Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea.
Autores:  PRABHU, A.S.
CASTRO, E. da M. de
ARAÚJO, L.G. de
BERNI, R.F.
Data:  2003-04-22
Ano:  2003
Palavras-chave:  Oryza sativa
Pathotypes
Physiologic races
Rice blast
Inoculation methods
Patótipos
Raças fisiológicas
Brusone
Métodos de inoculação
Resumo:  The objective of this work was to evaluate the resistance spectra of six elite breeding lines of rice, developed for improved yield and grain quality, in inoculation tests in the greenhouse and in the field. Forty-six isolates of Pyricularia grisea collected from the cultivar Primavera, 31 from the cultivar Maravilha and 19 from six elite breeding lines, totaling 96 were utilized for inoculations. Out of 11 international and 15 Brazilian pathotypes, IC-1, IB-9, and BD-16, respectively, were identified as most frequent isolates collected from the cultivar Primavera. The isolates retrieved from Maravilha belong to four international and 11 Brazilian pathotypes, the predominant ones being IB-9 and IB-49 and BB-1 and BB-21, respectively. Lines CNAs 8711 and CNAs 8983 showed resistant reaction to all test isolates from Maravilha, while CNAs 8983 was susceptible to three isolates of Primavera pertaining to the pathotype IC-1. A majority of isolates exhibiting compatible reaction to Primavera were incompatible to Maravilha and vice-versa. Field assessment of rice blast utilizing the area under disease progress curve as a criterion for measuring disease severity showed significant differences among the six breeding lines. The isolates of P. grisea exhibiting differential reaction on breeding lines can be utilized in pyramiding resistance genes in new upland rice cultivars.

2003
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  24390

http://www.alice.cnptia.embrapa.br/handle/doc/108898

http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/24390/1/203.pdf
Editor:  Pesquisa Agropecuária Brasileira, Brasília, v. 38, nº 2, p.203-210, fev. 2003.
Relação:  Área de Informação da Sede - Artigo em periódico indexado (ALICE)
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional