Data/hora: 21/06/2024 18:52:36

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 09/06/1998
Data da última atualização: | 09/06/1998
Autoria: | SOAVE, J.; PIZZINATTO, M. A.; USBERTI JUNIOR, J. A.; CAMARGO, O. B. A.; VILLELA, O. V.
Título: | Selection of rice cultivars resistant to some pathogens using seed health testing.
Ano de publicação: | 1984
Fonte/Imprenta: | Pesquisa Agropecuaria Brasileira, Brasilia, v.19, n.4, p. 449-453, abr. 1984.
Idioma: | Inglês
Conteúdo: | Thirty-six lowland rice (Oryza sativa L.) progenies have been tested in yield trials aiming at determining the most important seed-borne fungi and the progeny performance as to each of the pathogens found in seeds, with special emphasis on seed discoloration and consequent seed weight loss. Significant progeny differences as to seven seed-born fungi have been found; however, as far as seed discoloration and consequent seed weight loss are concerned, Rhynchosporium oryzae, Phoma spp., Trichoconis padwickii and Helminthosporium oryzae have been the most important pathogens. Seven progenies outperformed IAC-899 (commercial variety used as control) regarding all the parameters analysed. It is concluded that seed health testing is an effective complementary tool in selecting rice germplasms with lower seed-borne fungal incidence.
Palavras-Chave: | Patologia de sementes; Resistance.
Thesagro: | Oryza Sativa; Resistência.
Thesaurus Nal: | seed pathology.
Categoria do assunto: | --
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (19891-1) - UMT - AP - -- - 630.72081 - P474 - 63072081 - DIS