Planthopper Attractant(s) in the Rice Plant

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  • OBATA Tokio
    Pesticide Research Institute, College of Agriculture, Kyoto University Ube Industries Limited. Central Research Laboratory
  • KIM Mujo
    Pesticide Research Institute, College of Agriculture, Kyoto University
  • KOH Hen-Sik
    Pesticide Research Institute, College of Agriculture, Kyoto University
  • FUKAMI Hiroshi
    Pesticide Research Institute, College of Agriculture, Kyoto University

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Other Title
  • ウンカに対するイネの誘引作用
  • ウンカ ニ タイスル イネ ノ ユウイン サヨウ

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In the course of studies on the chemical factors controlling host-selection in three species of planthopper (Nilaparvata lugens, Sogatella furcifera, and Laodelphax striatellus), attractant(s) for these planthoppers was detected in the rice plant. The two-way choice assay using the apparatus shown in Fig. 1 indicated that these planthoppers were significantly attracted to the rice plant. Since antennectomized N. lugens was not attracted to the rice plant, it was suggested that the attractant(s) may consist of volatile component(s) in the rice plant which could be detected by the antennae of the planthopper. The attractant(s) was extracted with ether and the activity was found in the neutral fraction. These data suggest that some volatile compound(s) in the rice plant plays an important role in the orientation of the planthopper to the host plant.

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