초록

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고추 역병균의 균사생장 및 유주자낭 형성에 미치는 광선 및 pH의 효과를 조사하기 위하여 PC7971외 2균주를 공시하여 다음과 같은 결과를 얻었다. 1. 역병균의 생육적온은 $25^{\circ}C$ 내외이었고, 2. 생육적정 pH는 6.0부근이었다. 3. 유주자낭 형성에는 광이 필요했으며 $20^{\circ}C$에서는 2,000Lux의 광도가 유주자낭 형성에 가장 효과적이었고, 4. 광처리후 56시간까지 급속한 형성을 보였다. 5. Oat meal배지와 V-8 Juice 배지가 Bean meal배지보다 현저히 많은 유주자낭을 형성하였다.

Abstract ▼ AI-Helper

Effect of light and pH on mycelial growth and sporangium formation of Phytophthora capsici Leon, causal fungus of fruit rot of red pepper was carried out on culture media. The maximum mycelial growth occurred at $25^{\circ}C$ and pH 6.0 on potato sucrose agar. The fungus did not produce s...

Effect of light and pH on mycelial growth and sporangium formation of Phytophthora capsici Leon, causal fungus of fruit rot of red pepper was carried out on culture media. The maximum mycelial growth occurred at $25^{\circ}C$ and pH 6.0 on potato sucrose agar. The fungus did not produce sporangia readily in dark condition. However, abundant sporulation occurred by illuminating continuous cool white fluorescent light with 2000 lux for 48 hrs. at $20{\pm}2^{\circ}C$. Oat meal agar was one of the best media for sporangia formation.