Evaluation of maize top crosses under two nitrogen levels

Detalhes bibliográficos
Autor(a) principal: Guedes,Fernando Lisboa
Data de Publicação: 2011
Outros Autores: Souza,João Cândido de, Costa,Emiliano Fernandes Nassau, Reis,Matheus Costa dos, Cardoso,Gustavo Andrade, Ematné,Hugo Junqueira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência e Agrotecnologia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600011
Resumo: Maize crops in Brazil have a wide diversity of management systems. There is a large contingent of family agriculture, which uses little or no agricultural inputs, compared to the rural enterprise which uses the most modern production systems. This difference in the management systems is particularly noticeable in relation to consumption of fertilizers, especially nitrogenous ones. Therefore it is necessary to obtain plants with efficient nitrogen (N) use that also respond to applied nitrogen. Thus, the aim of the study was to evaluate the performance of S0:1 progenies, in top crosses, under two nitrogen levels and select the best ones based on responsiveness and efficiency. Sixty seven S0:1 progenies from populations of single cross hybrids were crossed with two testers (T1 - single cross hybrid; T2 - population per se). A hundred and thirty four hybrid progenies plus ten controls were evaluated in two field trials with different levels of nitrogen (one with average levels - 50 kg ha-1 of N - and the other with low levels of nitrogen - 25 kg ha-1 of N) in a 12 x 12 triple lattice design. It is possible to identify and to select progenies from commercial single cross hybrids that are efficient and responsive to nitrogen application. The non-additive effect was as important as the additive effect for grain yield under different nitrogen levels.
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spelling Evaluation of maize top crosses under two nitrogen levelsGenetic breedingZea maysS0:1 progeniestesterabiotic stressMaize crops in Brazil have a wide diversity of management systems. There is a large contingent of family agriculture, which uses little or no agricultural inputs, compared to the rural enterprise which uses the most modern production systems. This difference in the management systems is particularly noticeable in relation to consumption of fertilizers, especially nitrogenous ones. Therefore it is necessary to obtain plants with efficient nitrogen (N) use that also respond to applied nitrogen. Thus, the aim of the study was to evaluate the performance of S0:1 progenies, in top crosses, under two nitrogen levels and select the best ones based on responsiveness and efficiency. Sixty seven S0:1 progenies from populations of single cross hybrids were crossed with two testers (T1 - single cross hybrid; T2 - population per se). A hundred and thirty four hybrid progenies plus ten controls were evaluated in two field trials with different levels of nitrogen (one with average levels - 50 kg ha-1 of N - and the other with low levels of nitrogen - 25 kg ha-1 of N) in a 12 x 12 triple lattice design. It is possible to identify and to select progenies from commercial single cross hybrids that are efficient and responsive to nitrogen application. The non-additive effect was as important as the additive effect for grain yield under different nitrogen levels.Editora da UFLA2011-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600011Ciência e Agrotecnologia v.35 n.6 2011reponame:Ciência e Agrotecnologia (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLA10.1590/S1413-70542011000600011info:eu-repo/semantics/openAccessGuedes,Fernando LisboaSouza,João Cândido deCosta,Emiliano Fernandes NassauReis,Matheus Costa dosCardoso,Gustavo AndradeEmatné,Hugo Junqueiraeng2012-01-13T00:00:00Zoai:scielo:S1413-70542011000600011Revistahttp://www.scielo.br/cagroPUBhttps://old.scielo.br/oai/scielo-oai.php||renpaiva@dbi.ufla.br|| editora@editora.ufla.br1981-18291413-7054opendoar:2022-11-22T16:31:10.281141Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA)true
dc.title.none.fl_str_mv Evaluation of maize top crosses under two nitrogen levels
title Evaluation of maize top crosses under two nitrogen levels
spellingShingle Evaluation of maize top crosses under two nitrogen levels
Guedes,Fernando Lisboa
Genetic breeding
Zea mays
S0:1 progenies
tester
abiotic stress
title_short Evaluation of maize top crosses under two nitrogen levels
title_full Evaluation of maize top crosses under two nitrogen levels
title_fullStr Evaluation of maize top crosses under two nitrogen levels
title_full_unstemmed Evaluation of maize top crosses under two nitrogen levels
title_sort Evaluation of maize top crosses under two nitrogen levels
author Guedes,Fernando Lisboa
author_facet Guedes,Fernando Lisboa
Souza,João Cândido de
Costa,Emiliano Fernandes Nassau
Reis,Matheus Costa dos
Cardoso,Gustavo Andrade
Ematné,Hugo Junqueira
author_role author
author2 Souza,João Cândido de
Costa,Emiliano Fernandes Nassau
Reis,Matheus Costa dos
Cardoso,Gustavo Andrade
Ematné,Hugo Junqueira
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Guedes,Fernando Lisboa
Souza,João Cândido de
Costa,Emiliano Fernandes Nassau
Reis,Matheus Costa dos
Cardoso,Gustavo Andrade
Ematné,Hugo Junqueira
dc.subject.por.fl_str_mv Genetic breeding
Zea mays
S0:1 progenies
tester
abiotic stress
topic Genetic breeding
Zea mays
S0:1 progenies
tester
abiotic stress
description Maize crops in Brazil have a wide diversity of management systems. There is a large contingent of family agriculture, which uses little or no agricultural inputs, compared to the rural enterprise which uses the most modern production systems. This difference in the management systems is particularly noticeable in relation to consumption of fertilizers, especially nitrogenous ones. Therefore it is necessary to obtain plants with efficient nitrogen (N) use that also respond to applied nitrogen. Thus, the aim of the study was to evaluate the performance of S0:1 progenies, in top crosses, under two nitrogen levels and select the best ones based on responsiveness and efficiency. Sixty seven S0:1 progenies from populations of single cross hybrids were crossed with two testers (T1 - single cross hybrid; T2 - population per se). A hundred and thirty four hybrid progenies plus ten controls were evaluated in two field trials with different levels of nitrogen (one with average levels - 50 kg ha-1 of N - and the other with low levels of nitrogen - 25 kg ha-1 of N) in a 12 x 12 triple lattice design. It is possible to identify and to select progenies from commercial single cross hybrids that are efficient and responsive to nitrogen application. The non-additive effect was as important as the additive effect for grain yield under different nitrogen levels.
publishDate 2011
dc.date.none.fl_str_mv 2011-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600011
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1413-70542011000600011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Editora da UFLA
publisher.none.fl_str_mv Editora da UFLA
dc.source.none.fl_str_mv Ciência e Agrotecnologia v.35 n.6 2011
reponame:Ciência e Agrotecnologia (Online)
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Ciência e Agrotecnologia (Online)
collection Ciência e Agrotecnologia (Online)
repository.name.fl_str_mv Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv ||renpaiva@dbi.ufla.br|| editora@editora.ufla.br
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