Nitrogen-use efficiency of maize genotypes in contrasting environments.
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/491822 |
Resumo: | The purpose ofthis 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-l) and high (120 kg ha-J) 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 reductasefor this purposeJurther studies are needed on the reliability ofthis 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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Nitrogen-use efficiency of maize genotypes in contrasting environments.Chlorophyll contentLeafnitrogenYieldZea MaysnitrogenThe purpose ofthis 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-l) and high (120 kg ha-J) 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 reductasefor this purposeJurther studies are needed on the reliability ofthis 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.Amanda Oliveira Martins, UENF; Eliemar Campostrini, UENF; PAULO CESAR MAGALHAES, CNPMS; LAURO JOSE MOREIRA GUIMARAES, CNPMS; Frederico Ozanan Machado Durães, Embrapa Milho e Sorgo; IVANILDO EVODIO MARRIEL, CNPMS; Alena Torres Netto, UENF.MARTINS, A. O.CAMPOSTRINI, E.MAGALHAES, P. C.GUIMARAES, L. J. M.DURAES, F. O. M.MARRIEL, I. E.NETTO, A. T.2011-04-10T11:11:11Z2011-04-10T11:11:11Z2009-03-1020082018-05-23T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleCrop Breeding and Applied Biotechnology, Londrina, v. 8, n. 4, p. 291-298, 2008.http://www.alice.cnptia.embrapa.br/alice/handle/doc/491822enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T00:13:31Zoai:www.alice.cnptia.embrapa.br:doc/491822Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T00:13:31falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T00:13:31Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
title |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
spellingShingle |
Nitrogen-use efficiency of maize genotypes in contrasting environments. MARTINS, A. O. Chlorophyll content Leafnitrogen Yield Zea Mays nitrogen |
title_short |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
title_full |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
title_fullStr |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
title_full_unstemmed |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
title_sort |
Nitrogen-use efficiency of maize genotypes in contrasting environments. |
author |
MARTINS, A. O. |
author_facet |
MARTINS, A. O. CAMPOSTRINI, E. MAGALHAES, P. C. GUIMARAES, L. J. M. DURAES, F. O. M. MARRIEL, I. E. NETTO, A. T. |
author_role |
author |
author2 |
CAMPOSTRINI, E. MAGALHAES, P. C. GUIMARAES, L. J. M. DURAES, F. O. M. MARRIEL, I. E. NETTO, A. T. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Amanda Oliveira Martins, UENF; Eliemar Campostrini, UENF; PAULO CESAR MAGALHAES, CNPMS; LAURO JOSE MOREIRA GUIMARAES, CNPMS; Frederico Ozanan Machado Durães, Embrapa Milho e Sorgo; IVANILDO EVODIO MARRIEL, CNPMS; Alena Torres Netto, UENF. |
dc.contributor.author.fl_str_mv |
MARTINS, A. O. CAMPOSTRINI, E. MAGALHAES, P. C. GUIMARAES, L. J. M. DURAES, F. O. M. MARRIEL, I. E. NETTO, A. T. |
dc.subject.por.fl_str_mv |
Chlorophyll content Leafnitrogen Yield Zea Mays nitrogen |
topic |
Chlorophyll content Leafnitrogen Yield Zea Mays nitrogen |
description |
The purpose ofthis 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-l) and high (120 kg ha-J) 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 reductasefor this purposeJurther studies are needed on the reliability ofthis 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. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 2009-03-10 2011-04-10T11:11:11Z 2011-04-10T11:11:11Z 2018-05-23T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Crop Breeding and Applied Biotechnology, Londrina, v. 8, n. 4, p. 291-298, 2008. http://www.alice.cnptia.embrapa.br/alice/handle/doc/491822 |
identifier_str_mv |
Crop Breeding and Applied Biotechnology, Londrina, v. 8, n. 4, p. 291-298, 2008. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/491822 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503368852373504 |