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http://dx.doi.org/10.5423/RPD.2014.20.4.270

Assessment of Virulence of Raffaelea quercus-mongolicae and Raffaelea spp. Isolates by Artificial Inoculation of Quercus mongolica Logs  

Son, Su-Yeon (Division of Forest Diseases & Insect Pests, Korea Forest Research Institute)
Seo, Sang-Tae (Division of Forest Diseases & Insect Pests, Korea Forest Research Institute)
Park, Hyung-Cheol (Division of Forest Diseases & Insect Pests, Korea Forest Research Institute)
Publication Information
Research in Plant Disease / v.20, no.4, 2014 , pp. 270-274 More about this Journal
Abstract
Division of Forest Diseases & Insect Pests, Korea Forest Research Institute, Seoul 130-712, Korea The objective of this study was to evaluate the virulence of geographically different isolates of oak wilt pathogen, Raffaelea quercus-mongolicae and other Raffaelea species. In this study, mature trees of Quercus mongolica were inoculated with the various isolates of Raffaelea spp. and their virulence was evaluated by measuring the extent of sapwood discoloration resulting from the inoculation. The average length of discolored sapwood in a lateral direction was longest in the trees inoculated with the isolates from Korea (8.69 cm) followed by R. quercivora (7.51 cm) and the other Raffaelea spp. (3.35 cm). The lateral length of discolored sapwood caused by the inoculation with Korean strains varied from 4.71 to 14.90 cm indicating their differences in virulence. The area of discolored sapwood caused by the inoculation with Raffaelea spp. varied from 1.57 to $8.42cm^2$ indicating their differences in virulence. Based on the length and area of the discolored sapwoods, isolated YY and wj43 appeared to have the highest virulence among all the Raffaelea isolates tested. Each of the two isolates was obtained from Gangwon Province and Jeonbuk Province, respectively.
Keywords
Inoculation; Oak wilt; Raffaelea quercus-mongolicae;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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