The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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A Leaf Spot of Soybean Caused by Corynespora cassiicola

Corynespora cassiicola에 의한 콩 갈색점무늬병(가칭)

  • Yu, Seung-Hun (Department of Agricultural Biology, College of Agriculture, Chungnam National University) ;
  • Kim, Jong-Tae (Department of Agricultural Biology, College of Agriculture, Chungnam National University) ;
  • Shim, Hyeong-Kwon (Honam Crop Experiment Station)
  • 유승헌 (충남대학교 농과대학 농생물학과) ;
  • 김종태 (충남대학교 농과대학 농생물학과) ;
  • 심형권 (호남작물시험장)
  • Published : 1991.03.31
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Abstract

A species of Corynespora was isolated from red-brown spots developed on leaves of soybean. The fungus was identified as Corynespora cassiicola and proved to be pathogenic to soybean plants. Growth of this fungus in vitro was optimal at $27^{\circ}C$, and poor at lower than 19 and higher than $35^{\circ}C$. Sporulation was abundant on the potato dextrose malt agar and moderate on V-8 juice agar and potato dextrose agar, The relative susceptibility of several soybean cultivars to Corynespora cassiicola was evaluated in the greenhouse. Cultivar Hwangkum of soybeans appered to be resistant to C cassiicola and other cultivars were susceptible or moderately resistant.

콩 잎에 발생한 갈색점무늬병반에서 분리한 Corynespora sp.는 C. cassiicola로 동정되었으며 이 균을 접종 실험한 결과 콩에 병원성을 나타내었다. 이 균의 생장적온은 $27^{\circ}C$였으며 $19^{\circ}C$와 $35^{\circ}C$에서는 균총생장이 저조하였다. 포자형성은 potato dextrose malt agar에서 매우 양호하였으며 V-8 juice agar와 potato dextrose agar에서는 중간정도였다. C. cassiicola에 대한 콩 품종의 감수성 정도를 비교하였던바 공시한 9개 품종 중 황금 콩이 저항성을 나타내었고 기타 품종은 저항성 및 감수성을 나타내었다.

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