| 王芹芹 1, 崔 丽 1, 王 立 1, 黄伟玲 1, 代黎明 2, 袁会珠 1*, 芮昌辉 1*.草地贪夜蛾对小麦的为害风险:取食为害性及解毒酶活性变化初探[J].植物保护,2020,46(1):63-68. |
| 草地贪夜蛾对小麦的为害风险:取食为害性及解毒酶活性变化初探 |
| Risk analysis of the harm of the fall armyworm, Spodoptera frugiperda to wheat: the harmfulness of feeding and change of detoxification enzyme activities |
| 投稿时间：2019-09-22 修订日期：2019-09-26 |
| DOI：DOI:10.16688/j.zwbh.2019508 |
| 中文关键词: 草地贪夜蛾 玉米 小麦 取食选择性 生长量 解毒酶 敏感性 |
| 英文关键词:Spodoptera frugiperda maize wheat feeding choice rate growth detoxification enzyme susceptibility |
| 基金项目:中央级公益性科研院所基本科研业务费专项(Y2019YJ06)；国家重点研发计划（2016YFD0200504） |
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| 中文摘要: |
| 为了探究草地贪夜蛾对小麦的为害风险,我们以取食玉米作为对照,开展研究取食小麦对草地贪夜蛾的存活率、取食选择性、生长量和3种解毒酶及乙酰胆碱酯酶的影响。结果表明:草地贪夜蛾初孵幼虫在小麦上的存活率与玉米并无显著差异,高达90%以上。用小麦连续饲喂3龄幼虫7 d,日均体重增加迅速,与取食玉米无显著差异(P＞0.05)。2龄幼虫取食选择率为小麦＞玉米,3龄和4龄幼虫的取食选择率为玉米＞小麦,但均无显著差异。值得注意的是,小麦饲喂48 h后草地贪夜蛾谷胱甘肽S-转移酶活性和多功能氧化酶含量表现为显著诱导上升,而羧酸酯酶和乙酰胆碱酯酶的活性无显著变化。本试验结果初步表明草地贪夜蛾存在为害小麦的风险,应加强草地贪夜蛾在麦田发生情况的监测,同时应重视草地贪夜蛾取食不同寄主对药剂敏感性机制的研究。 |
| 英文摘要: |
| In order to explore the risk of the pest to wheat,we take corn as comparison, research on the survival rate, feeding choice rate, growth and three detoxification enzymes and acetylcholinesterase activities of Spodoptera frugiperda after feeding wheat. The results show that there was no significant difference between the survival rate of the newly hatched larvae on wheat and maize, up to 90%. Feeding the 3 instar larvae with wheat continuously for 7 days, the average daily weight increased rapidly, and there was no significant difference than corn treatment ( P >0.05). The feeding selection rate of 2 instar larvae was wheat>maize, and that of 3 instar and 4 instar were maize>wheat, but there was no significant difference. It is worth noting that after feeding wheat 48 h, the activity of glutathione S-transferase and the content of multifunctional oxidase of S. frugiperda were significantly induced and enhanced, but the activities of carboxylesterase and acetylcholinesterase were not significantly affected. The results of this experiment preliminarily indicated that is a risk that S. frugiperda can harm wheat, and the monitoring of it’s occurrence in wheat fields should be strengthened. At the same time, more attention should be paid to the study on the mechanism of susceptibility to different host of S. frugiperda. |
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