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Contamination level and characteristics of Ralstonia solanacearum in soil of greenhouses cultivating tomato
plants in Chungbuk province was determined. R. solanacearum was isolated with the semiselective media in
27 greenhouse soil samples out of 133 greenhouses soil investigated, which indicates 20.3% of tomato cultivating
greenhouses in Chungbuk contaminated with the bacterial wilt pathogen. Density of R. solanacearum was
estimated to 102~4 cfu/g in the contaminated soil. All 71 isolates of R. solanacearum which containing 12 isolates
from the diseased tomato plants were race 1, and 35 isolates of them were biovar 3 and 36 isolates were
biovar 4. More than 88% of 71 isolates were inhibited growth on nutrient agar containing oxolinic acid 0.5 mg/
ml, streptomycin 25 mg/ml, tetracycline 5 mg/ml and cupric sulfate 375 mg/ml (1.5 mM). The 11.3%, 4.2% and
5.6% of the isolates can grow on nutrient agar containing 10 times more oxolinic acid, streptomycin, tetracycline
than minimal inhibitory concentration of the sensitive strains. Five isolates were resistant to 2 bactericides
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도서위치안내: 정기간행물실(524호) / 서가번호: 국내07
2021년 이전 정기간행물은 온라인 신청(원문 구축 자료는 원문 이용)
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