Botão atualizar


Botão atualizar

Registro Completo
Biblioteca(s):  Biblioteca Rui Tendinha.
Data corrente:  14/01/2015
Data da última atualização:  14/01/2015
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  GAMA, E.E.G.e; HALLAUER, A.R.; FERRÃO, R. G.; BARBOSA, D.M.
Afiliação:  Romário Gava Ferrão, Incaper.
Título:  Heterosis in maize single crosses derived from a yellow Tuxpeño variety in Brazil.
Ano de publicação:  1995
Fonte/Imprenta:  Revista Brasileira de Genética, Ribeirão Preto v. 18, n. 1, p. 81-85, 1995.
Idioma:  Português
Conteúdo:  Most maize (Zea mays L.) crosses in Tropical regions use the heterotic pattern of Tupeno dent and Caribbean flint. Corsses between related lines are not used for commercial production. Related inbred lines are used in either double or three-way hybrids with other unrelated lines to develop superior hybrids. This study was conducted to determine the combining ability among 11 related inbred lines from a Tuxpeno population. The 11 inbred lines were crossed in a diallel series and were evaluated at six locations. A combinig ability analysis was made for grain yeild. The average yield across environments for the 55 single (44.8 q/ha) was not comparable to that of the single-cross hybrid (56.5 q/ha), induced as check. General combining ability (GCA) effects and specific combining ability (SCA) effects were highly significant (P < 0.01). Variation due to GCA, however, accounted for 68% of the variation among crosses. Indicating that additive genetic effects were more important than nonadditive effects. Highly significantly positive GCA effects were observed for lines 6 (2.44 q/ha) and 7 (6.40 q/ha) and highly significantly negative GCA effects for lines 5 (1.63 q/ha), 10 (2.64 q/ha), and 11 (4,01 q/ha). Significantly positive SCA effects were observed with line 4 x line 11, line 5 x line 9, and line 5 x 11 crosses. Lines 6 and 7 may have potential use as parents for three-way or double-cross hybrids.
Palavras-Chave:  Breeding; Heterose; Heterosis; Maize; Melhoramento; Milho; Zea mays.
Categoria do assunto:  --
URL:  http://biblioteca.incaper.es.gov.br/digital/bitstream/item/550/1/1995-Heterosis-in-Maize-Single-Crosses.pdf
Marc:  Mostrar Marc Completo
Registro original:  Biblioteca Rui Tendinha (BRT)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
BRT5014 - 1UMTAP - DD

Fechar


Botão atualizar


Botão atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados : 220
Primeira ... 34567891011 ... Última
Registros recuperados : 220
Primeira ... 34567891011 ... Última
Expressão de busca inválida. Verifique!!!
 
 

Embrapa Informática Agropecuária Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área Restrita

Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rurala>
Rua Afonso Sarlo, 160 - Bento Ferreira
Caixa Postal 29052-010 - Vitória, ES
TEL: (27) 3636-9888
biblioteca@incaper.es.gov.br

Valid HTML 4.01 Transitional