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| Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
06/11/2008 |
Data da última atualização: |
24/05/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MIRANDA, G. V.; SOUZA, L. V de; GALVÃO, J. C. C.; GUIMARAES, L. J. M.; MELO, A. V. de; SANTOS, I. C. dos. |
Afiliação: |
Glauco Vieira Miranda, UFV; Leandro Vagno de Souza, UFV; João Carlos Cardoso Galvão, UFV; LAURO JOSE MOREIRA GUIMARAES, CNPMS; Aurélio Vaz de Melo, EPAMIG; Isabel Crisitna dos Santos, EPAMIG. |
Título: |
Genetic variability and heterotic groups of Brazilian popcorn populations. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Euphytica, Wageningen, v. 162, n. 3, p. 431-440, 2008. |
DOI: |
10.1007/s10681-007-9598-9 |
Idioma: |
Inglês |
Conteúdo: |
The development of successful advanced lines and cultivars in maize is dependent on parental selection and assignment to defined heterotic groups. So, the objectives of this study were to evaluate genetic variability and identify heterotic groups among Brazilian popcorn varieties. Thus, diallel crosses of advanced generations of the popcorn hybrids, IAC 112 and Zélia, and of three open-pollinated popcorn varieties, RS 20, Branco, and SAM were performed. Ten hybrid combinations, the five parents, and five check treatments were arranged in a block design with four replicates in two tropical-zone locations (CWb climate). Both additive and non-additive effects were important for grain yield, plant height, ear height, and husk cover. For popping expansion, only the additive effects were important. Hybrid combinations between the local variety (Branco) and F2 populations (IAC 112 and Zelia) resulted in the third and fourth highest values for popping expansion. The best grain yields were obtained with hybrid combinations involving SAM. Cultivars Zélia, IAC 112, and RS 20 increased popping expansion, whereas cultivar Branco increased grain yield of hybrid combinations. The following conclusions may be drawn: Brazilian popcorn populations have reduced heterosis and genetic variability to popping expansion in relation commercial cultivars; there is genetic variability among Brazilian popcorn populations that allows the exploitation of additive and non-additive effects for grain yield; it is possible to increase grain yield by using local varieties; but it would be difficult to obtain commercial hybrids from local varieties because they have poor performance for popping expansion MenosThe development of successful advanced lines and cultivars in maize is dependent on parental selection and assignment to defined heterotic groups. So, the objectives of this study were to evaluate genetic variability and identify heterotic groups among Brazilian popcorn varieties. Thus, diallel crosses of advanced generations of the popcorn hybrids, IAC 112 and Zélia, and of three open-pollinated popcorn varieties, RS 20, Branco, and SAM were performed. Ten hybrid combinations, the five parents, and five check treatments were arranged in a block design with four replicates in two tropical-zone locations (CWb climate). Both additive and non-additive effects were important for grain yield, plant height, ear height, and husk cover. For popping expansion, only the additive effects were important. Hybrid combinations between the local variety (Branco) and F2 populations (IAC 112 and Zelia) resulted in the third and fourth highest values for popping expansion. The best grain yields were obtained with hybrid combinations involving SAM. Cultivars Zélia, IAC 112, and RS 20 increased popping expansion, whereas cultivar Branco increased grain yield of hybrid combinations. The following conclusions may be drawn: Brazilian popcorn populations have reduced heterosis and genetic variability to popping expansion in relation commercial cultivars; there is genetic variability among Brazilian popcorn populations that allows the exploitation of additive and non-additive effects for grain yield;... Mostrar Tudo |
Palavras-Chave: |
Local variety; Maize; Popping expansion. |
Thesagro: |
Zea Mays. |
Thesaurus Nal: |
breeding; heterosis. |
Categoria do assunto: |
G Melhoramento Genético |
Marc: |
LEADER 02450naa a2200265 a 4500 001 1491590 005 2018-05-24 008 2008 bl uuuu u00u1 u #d 024 7 $a10.1007/s10681-007-9598-9$2DOI 100 1 $aMIRANDA, G. V. 245 $aGenetic variability and heterotic groups of Brazilian popcorn populations.$h[electronic resource] 260 $c2008 520 $aThe development of successful advanced lines and cultivars in maize is dependent on parental selection and assignment to defined heterotic groups. So, the objectives of this study were to evaluate genetic variability and identify heterotic groups among Brazilian popcorn varieties. Thus, diallel crosses of advanced generations of the popcorn hybrids, IAC 112 and Zélia, and of three open-pollinated popcorn varieties, RS 20, Branco, and SAM were performed. Ten hybrid combinations, the five parents, and five check treatments were arranged in a block design with four replicates in two tropical-zone locations (CWb climate). Both additive and non-additive effects were important for grain yield, plant height, ear height, and husk cover. For popping expansion, only the additive effects were important. Hybrid combinations between the local variety (Branco) and F2 populations (IAC 112 and Zelia) resulted in the third and fourth highest values for popping expansion. The best grain yields were obtained with hybrid combinations involving SAM. Cultivars Zélia, IAC 112, and RS 20 increased popping expansion, whereas cultivar Branco increased grain yield of hybrid combinations. The following conclusions may be drawn: Brazilian popcorn populations have reduced heterosis and genetic variability to popping expansion in relation commercial cultivars; there is genetic variability among Brazilian popcorn populations that allows the exploitation of additive and non-additive effects for grain yield; it is possible to increase grain yield by using local varieties; but it would be difficult to obtain commercial hybrids from local varieties because they have poor performance for popping expansion 650 $abreeding 650 $aheterosis 650 $aZea Mays 653 $aLocal variety 653 $aMaize 653 $aPopping expansion 700 1 $aSOUZA, L. V de 700 1 $aGALVÃO, J. C. C. 700 1 $aGUIMARAES, L. J. M. 700 1 $aMELO, A. V. de 700 1 $aSANTOS, I. C. dos 773 $tEuphytica, Wageningen$gv. 162, n. 3, p. 431-440, 2008.
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Embrapa Milho e Sorgo (CNPMS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
20/02/2013 |
Data da última atualização: |
20/02/2013 |
Autoria: |
PEREIRA, C. R.; MACHADO, A. B. N.; NOBREGA, A. R. da. |
Afiliação: |
CAROLINA RODRIGUES PEREIRA, CNPGL; ADRIANA BRANDAO NASCIMENTO MACHADO, CNPC; ADILSON RODRIGUES DA NOBREGA, CNPC. |
Título: |
Tecnologias da Embrapa Caprinos e Ovinos. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
O Berro, Uberaba, n. 153, p. 135-141, mar., 2012. |
Idioma: |
Português |
Notas: |
Suplemento Anuário Brasileiro de Caprinos & Ovinos - 2012 |
Palavras-Chave: |
Embrapa Caprinos e Ovinos. |
Thesagro: |
Caprinocultura; Instituição de Pesquisa; Ovinocultura; Tecnologia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00612naa a2200205 a 4500 001 1950249 005 2013-02-20 008 2012 bl uuuu u00u1 u #d 100 1 $aPEREIRA, C. R. 245 $aTecnologias da Embrapa Caprinos e Ovinos. 260 $c2012 500 $aSuplemento Anuário Brasileiro de Caprinos & Ovinos - 2012 650 $aCaprinocultura 650 $aInstituição de Pesquisa 650 $aOvinocultura 650 $aTecnologia 653 $aEmbrapa Caprinos e Ovinos 700 1 $aMACHADO, A. B. N. 700 1 $aNOBREGA, A. R. da 773 $tO Berro, Uberaba$gn. 153, p. 135-141, mar., 2012.
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