| 羊角扭对菜粉蝶幼虫的生物活性及药效的研究 |
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| 引用本文： | 胡美英,徐汉虹,程东美,周利娟.羊角扭对菜粉蝶幼虫的生物活性及药效的研究[J].华南农业大学学报,2000,21(1):41-43. |
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| 作者姓名： | 胡美英 徐汉虹 程东美 周利娟 |
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| 作者单位： | 华南农业大学昆虫毒理研究室,广东,广州,510642 |
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| 基金项目： | 广东省自然科学基金资助项目!（930841） |
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| 摘 要： | 羊角扭的果、叶、茎粗提物对菜粉蝶幼虫具有较好的拒食作用和毒杀作用，从羊角扭植物中分离出来的羊角扭总甙对菜粉蝶４龄幼虫的ＬＣ５０和ＬＣ５０分别为３２．０４６８ｍｇ／Ｌ和３７９．７８１ｍｇ／Ｌ，田间试验表明，ψ＝０．０５％羊角扭甙水剂开采粉蝶效果好。
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| 关 键 词： | 羊角扭 羊角扭总甙 菜粉蝶 拒食作用 药效试验 |
| 修稿时间： | 1998-12-21 |
Studies on the Effectiveness and Biological Activities of Strophanthus divaricatus Against Imported Cabbage Worm |
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| HU Mei-ying,XU Han-hong,CHENG Dong-mei,ZHOU Li-juan.Studies on the Effectiveness and Biological Activities of Strophanthus divaricatus Against Imported Cabbage Worm[J].Journal of South China Agricultural University,2000,21(1):41-43. |
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| Authors: | HU Mei-ying XU Han-hong CHENG Dong-mei ZHOU Li-juan |
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| Abstract: | s: Results of experiments in laboratory indicated that the extracts of fruits, leaves and stems from Strophanthus divaricatus possessing strong antifeedant and insecticidal properties on the 4th instar larvae of the imported cabbage worm Pieris rapae. It was found that the LC50 and LC95 of D-strophanthin isolated from Strophanthus divaricatus were 32.046 8 mg/L and 379. 718 1 mg/L respectively, against 4th instar larvae of Pieris rapae. Results in field trials showed that the good effectiveness was obtained with 0. 05% commercial products of Strophanthus divericatus against imported cabbage worm. |
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| Keywords: | Strophanthus divaricatus D-strophanthin Pieris rapae antifeedant effectiveness |
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