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http://dx.doi.org/10.5423/RPD.2003.9.2.079

Occurrence of Fusarium wilt on Cyclamen Casued by Fusarium oxysporum f. sp. cyclaminis and Selection of Resistant Cultivars  

Kim, Jin-Young (Gyeonggi-do Agricultural Research and Extension Services)
Kim, Hong-Gi (Department of Agricultural Biology, Chungnam National University)
Hong, Sun-Sung (Gyeonggi-do Agricultural Research and Extension Services)
Kim, Jin-Won (Department of Environmental Horticulture, The University of Seoul)
Park, Kyeong-Yeol (Gyeonggi-do Agricultural Research and Extension Services)
Publication Information
Research in Plant Disease / v.9, no.2, 2003 , pp. 79-84 More about this Journal
Abstract
A wilt disease of commercial cyclamen (Cyclamen persicum) which grown in greenhouse was found in Gyeo-nggi province of Korea during the period from August, 2001 to July, 2002. The disease incidence was up to 42.7% in Kimpo, Gyeonggi province. The disease was more severe in ebb and flow irrigation system than con-ventional overhead flooding\'s. The wilted cyclamen plants showed the chlorosis of leaves and followed by the death. The vascular tissues of the infected basal stem and bulb were discolored with black streaks. The casual fungus was identified to be Fusarium oxysporum f. sp. cyclaminis on the basis of mycological characteristics. Effect of infected soil showed 100% infection rate when the cyclamen plants were grown in potting with infested soil. Examine resistant cultivar showed ‘Matis red’, ‘Schubert’, ‘Victoria’ and ‘Chopin’ were the resistant cultivars but most of cultivars were susceptible to Fusarium wilt. The control effect of chemicals for cyclamen wilt was not much efficient to curative effects even though. Benomyl WP and Fludioxonil SC on the Fusarium wilt had only preventive effects by soil drenching in the pot before inoculation of F. oxysporum. This is the first report on the fusarium wilt of cyclamen caused by F. oxysporum f. sp. cyclaminis in Korea.
Keywords
Cyclamen persicum; fungicides; Fusarium oxysporum; resistant cultivar;
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