Experiments were conducted under greenhouse conditions to determine the reaction of eleven radish (Raphanus sativus) cultivars to Meloidogyne javanica and the pathogenicity of this nematode to a previously selected cultivar. The cultivars tested were 'Comprido Branco', 'Crimson Gigante', 'Ponta Branca', 'Comprido Vermelho', 'Serrano', 'Gigante Wurzburgo', 'Saxa', 'Redondo Vermelho', 'Redondo Gigante', 'Cometo' and 'Akamaru Hatsuka'. Radish plants were inoculated with 2,000 eggs, and the [root-gall (IG) and egg-mass (IMO) indexes and reproduction factor (FR)] were determined 53 days after inoculation. In the other experiment, three populational levels (0, 500 (low level) and 10,000 (high level) nematode eggs) were individually inoculated in 'Redondo Vermelho' radish cultivar. The results showed values of IG and IMO superior or equal to 2.5 and FR superior to 8.0 and, according tp these data, all tested cultivars were classified as susceptible. Meloidogyne javanica caused plant growth supression as measured by the values of fresh and dry weight of roots and the foliage of the plants, 39 days after inoculations. The average treatments containing low and high populational levels were satisfically different among themselves, thus proving its patogenic action on the cultivars evaluated.
Meloidogyne javanica; Raphanus sativus; pathogenicity; cultivar reaction
