Isolation and Biological Characteristics of the Pathogen of Corn Stem Root Rot
To investigate the morphological and biological characteristics of the pathogens causing maize stem base rot,the pathogens were isolated and cultured under various conditions including different temperatures,light,pH levels,and carbon and nitrogen sources.The results revealed that the disease is caused by Fusarium species.The colony appears round,with a low protru-sion,milky white color,and low transparency.The mycelium is septate,and the conidia are oval or cylindrical with one to two sep-ta.The optimal growth temperature for the fungus is 25°C.The preferred carbon and nitrogen sources are starch and peptone,re-spectively.The optimal pH for growth is 8,and the pathogen is sensitive to light.These findings provide a theoretical foundation for the diagnosis and control of maize stem base rot.
CornStem base rotFusarium spp.Biological characteristics
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