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http://dx.doi.org/10.5423/RPD.2005.11.2.204

Rhizopus Soft Rot on Momordica charantia Caused by. Rhizopus stolenifer in Korea  

Kwon Jin-Hyeuk (Gyeongsangnam-do Agricultural Research and Extension Servies)
Jee Hyeong-Jin (Organic Farming Technology Division, National Institute of Agricultural Science and Technology, RDA)
Publication Information
Research in Plant Disease / v.11, no.2, 2005 , pp. 204-207 More about this Journal
Abstract
A Rhizopus soft rot caused by Rhizopus stolonifer occurred on Momordica charantia at Daesan-myon, Chang-won city, Gyeongnam province from 2003 to 2005. The disease usually started from wound on fruit with water-soaking lesions. The lesion rapidly expanded and softened. The fungal mycelia grew vigorously and sporangia, sporangiophores, and stolons were formed on surface of the fruit. Spoyangiophores were $15\~30{\mu}m$ in width. Sporangia were globose or hemispheric and $90\~180{\mu}m$ in size. The color of sporangia was white and cottony at first and turned to brownish black with many spores at maturity. Columella were hemispheric and $80\~150{\mu}m$ in size. Sporangiospores were irregular round or oval, brownish-black streaked and $7\~18{\times}6\~12{\mu}m$ in size. The optimum temperature for mycelial growth of the fungus on PDA was $25^{\circ}C$. On the basis of mycological characteristics and pathogenicity to host plants, the causal fungus was identified as Rhizopus stolonifer (Ehrenberg ex. Fr,) Lind. This is the first report of Rhizopus soft rot on M. charantia caused by R. stolonifer in Korea.
Keywords
Momordica charantia; Rhizopus soft rot; Rhizopus stolonifer;
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