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http://dx.doi.org/10.5423/RPD.2019.25.3.124

Occurrence and Vertical Distribution of Meloidogyne incognita in Chinese Yam (Dioscorea batatas)  

Kwon, Giyoon (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University)
Kang, Heonil (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University)
Seo, Jongmin (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University)
Yun, Eulsoo (Nematode Research Center, Life and Industry Convergence Research Institute, Pusan National University)
Park, Namsook (Nematode Research Center, Life and Industry Convergence Research Institute, Pusan National University)
Choi, Insoo (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University)
Publication Information
Research in Plant Disease / v.25, no.3, 2019 , pp. 124-130 More about this Journal
Abstract
The study was conducted to investigate the infestation and distribution of plant-parasitic nematodes on Chinese yam (Dioscorea batatas) in Andong, Korea. Root-knot nematodes, Meloidogyne incognita was the most prevalent nematode species which is found from 43 yam fields (81.1%) with high population densities (average of 450 juveniles/$300cm^3$). Other nematodes, root-lesion nematode (Pratylenchus spp.) and pin nematode (Paratylenchus spp.) were less problematic. Density of juveniles (J2) of M. incognita was $10\;J2/300cm^3$ by August, then increased to 274 in September and 624 in October. The highest J2 density was found at the soil depth between 40 and 50 cm ($1,840\;J2/300cm^3$). M. incognita was able to infest yam tuber down to a depth of 70 cm and developed galls outside and brown spots inside. The highest number of females were found at 40-50 cm (79 females/10 cm piece) tuber from the top.
Keywords
Chinese yam; Dioscorea batatas; Meloidogyne incognita; root-knot nematodes; vertical distribution;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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