한국균학회지 (The Korean Journal of Mycology)

한국균학회 (The Korean Society of Mycology)
권호 표지

잔디에서 분리한 Rhizoctonia spp.의 동정과 병원성

Identification and Pathogenicity of Rhizoctonia species Isolated from Turfgrasses

  • 이두형 (서울시립대학교 환경원예학과) ;
  • 최양윤 (서울시립대학교 환경원예학과) ;
  • 이재홍 (서울시립대학교 환경원예학과) ;
  • 김진원 (한국잔디연구소)
  • Lee, Du-Hyung (Department of Environmental Horticulture, Seoul City University) ;
  • Choe, Yang-Yun (Department of Environmental Horticulture, Seoul City University) ;
  • Lee, Jae-Hong (Department of Environmental Horticulture, Seoul City University) ;
  • Kim, Jin-Won (Korea Turfgrass Research Institute)
  • 발행 : 1995.09.30
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초록

잔디의 마름병을 일으키는 Rhizoctonia spp.의 형태적 특징과 병원성을 조사하였다. R. cerealis Van der Hoeven, R. oryzae Ryker et Gooch 및 R. solani $K{\ddot{u}hn}$이 형태 및 배양적 특성에 따라 동정되었다. R. solani의 균주들은 균사융합군 및 배양형이 1(1A), 2-2(IIIB) 및 2-2(IV)로 나누어졌다. R. cerealis, R. oryzae 및 R. solani는 bentgrass와 한국들잔디에 잎집썩음과 잎마름증상을 나타냈다. 접종실험결과 R. cerealis와 R. oryzae 균주들은 한국들잔디보다는 bentgrass에서 병을 심하게 유발시켰다. R. solani AG 1(1A) 균주들은 bentgrass에 대해서 강한 병원성을 나타냈으나 한국들잔디에는 병원성이 중정도이였고 AG 2-2(IIIB) 균주들의 병원성은 들잔디에 중정도, bentgrass에는 약하였다. 들잔디에서 분리한 AG 2-2(IV)는 들잔디에는 중정도, bentgrass에는 약한 병원성을 나타냈다.

Morphological characteristics and pathogenicity of Rhizoctonia species causing blight diseases of turfgrasses were studied. The species were identified as Rhizoctonia cerealis Van der Hoeven, R. oryzae Ryker et Gooch, and R. solani $K{\ddot{u}hn}$ based on their morphological and cultural characteristics. Isolates of R. solani were assigned to anastomosis groups (AG) with cultural type 1 (1A), 2-2 (IIIB), and 2-2 (IV). R. cerealis, R. oryzae and R. solani induced sheath rot and foliar blight symptoms on creeping bentgrass (Agrostis palustris) and zoysiagrass (Zoysia japonica). Inoculation tests showed that disease severity with isolates of R. cerealis and R. oryzae were more serious to creeping bentgrass than zoysiagrass. AG 1(1A) isolates of R. solani were strongly pathogenic on creeping bentgrass, but moderate to zoysiagrass. AG 2-2 (III) isolates were moderately pathogenic to zoysiagrass, but weakly to creeping bentgrass. AG 2-2 (IV) isolates from zoysiagrass were moderately pathogenic to zoysiagrass, but weakly to creeping bentgrass.

키워드

참고문헌

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