花生褐斑病菌培养基筛选及生理性状和致病性研究

 花生褐斑病菌(Cercospora arachidicola Hori)在花生秆培养基上的产孢量优于前人推荐的3种培养基。在6种供试培养基中,菌丝生长量则以前人推荐的花生叶斑病尾孢菌培养基最大。培养过程中,不同光照处理对病菌生长和产孢不敏感;不同温度处理产孢量有显著差异。2%葡萄糖液有促进孢子萌发作用。病菌经人工培养不失其致病性。

STUDIES ON CULTURE MEDIUM SCREENING,PHYSIOLOGY AND PATHOGENICITY OF CERCOSPORA ARACHIDICOLA HORI CAUSING CERCOSPORA BROWN SPOT OF PEANUT

The amount of sporulation of fungus (Cercospora arachidicola Hori) on the peanut stalk medium is more than that on other 3 different media reported before.The amount of mycelial growth on Landers medium, one of the reported medium, is the biggest among all 6 provided media. In the process of cultivation, the fungus grew and sporulated nonsensitively under various light treatments.There was remarkable difference for various temperature treatments. 2% of glucose solution is available for conidia germination. The artificial isolates of the fungus which had been obtained from diseased peanut plants were confirmed with the pathogenicity.