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http://dx.doi.org/10.5423/RPD.2006.12.3.287

Occurrence of Gray Mold on Aerides japonicum Caused by Botrytis cinerea in Korea  

Kwon, Jin-Hyeuk (Gyeongsangnam-do Agricultural Research and Extension Services)
Jee, Hyeong-Jin (National Institute of Agricultural Science and Technology, RDA)
Yun, Jae-Gill (Department of Horticultural Science, Jinju National University)
Publication Information
Research in Plant Disease / v.12, no.3, 2006 , pp. 287-289 More about this Journal
Abstract
Since 2004, a gray mold on Aerides japonicum Lindenb. & Reichb. caused by Botrytis cinerea occurred in a few greenhouses at Goseong and Tongyeong, Gyeongnam, Korea. The disease mainly started on the basal part of leaves, and often lead to severe rots of whole plant. Abundant grayish mycelia and conidial mats were visible on the lesions under a humid conditions. The light gray conidia were one celled and mostly ellipsoid or ovoid in shape. The conidia were $6{\sim}21{\times}4{\sim}13{\mu}m$ in size and conidiophores were $15{\sim}34{\mu}m$ in length. The fungus formed abundant sclerotia on potato-dextrose agar after 18 days incubation at $20^{\circ}C$. The fungus was identified as Botrytis cinerea Persoon: Fries. based on its pathogenicity and mycological characteristics examined in this study. This is the first report of gray mold of Aerides japonicum caused by B. cinerea in Korea.
Keywords
Aerides japonicum; Botrytis cinerea; Gray mold;
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