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    孟昭军, 林健, 王琪, 鲁艺芳, 王雷, 严善春. 落叶松毛虫对茉莉酸甲酯处理长白落叶松苗的行为反应[J]. 北京林业大学学报, 2018, 40(12): 60-67. DOI: 10.13332/j.1000-1522.20180036
    引用本文: 孟昭军, 林健, 王琪, 鲁艺芳, 王雷, 严善春. 落叶松毛虫对茉莉酸甲酯处理长白落叶松苗的行为反应[J]. 北京林业大学学报, 2018, 40(12): 60-67. DOI: 10.13332/j.1000-1522.20180036
    Meng Zhaojun, Lin Jian, Wang Qi, Lu Yifang, Wang Lei, Yan Shanchun. Behavioral responses of Dendrolimus superans to Larix olgensis seedlings treated with methyl jasmonate[J]. Journal of Beijing Forestry University, 2018, 40(12): 60-67. DOI: 10.13332/j.1000-1522.20180036
    Citation: Meng Zhaojun, Lin Jian, Wang Qi, Lu Yifang, Wang Lei, Yan Shanchun. Behavioral responses of Dendrolimus superans to Larix olgensis seedlings treated with methyl jasmonate[J]. Journal of Beijing Forestry University, 2018, 40(12): 60-67. DOI: 10.13332/j.1000-1522.20180036

    落叶松毛虫对茉莉酸甲酯处理长白落叶松苗的行为反应

    Behavioral responses of Dendrolimus superans to Larix olgensis seedlings treated with methyl jasmonate

    • 摘要:
      目的通过外源茉莉酸甲酯(MeJA)处理长白落叶松对落叶松毛虫寄主选择行为影响的研究,明确外源茉莉酸甲酯的诱导落叶松抗虫作用,为生态防治落叶松食叶害虫提供理论依据。
      方法本实验利用昆虫行为测定法,研究落叶松毛虫对不同浓度茉莉酸甲酯处理2年生长白落叶松苗的行为反应。
      结果茉莉酸甲酯诱导处理的松苗对落叶松毛虫雌虫具有很强的驱避作用,迫使其将大量卵产在对照处理松苗上;落叶松毛虫在用1、5或10mmol/L MeJA处理松苗上产卵量与对照相比分别减少47.21%~77.03%、43.18%~55.46%或71.80%~80.08%;落叶松毛虫雌虫对1、5或10mmol/L MeJA处理松苗的嗅觉反应率分别比对照降低49.24%、59.71%或43.68%~61.24%;而高浓度茉莉酸甲酯处理对落叶松毛虫嗅觉及产卵选择的影响更强。
      结论茉莉酸甲酯处理的长白落叶松明显影响落叶松毛虫雌虫的产卵和嗅觉选择行为,且存在浓度依赖关系,诱导影响持续3~5d。

       

      Abstract:
      ObjectiveThe induction and anti-insect effects of exogenous methyl jasmonate to larch were clarified, which will provide the theoretical basis for the ecological control of larch defoliator, through the study on the effects of exogenous methyl jasmonate (MeJA) on host selection behavior of Dendrolimus superans.
      MethodDendrolimus superans, two-year-old seedlings of L. olgensis sprayed with different concentrations of MeJA, and the effects of these treatments on behavioral responses of the moth were tested by cages and Y-tube olfactometers.
      ResultMeJA-treated seedlings repelled the female moth and made the moth lay lots of eggs on control seedlings. Compared with control, the oviposition percent of the female moth on 1, 5 or 10 mmol/L MeJA-treated seedlings decreased by 47.21%-77.03%, 43.18%-55.46% or 71.80%-80.08%; then the olfactory response ratio of the female moth on 1, 5 or 10 mmol/L MeJA-treated seedlings reduced by 49.24%, 59.71% or 43.68%-61.24%, and the higher concentration MeJA was used to treat the seedlings, the more obvious effect was observed on the behavior responses of the moth.
      ConclusionThe MeJA-treated L. olgensis seedlings distinctly affect the olfactory and oviposition choice behavior of the female moth. While the stress responses of seedlings are relevant to the concentrations of MeJA, and the induced function of MeJA can last for 3-5 days.

       

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