Nematological Survey on Winged Bean Fields in Okinawa with Special Reference to Varietal Difference in Susceptibility to Root-knot Nematodes

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト

 Vertical distribution of parasitic nematodes in the rhizosphere (0-35 cm in soil depth) of winged bean and differences in susceptibility to root-knot nematodes among 46 winged bean varieties were surveyed in subtropical Ishigaki Island, Okinawa.
 Eight nematode genera were found, and root-knot nematodes (Meloidogyne incognita and M. javanica) were most predominant. Spiral nematodes also occurred frequently, but their population levels were very low.
 Vertical distribution of root-knot nematode larvae indicated a tendency that the upper soil layer contained more number of the larvae than the lower layer, although the distribution was slightly influenced by root distribution of different varieties of winged bean. It was apparent that the spiral nematode occurred in comparatively deep soil below 15 cm of depth.
 A high degree of variability in the population density of root-knot nematode larvae in the rhizosphere was observed among winged bean varieties tested, i.e., 16 varieties showed a high population density, 10 varieties a moderate density, and 20 varieties a low density less than 10 larvae per 10 g of soil.

刊行年月日
作成者 RINKO TERUYA JIRO ABE MASAAKI NAGAMINE HIROSHI NAKAMURA
オンライン掲載日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
18
2
開始ページ 142
終了ページ 147
言語 eng

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