Ｂｏｔｒｙｔｉｓ ｃｉｎｅｒｅａによるセスバニアの灰色かび病（新称）

Abstract

In the fall of 1989, a new disease was found on Sesbania, tropical leguminous manure crops, in Niigata, Japan. Dark green to grayish brown lesions appeared on the stems, petioles, leaf blades and pods of the plants. A species of Botrytis was isolated from those lesions. The fungus isolated was pathogenic to fruits of eggplant, cucumber and green pepper. Conidia were obovoid to ellipsoid, 1-celled, hyaline or pale brown. The optimum temperature for mycelial growth was 20-25°C on PSA medium. The causal agent was identified as Botrytis cinerea Persoon. “Gray mold of Sesbania” was proposed to the disease.