Selection of Beneficial Microbial Agents for Control of Fungal Diseases in the Phyllosphere of Cucumber Plant

오이 지상부의 주요 곰팡이 병해의 생물적 방제용 유용미생물의 선발

  • Lee, Sang-Yeob (Agricultural Microbiology Team, National Academy of Agricultural Science (NAAS), Rural Development Administration(RDA)) ;
  • Lee, Young-Kee (Crop Protection Division, National Academy of Agricultural Science (NAAS), Rural Development Administration(RDA)) ;
  • Park, Kyung-Seok (Agricultural Microbiology Team, National Academy of Agricultural Science (NAAS), Rural Development Administration(RDA)) ;
  • Kim, Yong-Ki (Organic Agriculture Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
  • 이상엽 (농촌진흥청 국립농업과학원 농업미생물팀) ;
  • 이영기 (농촌진흥청 국립농업과학원 작물보호과) ;
  • 박경석 (농촌진흥청 국립농업과학원 농업미생물팀) ;
  • 김용기 (농촌진흥청 국립농업과학원 유기농업과)
  • Received : 2010.11.01
  • Accepted : 2010.12.09
  • Published : 2010.12.31

Abstract

Bacillus subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 obtained from phyllosphere of cucumber plants were selected for biological control of fungal air-borne diseases. For the downy mildew, diseased area of B. subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 showed 0.5%, 20.2% and 42.0%, but that of control was 82.0% respectively, in cucumber seedling test. Incidence of powdery mildew by once application of B. subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 was 2.8%, 3.6% and 12.3%, respectively, whereas that of control was 65.6%. On the gray mold, diseased area of B. subtilis B29, B. subtilis M10 and Streptomyces sp. CC19 was 8.0%, 30.8% and 5.2%, respectively, compared to 81.2% for the control. Therefore, B. subtilis B29 could be a prospective antagonist for biological control of powdery mildew, downy mildew and gray mold of cucumber plant.

오이 지상부에 발생하는 주요 곰팡이병인 노균병, 흰가루병 및 잿빛곰팡이병에 대한 생물적 방제를 위하여 오이식물제로부터 Bacillus subtilis B29, B. subtilis M10 and Streptomyces sp. CC19균주를 분리하였다. 오이 노균병에 대한 유묘검정에서 B. subtilis B29, B. subtilis M10과 Streptomyces sp. CC19균주는 0.5%, 20.2% 및 42.0%의 병반면적율을 나타내었지만, 무처리에서는 82.0% 발생하였다. 오이 흰가루병에 대한 비닐하우스 포장실험에서 B. subtilis B29, B. subtilis M10과 Streptomyces sp. CC19균주는 2.8%, 3.6%와 12.3% 발생하였지만 무처리에서 65.6% 발생면적을 나타내었다. 오이 잿빛곰팡이병에 대한 B. subtilis B29, B. subtilis M10과 Streptomyces sp. CC19균주는 8.0%, 30.8% 및 5.2%를 각각 나타내었고 무처리에서는 81.2%의 병반면적율을 나타내었다. 그러므로 B. subtilis B29균주는 오이에 발생하는 흰가루병, 노균병과 잿빛곰팡이병의 생물적 방제에 유망한 균주로 선발하였다.

Keywords

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