Abstract
High sporulation method and cultural characteristics of Cercospora capsici causing Cercospora leaf spot of pepper were examined. Optimum temperature for mycelial growth of Cercospora capsici was $25^{\circ}C$. The fungus did not grow below $5^{\circ}C$ and over $35^{\circ}C$. Optimum pH for mycelial growth was pH 4.0~pH 8.0. Mycelial growth was not influenced by light. C. capsici sporulated well on pepper leaf agar (5g/l). A standard method of sporulation established was as follows. The mycelial plugs were ground with some water in motar with pestle. The mycelial suspension was smeared on the surface of medium and incubated for 2~3 days at $20^{\circ}C$. The culture surface was lightly scraped with a brush after adding 1 ml of sterile water to stimulate sporulation and further incubated for 2~3 days.
고추 갈색점무늬병(Cercospor capsici)병원균의 균사특성과 포자형성 방법 조사하였다. C. capsici 병원균의 균사생장 적온은 $25^{\circ}C$이였고 $5^{\circ}C$ 이하와 $35^{\circ}C$ 이상에서는 균사생장이 일어나지 않았다. pH 4.0~pH 8.0의 넓은 범위에서 균사생장에 차이가 없었고 일장도 균사생장에는 영향을 주지 않는 것으로 나타났다. 분생포자 다량 형성 시키기는 배지로는 0.5% 고추잎배지가 가장 좋았으며 배지 상에서 포자를 다량으로 형성시키는 방법은 고추잎배지에 균사현탁액을 도말 한 후 2,3일간 $20^{\circ}C$에서 배양한 후 1ml/접시 살균수를 첨가하여 배지표면을 긁어 자극을 준 후 2, 3일정도 배양을 하면 포자형성이 양호하였다.
