Index selection of tropical maize genotypes for nitrogen use efficiency
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bragantia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200009 |
Resumo: | Nitrogen (N) limitation in maize crops is related to the fact that the efficiency of nitrogen fertilization in maize does not exceed 50%, primarily due to volatilization, denitrification and soil leaching. Therefore, the development of new nitrogen use efficient (NUE) cultivars is necessary. The aim of the present study was to develop indices for the accurate selection of NUE maize genotypes for use in conditions of both high and low N availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Federal University of Viçosa during October 2010. A total of 39 experimental hybrid combinations and 14 maize lines differing in NUE were evaluated under two N availability conditions. We determined the relative importance of the studied characters using principal component analysis, factor analysis and by developing efficient selection indices. We conclude that indirect and early selection of tropical maize genotypes can be performed using the indices I HN = 0.022 SDM + 0.35 RSDM + 0.35 RL A + 0.35 NUE for high N availability environments and I LN = -0.06 RSDM + 0.35 RSA A + 0.35 RL A + 0.39 SDM for low N availability environments. |
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Index selection of tropical maize genotypes for nitrogen use efficiencyabiotic stressNUEmaize improvementNitrogen (N) limitation in maize crops is related to the fact that the efficiency of nitrogen fertilization in maize does not exceed 50%, primarily due to volatilization, denitrification and soil leaching. Therefore, the development of new nitrogen use efficient (NUE) cultivars is necessary. The aim of the present study was to develop indices for the accurate selection of NUE maize genotypes for use in conditions of both high and low N availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Federal University of Viçosa during October 2010. A total of 39 experimental hybrid combinations and 14 maize lines differing in NUE were evaluated under two N availability conditions. We determined the relative importance of the studied characters using principal component analysis, factor analysis and by developing efficient selection indices. We conclude that indirect and early selection of tropical maize genotypes can be performed using the indices I HN = 0.022 SDM + 0.35 RSDM + 0.35 RL A + 0.35 NUE for high N availability environments and I LN = -0.06 RSDM + 0.35 RSA A + 0.35 RL A + 0.39 SDM for low N availability environments.Instituto Agronômico de Campinas2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200009Bragantia v.73 n.2 2014reponame:Bragantiainstname:Instituto Agronômico de Campinas (IAC)instacron:IAC10.1590/brag.2014.021info:eu-repo/semantics/openAccessGranato,Ítalo Stefanine CorreiaBermudez,Felipe PereiraReis,Gabriel Gonçalves dosDovale,Julio CésarMiranda,Glauco VieiraFritsche-Neto,Robertoeng2014-07-14T00:00:00Zoai:scielo:S0006-87052014000200009Revistahttps://www.scielo.br/j/brag/https://old.scielo.br/oai/scielo-oai.phpbragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br1678-44990006-8705opendoar:2014-07-14T00:00Bragantia - Instituto Agronômico de Campinas (IAC)false |
dc.title.none.fl_str_mv |
Index selection of tropical maize genotypes for nitrogen use efficiency |
title |
Index selection of tropical maize genotypes for nitrogen use efficiency |
spellingShingle |
Index selection of tropical maize genotypes for nitrogen use efficiency Granato,Ítalo Stefanine Correia abiotic stress NUE maize improvement |
title_short |
Index selection of tropical maize genotypes for nitrogen use efficiency |
title_full |
Index selection of tropical maize genotypes for nitrogen use efficiency |
title_fullStr |
Index selection of tropical maize genotypes for nitrogen use efficiency |
title_full_unstemmed |
Index selection of tropical maize genotypes for nitrogen use efficiency |
title_sort |
Index selection of tropical maize genotypes for nitrogen use efficiency |
author |
Granato,Ítalo Stefanine Correia |
author_facet |
Granato,Ítalo Stefanine Correia Bermudez,Felipe Pereira Reis,Gabriel Gonçalves dos Dovale,Julio César Miranda,Glauco Vieira Fritsche-Neto,Roberto |
author_role |
author |
author2 |
Bermudez,Felipe Pereira Reis,Gabriel Gonçalves dos Dovale,Julio César Miranda,Glauco Vieira Fritsche-Neto,Roberto |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Granato,Ítalo Stefanine Correia Bermudez,Felipe Pereira Reis,Gabriel Gonçalves dos Dovale,Julio César Miranda,Glauco Vieira Fritsche-Neto,Roberto |
dc.subject.por.fl_str_mv |
abiotic stress NUE maize improvement |
topic |
abiotic stress NUE maize improvement |
description |
Nitrogen (N) limitation in maize crops is related to the fact that the efficiency of nitrogen fertilization in maize does not exceed 50%, primarily due to volatilization, denitrification and soil leaching. Therefore, the development of new nitrogen use efficient (NUE) cultivars is necessary. The aim of the present study was to develop indices for the accurate selection of NUE maize genotypes for use in conditions of both high and low N availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Federal University of Viçosa during October 2010. A total of 39 experimental hybrid combinations and 14 maize lines differing in NUE were evaluated under two N availability conditions. We determined the relative importance of the studied characters using principal component analysis, factor analysis and by developing efficient selection indices. We conclude that indirect and early selection of tropical maize genotypes can be performed using the indices I HN = 0.022 SDM + 0.35 RSDM + 0.35 RL A + 0.35 NUE for high N availability environments and I LN = -0.06 RSDM + 0.35 RSA A + 0.35 RL A + 0.39 SDM for low N availability environments. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/brag.2014.021 |
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 |
Instituto Agronômico de Campinas |
publisher.none.fl_str_mv |
Instituto Agronômico de Campinas |
dc.source.none.fl_str_mv |
Bragantia v.73 n.2 2014 reponame:Bragantia instname:Instituto Agronômico de Campinas (IAC) instacron:IAC |
instname_str |
Instituto Agronômico de Campinas (IAC) |
instacron_str |
IAC |
institution |
IAC |
reponame_str |
Bragantia |
collection |
Bragantia |
repository.name.fl_str_mv |
Bragantia - Instituto Agronômico de Campinas (IAC) |
repository.mail.fl_str_mv |
bragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br |
_version_ |
1754193303749787648 |