Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Infection Route of Bacterial Wilt of Tomato Caused by Ralstonia. solanacearum in Hydroponic Culture

수경재배에서 토마토풋마름병의 전염경로

  • Nam, Ki-Woong (Department of Horticulture, Hankyong National University) ;
  • Moon, Byung-Woo (M Horticultural Technique Institute, Korea National Agriculture College) ;
  • Kim, Young-Ho (Department of Horticulture, Hankyong National University) ;
  • Lee, Chang-Hee (Department of Horticulture, Hankyong National University)
  • Published : 2009.06.30
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Abstract

Hydroponic culture has been developed to control soilborn diseases, to increase yield and to enhance the quality of vegetable, The pathogen could be detected from infected plant materials, hydroponic tanks, culture solution and solid media of the severely infected greenhouse, The density of pathogen population was coincided with the severity of disease incidence, For example, 1,900cfu m$L^{-1}$ pf pathogens were counted from tomato plants sampled in a 20% diseased greenhouse. The pathogens may be introduced in the greenhouse through the contaminated soil surrounding the house and/or through the infected young seedlings grown on the nursery soil. Also, not detected to Ralstonia solanacearum from tomato seeds (House Momotaro, Bbaebbae, Ggoggo, and Minicarol cultivar) selling at a market.

본 연구는 토마토 수경재배에서 풋마름 병원균의 분포와 침입 및 전파경로를 구명하여 풋마름병 방제의 기초 자료를 얻고자 수행하였다. 배양액 재배시스템에서 토마토 풋미름병의 발생정도별로 배양액탱크, 배지, 폐액에서 병원균의 밀도를 검정한 결과 20% 정도 발병된 포장의 폐액에서는 19,000cfu/mL의 밀도로 검출되었으며 연작연수가 많을수록 병 발생이 심하였다. 토마토 펄라이트 수경재배시스템에서 토마토 풋마름병의 발생전파 과정은 최초 발생지점으로부터 좌우로 급속히 전파되었다. 토마토 풋마름병 발생포쟁에서 병원균의 유입경로를 추적한 결과 육묘 중에 감염되는 경우와 웹스 주변의 이병된 토양에서 감염되는 경우로 크게 두 가지 방법으로 유입되는 것으로 생각된다. 또한 시판용 토마토 종자에서는 풋마름병원균이 검출되지 않았다.

Keywords

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