Stem Rot of Capsicum annuum Caused by Sclerotium rolfsii in Korea

Kwon, Jin Hyeuk; Park, Chang Seuk

Research in Plant Disease 2004;10(1):21-24.
Published online March 30, 2004.

Sclerotium rolfsii에 의한 고추 흰비단병 발생

권진혁, 박창석

Stem Rot of Capsicum annuum Caused by Sclerotium rolfsii in Korea

Jin Hyeuk Kwon, Chang Seuk Park

Abstract

A destructive stem rot of pepper (Capsicum annuum) was found from the often field sporadically in Jingyemyon, Hadong-gun in July 2002 and vinyl houses in Moonsan-eup, Jinju City in October 2003. The same fungus also caused collar and crown rot and systemic wilt or blight of whole plant. White mycelium spread over stems of infected plants and sclerotia formed on the old lesions and near the soil surface. The fungus showed maximum mycelial growth around 30oC. The mycelial color is white and width of hyphae ranges 3.6~10.2 mm, and formed clamp connection. Numerous sclerotia were formed in artificial media such as PDA at 30℃. The shape of sclerotia were sphere and 1.0~2.7 mm in diameter. The fungus was isolated repeatedly from the infected tissues and the pathogenecity of fungus to pepper (Capsicum annuum) was confirmed, and identified as Sclerotium rolfsii. This is the first report on the stem rot of pepper (Capsicum annuum) caused by Sclerotium rolfsii in Korea.

Key Words: Pepper (Capsicum annuum), Sclerotium rolfsii, Stem rot