›› 2003, Vol. 46 ›› Issue (6): 739-744.

• 研究论文 • 上一篇    下一篇

虫害诱导的水稻挥发物对褐飞虱的驱避作用

周强,徐涛,张古忍,古德祥,张文庆   

  • 出版日期:2003-12-20 发布日期:2003-12-20

Repellent effects of herbivoreinduced rice volatiles on the brown planth opper,Nilaparvata lugens Stl

ZHOU Qiang,XU Tao,ZHANG Gu-Ren,GU De-Xiang, ZHANG Wen-Qing*   

  • Online:2003-12-20 Published:2003-12-20
  • Contact: ZHANG WenQing

摘要: 水稻叶片在遭受害虫的危害时,释放一些特异性的挥发性物质。这些挥发性信息物质在调节植物、植食性昆虫及其天敌的相互关系中有重要作用。利用“Y”型嗅觉仪研究了褐飞虱对虫害诱导的11种水稻挥发物(浓度为2 Μl 化合物溶解在100 Μl丙酮溶液中)的行为反应。结果表明,(E)-2-己烯醛、(E)-2-己烯-1-醇、-2-庚醇和水杨酸甲酯等4种化合物对褐飞虱成虫有显著的驱避作用,而(Z)-3-己烯-1-醇、-2-庚酮、柠檬烯、罗勒烯、芳樟醇、-β-子丁香烯和橙花叔醇等7种物质对褐飞虱成虫的选择行为无显著影响。浓度梯度的实验表明,浓度(不同体积的待测化合物用100 Μl丙酮稀释)较低的(E)-2-己烯醛(0.5 Μl、1 Μl)和芳樟醇(05 Μl、1 Μl、5 Μl)对褐飞虱成虫的选择行为无显著影响,而较高浓度的(E)-2-己烯醛(5 Μl、10 Μl)和芳樟醇(10 Μl)对褐飞虱成虫均有明显的驱避作用。

关键词: 水稻, 褐飞虱, 虫害诱导的植物挥发物, 驱避作用

Abstract: Rice plants response to insect herbivory by synthesizing and releasing complex blends of volatiles, which provide important host location cues for herbivores and its natural enemies. The behavioral responses of adult brown planthopper, Nilaparvata lugens Stal to eleven herbivoreinduced rice volatile compounds were studied with a Ytube olfactometer. The results showed that four compounds, (E)-2-hexenal, (E)-2-hexen-1-ol,-2-heptanol and methyl salicylate,had significantly repellent effects on the adult brown planthopper under the tested concentrations(2-μL compounds were dissolved in 100 μL acetone respectively),however,seven other compounds,(E)-2-hexen-1-ol,-2-heptanone, limonene, ocimene, linalool,-β-caryophyllene and (E)nerolidol, had no significant effects on the selection behavior of the adult brown planthopper under the same concentration. Further experiments showed that the volatile compounds, (E)-2-hexenal and linalool,had no significant effects on the selection behavior of the adult brown planthopper at lower concentrations [(E)-2-hexenal (0.5 μL, 1 μL) and linalool (0.5 μL, 1 μL, 5 μL) were dissolved in 100 μL acetone respectively]. However,these volatile compounds had markedly repellent effects on the selection behavior of the adult brown planthopper at higher concentrations [(E)-2-hexenal(5 μL, 10 μL) and linalool(10 μL) were dissolved in 100 μL acetone respectively].

Key words: Rice, Nilaparvata lugens, herbivoreinduced plan t volatiles, repellent effects