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Keumsan Ginseng & Medicinal Crop Experiment Station, Keumsan 312-822, Korea(Received 15, March 2011., Accepted 19, March 2011)ABSTRACT : Ginseng root rot caused by Cylindrocarpon destructans is one of the most destructive diseases of ginseng(Panax ginseng). We analyzed the features of the species through pathogenicity test and genetic diversity analysisof C. destructans in Korea, for its application as basic data to attempt for effective control. C. destructans isolatedfrom rotted ginseng roots exhibited a variety of colonial colors on media. It was assumed that there may existgenetic diversity in the population by the diversity of pathogenicity among isolates observed when artificially inoculatedinto ginseng roots. Pathogenicity tests using ex vivo wound inoculation with agar mixture inoculation on ginsengroots were performed similar results as were observed appear to be useful for rapid pathogen inspection. Accordingto RAPD analysis results, Korean C. destructans isolates formed a single genetic group which can be distinguishedreadily from closely related other fungi. C. destructans group was divided into two small groups. Therefore, wewere able to confirm pathogenicity and genetic difference between the isolates in each of the groups of the pathogen.KEYWORDS : Cylindrocarpon destructans, Genetic diversity, Ginseng root rot, Pathogenicity test, RAPD analysis

Genetic Diversity of Korean Cylindrocarpon destructans Based on Virulence Aassay and RAPD Analysis