Antifeedants against Acusta despesta from the Japanese Cedar, Cryptomeria japonica 2

  • CHEN Xiao Hui
    Department of Bioresources Science, Faculty of Agriculture, Kochi University
  • KIM Chul-Sa
    Department of Bioresources Science, Faculty of Agriculture, Kochi University
  • KASHIWAGI Takehiro
    Department of Bioresources Science, Faculty of Agriculture, Kochi University
  • TEBAYASHI Shin-ichi
    Department of Bioresources Science, Faculty of Agriculture, Kochi University
  • HORIIKE Michio
    Department of Bioresources Science, Faculty of Agriculture, Kochi University

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タイトル別名
  • Antifeedants against Acusta despesta from the Japanese Cedar, Cryptomeria japonica. II.

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The hexane-soluble fr. was found to be as intense in antifeeding activity as the crude methnol extract of Cryptomeria japonica against Acusta despesta. This hexane soluble-fraction was used to isolate and identify two sesquiterpenols, (−)-cubebol and (+)-2,7(14),10-bisabolatrien-1-ol-4-one, as the active compounds. Both compounds strongly inhibited the feeding behavior of A. despesta at 120 μg/cm2 and 80 μg/cm2 concentrations, respectively.

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