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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
03/06/2009 |
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Data da última atualização: |
30/11/2010 |
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Autoria: |
MARTINS, A. O; COMPOSTRINI, E.; MAGALHÃES, P. C.; GUIMARÃES, L. J. M.; DURÃES, F. O. M.; MARRIEL, I. E.; TORRES NETTO, A. |
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Afiliação: |
AMANDA OLIVEIRA MARTINS, UENF/CCTA/LMGV; ELIEMAR CAMPOSTRINI, UENF/CCTA/LMGV; PAULO CESAR MAGALHÃES, CNPMS; LAURO JOSÉ MOREIRA GUIMARÃES, CNPMS; FREDERICO OZANAN MACHADO DURÃES, CNPAE; IVANILDO EVÓDIO MARRIEL, CNPMS; ALENA TORRES NETTO, UENF/CCTA/LMGV. |
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Título: |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 8, n. 4, p. 291-298, Dec. 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
The purpose of this study was to evaluate the nitrogen-use efficiency of 15 corn hybrids in different environments. The experiment was conducted at the research station Embrapa Milho e Sorgo, in environments with low (12 kg ha-1) and high (120 kg ha -1) nitrogen fertilization, in a randomized block design with three replications. The chlorophyll content, leaf nitrogen and nitrate reductase activity in the flag leaf were determined at flowering and the grain yield was evaluated at harvest. The chlorophyll content proved to be sensitive to nitrogen availability, although without discriminating genotypic differences efficiently. To use nitrate reductase for this purpose, further studies are needed on the reliability of this biochemical variable to diagnose genotypes efficient in N use precociously. The hybrid L2xL3 was considered promising for maize breeding programs aimed at gene introgression related to N-use efficiency. |
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Palavras-Chave: |
Adubação nitrogenada; Nitrogênio foliar; Teor de clorofila; Zea mays L. |
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Thesagro: |
Agricultura; Biotecnologia; Genética; Milho; Produtividade. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 01785naa a2200301 a 4500
001 1049163
005 2010-11-30
008 2008 bl uuuu u00u1 u #d
100 1 $aMARTINS, A. O
245 $aNitrogen-use efficiency of maize genotypes in contrasting environments.
260 $c2008
520 $aThe purpose of this study was to evaluate the nitrogen-use efficiency of 15 corn hybrids in different environments. The experiment was conducted at the research station Embrapa Milho e Sorgo, in environments with low (12 kg ha-1) and high (120 kg ha -1) nitrogen fertilization, in a randomized block design with three replications. The chlorophyll content, leaf nitrogen and nitrate reductase activity in the flag leaf were determined at flowering and the grain yield was evaluated at harvest. The chlorophyll content proved to be sensitive to nitrogen availability, although without discriminating genotypic differences efficiently. To use nitrate reductase for this purpose, further studies are needed on the reliability of this biochemical variable to diagnose genotypes efficient in N use precociously. The hybrid L2xL3 was considered promising for maize breeding programs aimed at gene introgression related to N-use efficiency.
650 $aAgricultura
650 $aBiotecnologia
650 $aGenética
650 $aMilho
650 $aProdutividade
653 $aAdubação nitrogenada
653 $aNitrogênio foliar
653 $aTeor de clorofila
653 $aZea mays L
700 1 $aCOMPOSTRINI, E.
700 1 $aMAGALHÃES, P. C.
700 1 $aGUIMARÃES, L. J. M.
700 1 $aDURÃES, F. O. M.
700 1 $aMARRIEL, I. E.
700 1 $aTORRES NETTO, A.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 8, n. 4, p. 291-298, Dec. 2008.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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| Registros recuperados : 2 | |
| 1. |  | ARAUJO, G. G. L. de; ARAÚJO, C. de A.; GOIS, G. C.; MAGALHÃES, A. L. R.; NOVAES, J. J. da S.; RODRIGUES, J. M. da C. da S; GUIMARÃES, Y. S. R.; PERAZZO, A. F.; SILVA, T. G. F. da; SANTOS, E. M. dos; CAMPOS, F. S. Fermentation profile, aerobic stability, chemical and mineral composition of silages of mango combined with cocoa pod husk meal. Brazilian Journal of Veterinary Research and Animal Science, v. 59, e194267, 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Semiárido. |
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| 2. | | ARAÚJO, C. de A.; PINTO, M. de S.; OLIVEIRA, G. F. de; RODRIGUES, J. M. da C. da S.; CUNHA, D. de S.; COSTA, C. de J. P.; MELO, D. A. de S.; MAGALHÃES, A. L. R.; ARAUJO, G. G. L. de; CAMPOS, F. S.; GOIS, G. C. Nutritional properties and in vitro gas production in cactus pear (Opuntia stricta) and cassava (Manihot esculenta) shoot silages. African Journal of Range & Forage Science, Mar. 2023. On line.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 3 |
| Biblioteca(s): Embrapa Semiárido. |
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| Registros recuperados : 2 | |
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