Research in Plant Disease 2008;14(2):127-130.
Published online August 30, 2008.
Rhizopus stolonifer에 의한 산딸기 무름병 발생
권진혁, 쩐티펑지
 
Occurrence of Rhizopus Soft Rot on Rubus crataegifolius Caused by Rhizopus stolonifer in Korea
Jin Hyeuk Kwon, Tran Thi Phuong Chi
Abstract
Rhizopus soft rot caused by Rhizopus stolonifer on June, 2008 occurred on Rubus crataegifolius Bunge in the box at Jinju City Wholesale Market of Agricultural Products at Gyeongnam province in Korea. The infected fruits were rapidly water-soaked, softened, black and eventually rotted. The symptoms occurred after infecting wounds at harvest time. The colony were white to light brown, formed much sporangiospores. The optimum temperature of the fungus on potato dextrose agar was 30℃. Sporangiophores were 12~25 μm in width. Sporangia were globose or hemispheric, white at first and gradually to black, and 82~195 μm in size. Columella were hemispheric, and 70~92 μm in size. Sporangiospores were irregular round or oval, brownishblack and 9~21×7~8 μm in size. On the basis of symptom, mycological characteristics and pathogenicity of the fungus, the causal fungus was identified as Rhizopus stolonifer. This is the first report of Rhizopus soft rot by R. stolonifer on R. crataegifolius in Korea.
Key Words: Rhizopus soft rot, Rhizopus stolonifer, Rubus crataegifolius


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