Research in Plant Disease 2003;9(3):145-148.
Published online September 30, 2003.
Botrytis cinerea에 의한 칼란코에 잿빛곰팡이병
권진혁, 박창석
 
Gray Mold of Kalanchoe (Kalanchoe blossfeldiana) Caused by Botrytis cinerea in Korea
Jin Hyeuk Kwon, Chang Seuk Park
Abstract
In April of 2002, the gray mold disease occurred severely on kalanchoe (Kalanchoe blossfeldiana) grown in a nursery in Daesan-myon, Changwon City, Korea. The lesions were started with water-soaked spot and the leaves discolored from the tip and became gray or dark and gradually expanded to whole leaf. The conidia and mycelia of pathogen appeared on flower, flower stalk and stem. Conidia were gray, 1-celled, mostly ellipsoid or ovoid in shape and were 8~17 × 5~12 mm in size. Conidiophores were 13~34 mm in size. The sclerotia were formed abundantly on potato-dextrose agar. The optimum temperature for sclerotial formation was 20℃. Pathogenicity of the causal organism was proved on Kalanchoe blossfeldiana according to Koch,s postulate. The causal organism was identified as Botrytis cinerea based on mycological characteristics. This is the first report on gray mold of Kalanchoe (Kalanchoe blossfeldiana) caused by Botrytis cinerea in Korea.
Key Words: Botrytis cinerea, gray mold, kalanchoe, Kalanchoe blossfeldiana


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