Host Range Screening of the Sugar Beet Nematode, Heterodera schachtii Schmidt
2016
Kim, D.H., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Cho, M.R., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Yang, C.Y., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Kim, H.H., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Kang, T.J., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Yoon, J.B., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea
Sugar beet nematode (Heterodera schachtii Schmidt) was first detected in 2011, in Chinese cabbage grown in the highland areas of Korea. Chemical control of the nematode by nematicides is not feasible due to its cyst-forming characteristics; therefore, the cultivation of non-host crops is a preferable alternative to utilize nematode-infected fields. In this study, a total of 276 plant cultivars belonging to 18 different families were screened to evaluate their resistance to the nematode. Based on the number of cysts formed following nematode inoculation, the tested crops were classified into 3 levels: susceptible, moderately susceptible, and resistant/immune. Among the 276 cultivars tested, 106 cultivars were susceptible, 40 cultivars were moderately susceptible, and 130 cultivars were resistant/ immune. Among the resistant/immune cultivars, cyst formation was not observed on eggplant, tomato, lettuce, perilla, carrot, celery, watermelon, oriental melon, cucumber, pumpkin, chives, onion, welsh onion, balloon flower roots, deodeok (Codonopsis lanceolata), Jandae (Adenophora triphylla), and bean. Therefore, these plants are regarded as immune to the cyst nematode. However, many crops belonging to Solanaceae, Asteraceae, Chenopodiaceae, and Poaceae families showed moderate susceptibility or immunity, depending on the crop or cultivar. This study provides a basis for alternative crop recommendations for sugar beet nematode cyst-infected farms in Chinese cabbage production areas.
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