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Monalize Salete Mota ; Fernando Irajá Félix de Carvalho ; Antonio Costa de Oliveira ;Pesquisa Agropecuária Tropical 2014, 44 3

Author: Cley Donizeti Martins Nunes

Source: http://www.redalyc.org/


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Pesquisa Agropecuária Tropical ISSN: 1517-6398 pat@agro.ufg.br Escola de Agronomia e Engenharia de Alimentos Brasil Martins Nunes, Cley Donizeti; Salete Mota, Monalize; Irajá Félix de Carvalho, Fernando; Costa de Oliveira, Antonio Variabilidade de Pyricularia oryzae Cav.
em genótipos de arroz Pesquisa Agropecuária Tropical, vol.
44, núm.
3, julio-septiembre, 2014, pp.
263-270 Escola de Agronomia e Engenharia de Alimentos Goiânia, Brasil Disponível em: http:--www.redalyc.org-articulo.oa?id=253032129013 Como citar este artigo Número completo Mais artigos Home da revista no Redalyc Sistema de Informação Científica Rede de Revistas Científicas da América Latina, Caribe , Espanha e Portugal Projeto acadêmico sem fins lucrativos desenvolvido no âmbito da iniciativa Acesso Aberto e-ISSN 1983-4063 - www.agro.ufg.br-pat - Pesq.
Agropec.
Trop., Goiânia, v.
44, n.
3, p.
263-270, jul.-set.
2014 Variabilidade de Pyricularia oryzae Cav.
em genótipos de arroz1 Cley Donizeti Martins Nunes2, Monalize Salete Mota3, Fernando Irajá Félix de Carvalho3, Antonio Costa de Oliveira3 ABSTRACT Variability of Pyricularia oryzae Cav. in irrigated rice genotypes Rice blast, caused by the fungus Pyricularia oryzae Cav., is one of the most important diseases of rice.
The understanding of its different strains allows a more efficient breeding towards resistant cultivars.
This work aimed to determine the variability of the fungus and the prevalence of strains in irrigated rice genotypes, to evaluate the reaction of near isogenic lines of CO 39 to the collected P.
oryzae isolates and to identify rice genotypes having complementary resistance genes to these isolates.
The study was performed with 36 P.
oryzae isolates collected in 18 irrigated rice cultivars from four counties in Rio Grande do Sul State, Brazil.
A total of 21 strains were identified, with a prevalence for the IA group strains, in all collection sites, especially the IA-1 strain.
A resistance reaction was obs...





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