸（Annona squamosa L.）种子萃取物对斑翅虫（Spodoptera litura F.）的昆虫生长抑制作用。研究人员分别用浓度为 0.5%、1%、1.5%、2% 和 2.5% 的四种药用植物种子提取物（甲醇、乙酸乙酯、正己烷和氯仿）对鞘翅目鳞翅目幼虫的三龄幼虫进行了测试。结果表明，在四种溶剂萃取物中，浓度为 2% 和 2.5% 的鳞栉水母甲醇溶剂萃取物有效。据观察，2.5% 的甲醇提取物可导致 97.5% 的死亡率，且在发育阶段不会出现畸形。结果表明，幼虫死亡率和发育阶段的畸形率与剂量有关。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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