| 辣蓼粗提物对菜青虫的生物活性 |
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| 引用本文： | 曾维爱,谭济才,谭琳,陈建芝. 辣蓼粗提物对菜青虫的生物活性[J]. 湖南农业大学学报(自然科学版), 2007, 33(1): 76-78 |
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| 作者姓名： | 曾维爱 谭济才 谭琳 陈建芝 |
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| 作者单位： | 湖南农业大学,茶学教育部重点实验室,湖南,长沙,410128;湖南农业大学,生物安全科技学院,湖南,长沙,410128;湖南农业大学,生物安全科技学院,湖南,长沙,410128 |
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| 基金项目： | 湖南省“十五”重大科技攻关项目(05NK1004) |
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| 摘 要： | 采用超声波辅助提取、回流提取,以95%乙醇、50%乙醇、水为溶剂从辣蓼中得到提取物.生物活性检验表明,提取物对菜青虫具有较强的拒食活性和一定的触杀作用,其中,95%乙醇回流提取物的拒食活性和触杀作用最强,24 h后拒食率为75.27%,72 h后触杀作用的校正死亡率为44.83%.
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| 关 键 词： | 辣蓼 菜青虫 生物活性 |
| 文章编号： | 1007-1032(2007)01-0076-03 |
| 修稿时间： | 2005-12-19 |
Biological activities of crude extracts from Polygonum hydropiper L. against Pieris rapae L. |
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| ZENG Wei-ai,TAN Ji-cai,TAN Lin,CHEN Jian-zhi. Biological activities of crude extracts from Polygonum hydropiper L. against Pieris rapae L.[J]. Journal of Hunan Agricultural University, 2007, 33(1): 76-78 |
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| Authors: | ZENG Wei-ai TAN Ji-cai TAN Lin CHEN Jian-zhi |
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| Abstract: | Two methods of extraction and three solvents were selected to obtain extracts from Polygonum hydropiper L..The biological activities of the two samples were tested against Pieris rapae L..The results showed that these extracts had higher antifeeding effect and contact toxity against Pieris rapae L..In these extracts,the extract with 95% ethanol as solvent had the strongest biological activities,antifeeding rate in 24 h reached 75.27%,corrected mortality in 72 h reached 44.83%. |
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| Keywords: | Polygonum hydropiper L. Pieris rapae L. bioactivity |
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