The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Damping-off of Indian Lettuce Caused by Rhizoctonia solani AG-4

  • Moon, Youn-Gi (Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services) ;
  • Kim, Se-Won (Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services) ;
  • Seo, Hyun-Taek (Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services) ;
  • Kim, Wan-Gyu (Global Agro-Consulting Corporation)
  • Received : 2020.11.17
  • Accepted : 2020.12.08
  • Published : 2020.12.31
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Abstract

Damping-off symptoms were frequently observed on young plants of Indian lettuce (Lactuca indica) grown in a farmer's vinyl greenhouse located in Goseong, Gangwon province of Korea during a disease survey in June 2019. The incidence of diseased plants in the vinyl greenhouse investigated was 30-50%. Four isolates of Rhizoctonia sp. were obtained from the diseased plants and identified as Rhizoctonia solani AG-4 based on the morphological characteristics and anastomosis test. Three isolates of R. solani AG-4 were tested for pathogenicity on Indian lettuce by artificial inoculation. All the tested isolates induced damping-off symptoms on the inoculated plants. The symptoms were similar to those observed in plants from the farmer's vinyl greenhouse investigated. This is the first report of R. solani AG-4 causing damping-off in Indian lettuce.

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References

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