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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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Registro Completo
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
14/03/2013 |
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Data da última atualização: |
14/03/2013 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CELANT, T. M. B.; DALMEDICO, G.; SCHMIDT, G. S.; ARRIECHE, C. A.; ZANOTTO, M. M. T.; FRACASSO, V.; ZIMMER, L. E.; KLEIN, C. H. |
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Afiliação: |
TANIA MARIA BIAVATTI CELANT, CNPSA; GEORDANO DALMEDICO, CNPSA; GILBERTO SILBER SCHMIDT, SRI; CLAUDIA ANTUNEZ ARRIECHE, CNPSA; MARCIA MARA TESSMANN ZANOTTO, CNPSA; VIVIAN FRACASSO, CNPSA; LORIEN ELIANE ZIMMER, CNPSA; CLAUDETE HARA KLEIN, CNPSA. |
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Título: |
Informatização do Processo de Trâmite de Publicações - InfoCLP. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: WORKSHOP DO PROJETO ISOEMBRAPA, 2012, Jaguariúna. Modelos de excelência e compartilhamento de boas práticas de gestão: anais... Jaguariúna: Embrapa Meio Ambiente, 2012. 1 CD ROM. |
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Idioma: |
Português |
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Notas: |
Projeto/Plano de Ação: 11.11.11.111. |
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Palavras-Chave: |
InfoCLP; Informatização. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/79030/1/original6755.pdf
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Marc: |
LEADER 00800nam a2200217 a 4500
001 1952992
005 2013-03-14
008 2012 bl uuuu u00u1 u #d
100 1 $aCELANT, T. M. B.
245 $aInformatização do Processo de Trâmite de Publicações - InfoCLP.$h[electronic resource]
260 $aIn: WORKSHOP DO PROJETO ISOEMBRAPA, 2012, Jaguariúna. Modelos de excelência e compartilhamento de boas práticas de gestão: anais... Jaguariúna: Embrapa Meio Ambiente, 2012. 1 CD ROM.$c2012
500 $aProjeto/Plano de Ação: 11.11.11.111.
653 $aInfoCLP
653 $aInformatização
700 1 $aDALMEDICO, G.
700 1 $aSCHMIDT, G. S.
700 1 $aARRIECHE, C. A.
700 1 $aZANOTTO, M. M. T.
700 1 $aFRACASSO, V.
700 1 $aZIMMER, L. E.
700 1 $aKLEIN, C. H.
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