Research in Plant Disease 2012;18(1):49-53.
Published online March 30, 2012.
Podosphaera tridactyla에 의한 자두나무 흰가루병 발생
이성찬 ( Seong Chan Lee ) , 한경숙 ( Kyung Sook Han ) , 조성은 ( Sung Eun Cho ) , 박지현 ( Ji Hyun Park ) , 신현동 ( Hyeon Dong Shin )
 
Occurrence of Powdery Mildew of Japanese Plum Caused by Podosphaera tridactyla in Korea
Seong-Chan Lee, Kyung-Sook Han, Sung-Eun Cho1, Ji-Hyun Park1 and Hyeon-Dong Shin1*
Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Suwon 441-744, Korea
1Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136-701, Korea
Received: February 02, 2012   Revised: February 14, 2012   Accepted: March 02, 2012
Abstract
Occurrence of powdery mildew was found on Japanese plum (Prunus salicina) growing in private gardens in Yanggu, Hongcheon, Hoengseong, and Gapyeong of central Korea, in 2011. Despite of extensive survey, however, there was no powdery mildew infection in commercial orchards of Japanese plum in Korea. The initial symptoms included white, evanescent mycelia and irregular patches on leaves and young stems. Infected leaves later showed partial distortion and diffuse red-purple discoloration. Based on morphological characteristics of holomorph and phylogenetic analysis, the causal fungus was identified as Podosphaera tridactyla. This is the first report of powdery mildew on Japanese plum in Korea.
Key Words: Japanese plum, Podosphaera tridactyla, Powdery mildew, Prunus salicina


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