| 甜菜夜蛾不同龄期幼虫药剂敏感性及酶活性差异 |
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| 引用本文： | 彭梅,邓新平.甜菜夜蛾不同龄期幼虫药剂敏感性及酶活性差异[J].西南农业大学学报,2005,27(2):173-175,183. |
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| 作者姓名： | 彭梅 邓新平 |
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| 作者单位： | 西南农业大学植物保护学院，重庆400716 |
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| 基金项目： | 重庆市科委重点攻关资助项目(2001-6606) |
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| 摘 要： | 采用虫体浸渍法测定辛硫磷、抑太保、高效灭百可、美满对不同龄期甜菜夜蛾(Spodoptera exigua)幼虫的毒力。结果表明2，3，4龄幼虫随龄期增加耐药性增强，2龄幼虫对药剂最为敏感，到3龄后耐药性迅速增强。随虫龄的增加，单头幼虫乙酰胆碱酯酶、磷酸酯酶、羧酸酯酶、谷胱甘肽-S-转移酶活性显著增强。
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| 关 键 词： | 甜菜夜蛾 不同龄期 耐药性 酶活性变化 |
| 文章编号： | 1000-2642(2005)02-0173-03 |
DIFFERENCE IN INSECTICIDE TOLERANCE AND ENZYME ACTIVITY OF SPODOPTERA EXIGUA LARVAE AT DIFFERENT INSTARS |
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| PENG Mei,DENG Xin-ping.DIFFERENCE IN INSECTICIDE TOLERANCE AND ENZYME ACTIVITY OF SPODOPTERA EXIGUA LARVAE AT DIFFERENT INSTARS[J].Journal of Southwest Agricultural University,2005,27(2):173-175,183. |
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| Authors: | PENG Mei DENG Xin-ping |
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| Abstract: | The toxicity of phoxim, aiphacypermethrin, methoxyfenozide and chlorfluazuron to different instar larvae of Spodoptera exigua was tested using the dipping method. Insecticide tolerance of the larvae at the 2~(nd), 3~(rd) and 4~(th) instar stages increased with their development, being lowest in the 2~(nd) instar larvae and rising sharply at and after the 3~(rd) instar stage. The activities of Ache, ACP, ALP,CarE and GST increased with larvae development. |
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