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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
17/06/2010 |
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Data da última atualização: |
04/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PARENTONI, S. N.; SOUZA JUNIOR, C. L. de; ALVES, V. M. C.; GAMA, E. E. G. e; COELHO, A. M.; OLIVEIRA, A. C. de; GUIMARAES, P. E. de O.; GUIMARAES, C. T.; VASCONCELOS, M. J. V. de; PACHECO, C. A. P.; MEIRELLES, W. F.; MAGALHAES, J. V. de; GUIMARAES, L. J. M.; SILVA, A. R. da; MENDES, F. F.; SCHAFFERT, R. E. |
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Afiliação: |
SIDNEY NETTO PARENTONI, CNPMS; CLAUDIO LOPES DE SOUZA JUNIOR, ESALQ; VERA MARIA CARVALHO ALVES, CNPMS; ELTO EUGENIO GOMES E GAMA, Pesquisador Aposentado CNPMS; ANTONIO MARCOS COELHO, CNPMS; ANTONIO CARLOS DE OLIVEIRA, CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS; CLAUDIA TEIXEIRA GUIMARAES, CNPMS; MARIA JOSE VILACA DE VASCONCELOS, CNPMS; CLESO ANTONIO PATTO PACHECO, CNPMS; WALTER FERNANDES MEIRELLES, CNPMS; JURANDIR VIEIRA DE MAGALHAES, CNPMS; LAURO JOSE MOREIRA GUIMARAES, CNPMS; ADELMO RESENDE DA SILVA, CNPMS; FLAVIA F. MENDES, UFLA; ROBERT EUGENE SCHAFFERT, CNPMS. |
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Título: |
Inheritance and breeding strategies for phosphorus efficiency in tropical maize (Zea mays L.). |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Maydica, Bergamo, v. 55, n. 1, p. 1-15, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
Information available from full cycle maize trials regarding the inheritance of phosphorus (P) efficiency in tropical maize is limited. This type of information is essential to establish selection strategies for these characteristics. The objective of this study was to investigate the inheritance and relationships between characteristics related to phosphorus efficiency in tropical maize. Six tropical maize lines with contrasting P efficiency and seven F1 crosses derived from these lines were used in this study. The parental lines, the F1'S, F2'S, BC1P1, BC1P2, BC2P1 and BC2P2 from each of the seven crosses were evaluated in three low P and two high P environments. Efficiency traits evaluated were: grain yield (GY), stover yield, (SY), grain P concentration (GPC), stover P concentration (SPC), P acquisition efficiency (PAE), P internal utilization efficiency (PUTlL), P harvest index (PHI) and the quotient of P utilization (QunL). Anther silk interval (ASO, which has been related to drought tolerance, was also determined. For each trait, the following paramelers were estimated: mean effect (m), additive effects (a), dominam effects (d) and epistatic digenic effects (aa, ad, dd). A 47% mean yield reduction was observed at the low P level compared with the high P level in the soil. Dominance effects and epistatic effects (when detected) were more important than additive effects for the majority of the traits studied. A low correlation for PAE was observed between low and high P environments, suggesting that different mechanisms of soil P acquisition occur in low and high P environments. For the PUTlL a high correlation was observed between low and high P environments, suggesting that similar plant internal mechanisms occur in both soil P leveis. A medium and negative correlation was observed between ASI and GY at low P environments. Our results suggest that the selection criteria adequate to select for P efficiency indude GY under low P environments to determine PAE under low P soils, and grain P concentrarion under high P environments to determine PUTIL. MenosInformation available from full cycle maize trials regarding the inheritance of phosphorus (P) efficiency in tropical maize is limited. This type of information is essential to establish selection strategies for these characteristics. The objective of this study was to investigate the inheritance and relationships between characteristics related to phosphorus efficiency in tropical maize. Six tropical maize lines with contrasting P efficiency and seven F1 crosses derived from these lines were used in this study. The parental lines, the F1'S, F2'S, BC1P1, BC1P2, BC2P1 and BC2P2 from each of the seven crosses were evaluated in three low P and two high P environments. Efficiency traits evaluated were: grain yield (GY), stover yield, (SY), grain P concentration (GPC), stover P concentration (SPC), P acquisition efficiency (PAE), P internal utilization efficiency (PUTlL), P harvest index (PHI) and the quotient of P utilization (QunL). Anther silk interval (ASO, which has been related to drought tolerance, was also determined. For each trait, the following paramelers were estimated: mean effect (m), additive effects (a), dominam effects (d) and epistatic digenic effects (aa, ad, dd). A 47% mean yield reduction was observed at the low P level compared with the high P level in the soil. Dominance effects and epistatic effects (when detected) were more important than additive effects for the majority of the traits studied. A low correlation for PAE was observed between low and high P... Mostrar Tudo |
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Thesagro: |
Fósforo; Melhoramento; Milho. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03069naa a2200337 a 4500
001 1855391
005 2018-06-04
008 2010 bl uuuu u00u1 u #d
100 1 $aPARENTONI, S. N.
245 $aInheritance and breeding strategies for phosphorus efficiency in tropical maize (Zea mays L.).$h[electronic resource]
260 $c2010
520 $aInformation available from full cycle maize trials regarding the inheritance of phosphorus (P) efficiency in tropical maize is limited. This type of information is essential to establish selection strategies for these characteristics. The objective of this study was to investigate the inheritance and relationships between characteristics related to phosphorus efficiency in tropical maize. Six tropical maize lines with contrasting P efficiency and seven F1 crosses derived from these lines were used in this study. The parental lines, the F1'S, F2'S, BC1P1, BC1P2, BC2P1 and BC2P2 from each of the seven crosses were evaluated in three low P and two high P environments. Efficiency traits evaluated were: grain yield (GY), stover yield, (SY), grain P concentration (GPC), stover P concentration (SPC), P acquisition efficiency (PAE), P internal utilization efficiency (PUTlL), P harvest index (PHI) and the quotient of P utilization (QunL). Anther silk interval (ASO, which has been related to drought tolerance, was also determined. For each trait, the following paramelers were estimated: mean effect (m), additive effects (a), dominam effects (d) and epistatic digenic effects (aa, ad, dd). A 47% mean yield reduction was observed at the low P level compared with the high P level in the soil. Dominance effects and epistatic effects (when detected) were more important than additive effects for the majority of the traits studied. A low correlation for PAE was observed between low and high P environments, suggesting that different mechanisms of soil P acquisition occur in low and high P environments. For the PUTlL a high correlation was observed between low and high P environments, suggesting that similar plant internal mechanisms occur in both soil P leveis. A medium and negative correlation was observed between ASI and GY at low P environments. Our results suggest that the selection criteria adequate to select for P efficiency indude GY under low P environments to determine PAE under low P soils, and grain P concentrarion under high P environments to determine PUTIL.
650 $aFósforo
650 $aMelhoramento
650 $aMilho
700 1 $aSOUZA JUNIOR, C. L. de
700 1 $aALVES, V. M. C.
700 1 $aGAMA, E. E. G. e
700 1 $aCOELHO, A. M.
700 1 $aOLIVEIRA, A. C. de
700 1 $aGUIMARAES, P. E. de O.
700 1 $aGUIMARAES, C. T.
700 1 $aVASCONCELOS, M. J. V. de
700 1 $aPACHECO, C. A. P.
700 1 $aMEIRELLES, W. F.
700 1 $aMAGALHAES, J. V. de
700 1 $aGUIMARAES, L. J. M.
700 1 $aSILVA, A. R. da
700 1 $aMENDES, F. F.
700 1 $aSCHAFFERT, R. E.
773 $tMaydica, Bergamo$gv. 55, n. 1, p. 1-15, 2010.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Trigo. |
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Data corrente: |
31/01/2011 |
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Data da última atualização: |
16/03/2015 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
MACHADO, J. R. de A.; GUIMARAES, L. J. M.; GUIMARAES, P. E. O.; PACHECO, C. A. P.; MEIRELLES, W. F.; PARENTONI, S. N.; SILVA, A. R. da; EMYGDIO, B. M.; TEIXEIRA, M. C. C. |
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Afiliação: |
JANE RODRIGUES DE ASSIS MACHADO, CNPMS; LAURO JOSE MOREIRA GUIMARAES, CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS; CLESO ANTONIO PATTO PACHECO, CNPMS; WALTER FERNANDES MEIRELLES, CNPMS; SIDNEY NETTO PARENTONI, CNPMS; ADELMO RESENDE DA SILVA, CNPMS; BEATRIZ MARTI EMYGDIO, CPACT; MAURO CESAR CELARO TEIXEIRA, CNPT. |
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Título: |
Adaptabilidade e estabilidade de híbridos de milho para região subtropical via modelos mistos. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 2010. |
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Série: |
(Embrapa Milho e Sorgo. Boletim de Pesquisa e Desenvolvimento, 25). |
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Idioma: |
Português |
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Conteúdo: |
O Ensaio Elite Sul vem sendo conduzido desde a década de 90 em vários locais representativos da região subtropical. O objetivo desse trabalho foi avaliar o desempenho, a adaptabilidade e a estabilidade de híbridos de milho avaliados no ensaio Elite Sul pela metodologia de modelos mistos. Os ensaios foram em 15 ambientes com número variável de tratamentos. Todos em delineamento látice, com duas linhas de cinco metros, espaçamento entre linhas de 0,80m e duas repetições. Para as análises de adaptabilidade e estabilidade, foram utilizados os dados de rendimento de grão, corrigidos para 13% de umidade, e aplicada a metodologia de Modelos Lineares Mistos seguindo o modelo 52 do software SELEGEN-REML/BLUP. Considerando-se os valores genotípicos e capitalizando-se a interação média entre genótipos e ambiente (u+g+ge) os híbridos Maximus, 1I1002, 1I998, 2F633 5 e 1G748 5 foram os melhores. Houve completa concordância na seleção dos cinco híbridos de melhor desempenho, entre os valores genotípicos e MHPRVG (medida concomitante de produtividade, adaptabilidade e estabilidade). |
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Thesagro: |
Melhoramento Genético Vegetal; Milho; Zea Mays. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/26262/1/Bol-25.pdf
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Marc: |
LEADER 01923nam a2200253 a 4500
001 1875042
005 2015-03-16
008 2010 bl uuuu u0uu1 u #d
100 1 $aMACHADO, J. R. de A.
245 $aAdaptabilidade e estabilidade de híbridos de milho para região subtropical via modelos mistos.$h[electronic resource]
260 $aSete Lagoas: Embrapa Milho e Sorgo$c2010
490 $a(Embrapa Milho e Sorgo. Boletim de Pesquisa e Desenvolvimento, 25).
520 $aO Ensaio Elite Sul vem sendo conduzido desde a década de 90 em vários locais representativos da região subtropical. O objetivo desse trabalho foi avaliar o desempenho, a adaptabilidade e a estabilidade de híbridos de milho avaliados no ensaio Elite Sul pela metodologia de modelos mistos. Os ensaios foram em 15 ambientes com número variável de tratamentos. Todos em delineamento látice, com duas linhas de cinco metros, espaçamento entre linhas de 0,80m e duas repetições. Para as análises de adaptabilidade e estabilidade, foram utilizados os dados de rendimento de grão, corrigidos para 13% de umidade, e aplicada a metodologia de Modelos Lineares Mistos seguindo o modelo 52 do software SELEGEN-REML/BLUP. Considerando-se os valores genotípicos e capitalizando-se a interação média entre genótipos e ambiente (u+g+ge) os híbridos Maximus, 1I1002, 1I998, 2F633 5 e 1G748 5 foram os melhores. Houve completa concordância na seleção dos cinco híbridos de melhor desempenho, entre os valores genotípicos e MHPRVG (medida concomitante de produtividade, adaptabilidade e estabilidade).
650 $aMelhoramento Genético Vegetal
650 $aMilho
650 $aZea Mays
700 1 $aGUIMARAES, L. J. M.
700 1 $aGUIMARAES, P. E. O.
700 1 $aPACHECO, C. A. P.
700 1 $aMEIRELLES, W. F.
700 1 $aPARENTONI, S. N.
700 1 $aSILVA, A. R. da
700 1 $aEMYGDIO, B. M.
700 1 $aTEIXEIRA, M. C. C.
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Embrapa Milho e Sorgo (CNPMS) |
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