Raphanus sativus, Sinapis alba, and Fagopyrum esculentum as Hosts to Meloidogyne incognita, Meloidogyne javanica, and Plasmodiophora brassicae
AbstractCultivars of oilseed radish (Raphanus sativus var. oleifera cv. Adagio, Nemex, Pegletta, Renova, Siletina, Siletta Nova, and Ultimo), white mustard (Sinapis alba cv. Albatross, Emergo, Maxi, Martigena, Metex, and Serval), buckwheat (Fagopyrum esculentum cv. Prego, Tardo), and phacelia (Phacelia tanacetifolia cv. Angelia) were tested for susceptibility to Meloidogyne incognita race 3 and Meloidogyne javanica. Experiments were conducted in growth chambers at 25 C and 16 hours light for 42 days after inoculation with second-stage juveniles (J2). All cultivars were susceptible to M. incognita and M. javanica. The oilseed radish (cv. Nemex, Pegletta, and Renova) and white mustard (cv. Emergo) were also examined to determine the influence of Heterodera schachtii on susceptibility to Plasmodiophora brassicae as measured by incidence and severity of root galling. All cultivars were susceptible, and neither the severity nor incidence of clubroot galling was affected by H. schachtii. Key words: buckwheat, clubroot of crucifers, Fagopyrum esculentum, Meloidogyne incognita, Meloidogyne javanica, nematode, oilseed radish, Phacelia tanacetifolia, Plasmodiophora brassicae, Raphanus sativus, root-knot nematode, Sinapis alba, trap crop, white mustard.
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