A System for Inducing Sporulation of Bipolaris oryzae. F. C. Hau, Graduate Research Assistant, Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Experiment Station, Baton Rouge 70803. M. C. Rush, Professor, Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Experiment Station, Baton Rouge 70803. Plant Dis. 64:788-789. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-788.

Six media and five light treatments were used to obtain sporulation of Bipolaris oryzae. Commercial rabbit food agar induced abundant spore production. The optimum light regime for sporulation was short-cycle radiation of 12 hr of black light followed by 12 hr of complete darkness. Neither continuous illumination by black light nor complete darkness induced sporulation. Exposure of the fungus to fluorescent light after the black light treatment led to production of fewer conidia.

Keyword(s): brown leaf spot, Oryza sativa.