Reação de cultivares do feijoeiro comum às podridões radiculares causadas por Rhizoctonia solani E Fusarium solani f. sp. phaseoli
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Data
2007-12
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Editor
João Batista Duarte
Resumo
Rhizoctonia solani Kuhn is a necrotrophic fungus and
soil inhabitant that attacks great number of vegetable species. In
bean plants, R. solani can induce different symptoms including
toppling, root and colon plant rottenness. Fusarium solani (Mart)
Sacc. f. sp. phaseoli (Burcholder) occurs in practically all bean
producing areas in Brazil and can cause root rots and death to
bean plants. This study evaluated the reaction of commercial
common bean cultivars growing in R. solani or F. solani f. sp.
phaseoli infested soil, under green house conditions. The
experimental design was entirely randomized, with 24 treatments
and four replications. A Oxisol was infested with triturated
sorghum grains that were previously colonized by R. solani (1.0
g/1.4 L of soil) or F. solani f. sp phaseoli (8.0 g/1.4 L of soil). The
disease evaluations were accomplished 21 days after planting.
All plants were carefully removed, their root systems were
washed in running water and the disease severity was evaluated
according to Abawi & Pastor-Corrales (1990) scale for disease
severity. The cultivar behavior ranged according to the inoculated
pathogen, all cultivars were susceptible with different degrees of
susceptibility. Among evaluated common bean cultivars Pérola
was less susceptible to R. solani, and Radiante was less
susceptible to F. solani f. sp. phaseoli.
Descrição
Palavras-chave
Phaseolus vulgaris, Patógenos de raiz, Resistance, Soil pathogen
Citação
MIRANDA, Braycia Afonso de; LOBO JÚNIOR, Murillo; CUNHA, Marcos Gomes. Reação de cultivares do feijoeiro comum às podridões radiculares causadas por Rhizoctonia solani E Fusarium solani f. sp. phaseol. Pesquisa Agropecuária Tropical, Goiânia, v. 37, n.4, p. 221-226, out./dez. 2007. Disponível em: <https://www.revistas.ufg.br/pat/article/view/3080/3124>.