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http://dx.doi.org/10.5423/RPD.2013.19.2.108

Reduction of Bacterial Wilt Diseases with Eggplant Rootstock EG203-Grafted Tomatoes in the Field Trials  

Lee, Mun Haeng (Buyeo Tomato Experiment Station, Chungcheong Nam Do Agricultural Research & Extension Services)
Kim, Ji Kwang (Buyeo Tomato Experiment Station, Chungcheong Nam Do Agricultural Research & Extension Services)
Lee, Hee Kyoung (Buyeo Tomato Experiment Station, Chungcheong Nam Do Agricultural Research & Extension Services)
Kim, Keyng Jae (Buyeo Tomato Experiment Station, Chungcheong Nam Do Agricultural Research & Extension Services)
Yu, Seung Hun (Department of Applied Biology, Chungnam National University)
Kim, Young Shik (Department of Plant and Food Sciences, Sangmyung University)
Lee, Youn Su (Department of Applied Plant Sciences, Kangwon National University)
Publication Information
Research in Plant Disease / v.19, no.2, 2013 , pp. 108-113 More about this Journal
Abstract
Wilt damage on tomato plants caused by Ralstonia solanacearum has been increased as the areas of tomato cultivation increased during the warm seasons. Also, the tomato rootstocks used to prevent the disease occurrence are not effective in the highly prevailing regions. Therefore, bacterial wilt resistant eggplant rootstock EG203, collected from AVRDC, was tested for its effect to deter the Ralstonia solanacearum wilt disease in the greenhouses at Buyeo Tomato Experiment Station from 2003 to 2005, and at Gumi, Kyungpook province from 2009-2011. Planting of eggplant rootstock EG203 should be done three weeks before the planting of tomato scions so that they can have similar stem diameter (2.5-3.0 mm) and can be easily grafted. Both insertion and inarching grafting showed 93-96% success rates. In the greenhouse tests at Buyeo Tomato Experiment Station from 2003 to 2005, eggplant rootstock EG203-grafted tomatoes showed the disease occurrence of 4.3%. On the other hand, non-grafted or other commercial rootstock-grafted tomatoes showed disease occurrence of 58.0% and 25.0-36.7%, respectively. In the greenhouse tests at Gumi, Kyungpook province in 2009, the disease occurrence on the EG203-grafted and non-grafted tomatoes was 2-5% and 20-80%, respectively. In 2010, at Gumi, Kyungpook province, when the wilt disease occurred slightly, the tomatoes grafted with tomato rootstocks B-blocking and Chung-gang, and eggplant rootstock EG203 showed similar disease severities, but EG203-grafted tomatoes formed lately cluster, resulting in the reduction of yield compared to tomato-grafted tomatoes. In 2011, at Gumi, Kyungpook province, when the wilt disease occurred severely, the tomato rootstocks 'B-blocking' and Chung-gang and eggplant rootstock EG203-grafted tomatoes showed disease occurrences of 60-85% and 0-1%, respectively. Therefore, it was concluded that tomato rootstocks 'B-blocking' and 'Chung-gang' are more useful in the areas contaminated with low levels of pathogen and eggplant rootstock EG203 is more useful in the areas contaminated with high levels of pathogen.
Keywords
Eggplant rootstock; Graft; Ralstonia solanacearum; Tomato bacterial wilt;
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Times Cited By KSCI : 4  (Citation Analysis)
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