• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of King Saud University >Antifeedant and larvicidal activities of Acalypha fruticosa Forssk. (Euphorbiaceae) against Plutella xylostella L. (Lepidoptera: Yponomeutidae) larvae
【24h】

Antifeedant and larvicidal activities of Acalypha fruticosa Forssk. (Euphorbiaceae) against Plutella xylostella L. (Lepidoptera: Yponomeutidae) larvae

机译：金盏花 Forssk的拒食和杀幼虫活性。 （Euphorbiaceae）对小菜蛾（Plutella xylostella） L.（鳞翅目：Yponomeutidae）幼虫

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Antifeedant and larvicidal activities of hexane, chloroform and ethyl acetate extracts of Acalypha fruticosa Forssk. Leaves were studied using leaf disc no-choice method against third instar larvae of Plutella xylostella L. Chloroform extract showed maximum antifeedant activity of 92.8% at 5% concentration with a LC 50 value of 1.86%. Nine fractions were collected from the chloroform extract (30 g) by silica gel column chromatography, among which the seventh fraction (eluted by 100% ethyl acetate) recorded maximum antifeedant activity (84.3%) at 1000 ppm concentration with a LC 50 value of 385.7 ppm against the third instar larvae of P. xylostella . Preliminary phytochemical analysis of this effective fraction showed the presence of terpenoids, tannins, coumarins, anthraquinones and saponins.
机译：山金车草（Acalypha fruticosa Forssk）的己烷，氯仿和乙酸乙酯提取物的拒食和杀幼虫活性。使用叶圆盘无选择法研究了叶对小菜蛾的三龄幼虫的叶片。氯仿提取物在5％的浓度下显示最大的拒食活性为92.8％，LC 50值为1.86％。通过硅胶柱色谱从氯仿提取液（30 g）中收集了九个馏分，其中第七个馏分（用100％乙酸乙酯洗脱）在1000 ppm浓度下记录了最大的拒食活性（84.3％），LC 50值为385.7 ppm对小菜蛾的第三龄幼虫。对该有效成分的初步植物化学分析显示，存在萜类化合物，丹宁酸，香豆素，蒽醌和皂苷。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号