Occurrence of Gray Mold on Balsam Pear (Momordica charantia) Caused by Botrytis cinerea in Korea

Kwon, Jin Hyeuk; Park, Chang Seuk

Research in Plant Disease 2006;12(1):58-61.
Published online April 30, 2006.

Botrytis cinerea에 의한 여주 잿빛곰팡이병

권진혁, 박창석

Occurrence of Gray Mold on Balsam Pear (Momordica charantia) Caused by Botrytis cinerea in Korea

Jin Hyeuk Kwon, Chang Seuk Park

Abstract

Ggray mold caused by Botrytis cinerea occurred on Balsam pear (Momordica charantia) at Daesan-myon, Changwon city, Gyeongnam province in Korea from 2004 to 2006. The disease symptoms usually started with water-soaking lesions on the fruits tip and stem, and then the infected plants became withered and eventually died. The conidia of the pathogen appeared on the surface of fruit and stem of infected plants. The conidia were one celled and mostly ellipsoid or ovoid in shape and were light gray in color. The conidia were 6~20 × 4~12 μm in size and conidiophores were 14~30 μm in length. The sclerotia formed abundantly on potato-dextrose agar 18 days after incubation. The optimum temperature for sclerotial formation was 20oC. Pathogenicity of the causal organism was proved according to Koch,s postulates. The causal organism was identified as Botrytis cinerea Persoon: Fries based on the mycological characteristics. This is the first report on gray mold of M. charantia caused by B. cinerea in Korea.

Key Words: Balsam pear, Botrytis cinerea, Gray mold, Momordica charantia