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Biological Control of Pythium Root Rot by Radiation Induced Mutant, Bacillus lentimorbus WJ5a17  

이영근 (한국원자력연구소 방사선이용연구부)
김재성 (한국원자력연구소 방사선이용연구부)
장병일 (한국원자력연구소 방사선이용연구부)
장유신 (한국원자력연구소 방사선이용연구부)
이호용 (상지대학교 생명과학과)
Publication Information
Korean Journal of Environmental Biology / v.21, no.3, 2003 , pp. 276-285 More about this Journal
Abstract
To control pythium root rot, Bacillus lentimorbus WJ5a17 with high anti-fungal activity against Pythium ultimum was induced from B. lentimorbus WJ5 by gamma radiation ($^{60}Co$). The biocontrollers of FWJ5 and FWJ5a17 were formulated ($1.0\times 10^{11}$) with B. lentimorbus WJ5 and WJ5a17, respectively, The population density of FWJ5 and FWJ5a17 maintained highly up to $1.0\times 10^{9}$ CFU $g^{-1}$ in nursery and field soils until 30 days after treatment. P. ultimum spores germination were inhibited 71.0% and 81.4% by FWJ5 and FWJ5a17, respectively. Pythium root rot of yea pepper, Chinese cabbage and radish were significantly (p < 0.05) controled by one time treatment of FWJ5 and FWJ5a17.
Keywords
Bacillus lentimorbus WJ5; biocontroller; mutant; Pythium ultimum;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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