| 野西瓜苗提取物对小菜蛾活性的作用方式 |
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| 引用本文： | 左玲霞,杨敏丽,谢晓鹏. 野西瓜苗提取物对小菜蛾活性的作用方式[J]. 湖北农业科学, 2008, 47(12) |
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| 作者姓名： | 左玲霞 杨敏丽 谢晓鹏 |
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| 作者单位： | 银川大学石油化工学院,银川,750105;宁夏大学能源化工重点实验室,银川,750021;宁夏育才中学,银川,756500 |
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| 基金项目： | 国家自然科学基金资助项目(20565003); 宁夏自然科学基金资助项目(NZ0719) |
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| 摘 要： | 研究了野西瓜苗乙醇提取物对小菜蛾的触杀、拒食和抑制生长的作用。结果表明，野西瓜苗乙醇提取物对小菜蛾3龄幼虫具有较高的触杀和拒食活性．浸渍法处理对小菜蛾3龄幼虫72h的致死中浓度（LC5D）为3．2g·L^-1，24h、48h的拒食中浓度（AFC50）分别为8．6060、2．8495g·L^-1；乙醇提取物对小菜蛾的生长发育也有一定抑制作用，处理剂量50．00g·L^-1’时，抑制生长率大于100％，化蛹率为24．34％，羽化卒为9.28％。
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| 关 键 词： | 野西瓜苗 小菜蛾 活性作用方式 |
Study on Action Mode of Hibiscus trionum L against Plutella xylostella |
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| ZUO Ling-xia,YANG Min-li,XIE Xiao-Peng. Study on Action Mode of Hibiscus trionum L against Plutella xylostella[J]. Hubei Agricultural Sciences, 2008, 47(12) |
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| Authors: | ZUO Ling-xia YANG Min-li XIE Xiao-Peng |
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| Abstract: | Contacting,antifeeding and inhibition of the extracts from Hibiscus trionum L on 3th instar larvae of Plutella xy-lostella were determined.The results showed that ethanol extract possessed high contacting and antifeeding effect against 3th instar larvae of Plutella xylostella.The LC50 of contacting action was 0.003 2 g.mL-1 by dipping method and the AFC50 of complete antifeeding activity were 8.606 0 and 3.361 2 g.L-1 in 24,48 h,respectively.Ethanol extracts also displayed strong effect on the growth and de... |
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| Keywords: | Hibiscus trionum L Plutella xylostella action mode |
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