The Plant Pathology Journal
- 제16권6호
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- Pages.312-317
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- 2000
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- 2093-9280(eISSN)
Induction of Systemic Resistance in Watermelon to Gummy Stem Rot by Plant Growth-Promoting Rhizobacteria
- Lee, Yong-Hoon (Division of Plant Environment, National Honam Agricultural Experiment Station) ;
- Lee, Wang-Hyu (Faculty of Biological Resources and Science, Chonbuk National University) ;
- Shim, Hyeong-Kwon (Division of Plant Environment, National Honam Agricultural Experiment Station) ;
- Lee, Du-Ku (Division of Plant Environment, National Honam Agricultural Experiment Station)
- 발행 : 2000.01.01
초록
The selected five plant growth-promoting rhizobacteria (PGPR) strains, WR8-3 (Pseudomonas fluorescens), WR8-6 (P. putida), WR9-9 (P. fluorescens), WR9-11 (Pseudomonas sp.), and WR9-16 (P. putida) isolated in the rhizosphere of watermelon plants were tested on their growth promotion and control effect against gummy stem rot of watermelon. Strains, WR8-3 and WR9-16 significantly increased stem length of watermelon, and there was a little increase in leaf area, fresh weight and root length when strains, WR8-3, WR9-9 and WR9-16 were treated. Generally, seed treatment was better for plant growth promotion than the soil drench, but there was no significant difference. Seed treatment and soil drench of each bacterial strain also significantly reduced the mean lesion area (MLA) by gummy stem rot, but there was no significant difference between the two treatments. At initial inoculum densities of each strain ranging from 10