Screening of Pesticidal Active Compounds from Various Domestic Wild Plants

국내 자생 식물자원 중 농약활성물질 탐색

  • Kwon, Oh-Kyung (Rural Department Administration, National Institute of Argricultural Science and Technology) ;
  • Lim, Soo-Kil (College of Natural Resources,Korea University) ;
  • Seong, Ki-Suk (Rural Department Administration, National Institute of Argricultural Science and Technology) ;
  • Choi, Byung-Ryul (Rural Department Administration, National Institute of Argricultural Science and Technology)
  • 권오경 (농촌진흥청 농업기술원) ;
  • 임수길 (고려대학교 자연자원대학) ;
  • 성기석 (농촌진흥청 농업기술원) ;
  • 최병렬 (농촌진흥청 농업기술원)
  • Published : 1997.12.30

Abstract

For the selection of plants contained pesticidal active conpounds, 31 families 59 species of native plants were collected and biological activites of their crude extracts against brown planthopper (Nilaparvata lugens), Xanthomonas oryzae pv. oryzae and allelopathy were examined. Among the screened plants, the crude extracts from the leaves of Ricinus communis and Sophora angustifolia showed 100% and 82% of mortality on brown planthopper at the concentration of 1% (w/v) respectively. Mixed crude extracts of Sophora angustifolia root and Melia azedarach seed exhibited 128${\sim}$155% of synergistic effects on the mortality of brown planthopper. In case of fungicidal activity, the crude extracts from the leaves of 8 plants including Chrysanthemum indicum were inhibitory of the growth of Xanthomonas oryzae pv. oryzae at 1%(w/v) soluction. Seed germination of radish (Raphanus sativas) and barnyardgrass (Echinochloa crus-galli) was inhibited by 0.5%(w/v) leaf extracts of Pinus densiflora and Quercus acutissima. MeOH extracts of Pinus denislora leaves gave 100% inhibition in seed germintion of radish at 2%(w/v) soluction and showed a complete inhibition in seedling growth of barnyardgrass as well as radish at 5% solution.

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