Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn

Detalhes bibliográficos
Autor(a) principal: Morais, Pedro Patric Pinho
Data de Publicação: 2018
Outros Autores: Sousa, Massaine Bandeira e, Galli, Giovanni, Andrade, Luciano Rogério Braatz e, Fritsche-Neto, Roberto, Oliveira, Aluízio Borém de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/25308
Resumo: The objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not promising for this purpose, since NUE should be estimated taking grain yield into account. However, indirect selection for NUE can be performed via number of ears or using the selection index considering number and weight of ears.
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spelling Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in cornComponentes de produção e caracteres reprodutivos, fisiológicos e de raiz usados na seleção precoce para eficiência do uso de nitrogênio em milhoZea mays; abiotic stress; GBlup; indirect selection; path analysis; selection indexZea mays; estresse abiótico; GBlup; seleção indireta; análise de trilha; índice de seleçãoThe objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not promising for this purpose, since NUE should be estimated taking grain yield into account. However, indirect selection for NUE can be performed via number of ears or using the selection index considering number and weight of ears.O objetivo deste trabalho foi examinar a possibilidade de usar componentes de produção e caracteres reprodutivos, fisiológicos e de raiz na seleção precoce para eficiência de uso de nitrogênio (EUN) em milho. Foram avaliadas 64 linhagens em dois regimes de adubação nitrogenada: ideal e baixo. As avaliações foram feitas em três estádios fenológicos: oito folhas completamente expandidas, florescimento masculino e maturação fisiológica. É possível selecionar linhagens superiores quanto à EUN, mas os componentes de produção não tiveram comportamento diferencial sob os diferentes níveis de nitrogênio avaliados. Os caracteres radiculares, reprodutivos e fisiológicos não se mostraram confiáveis para seleção precoce de linhagens de milho com elevada EUN. De forma semelhante, os estádios de oito folhas e de florescimento masculino não se mostraram promissores para esse propósito, uma vez que, para a estimação da EUN, deve-se levar em consideração a produção de grãos. Entretanto, a seleção indireta para EUN pode ser feita via número de espigas ou com o uso de índice de seleção que considere número e peso de espigas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPioneer Hi-bred InternationalFundação de Amparo à Pesquisa do Estado de São Paulo (Fapesp, number 2013/24135-2)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes)Morais, Pedro Patric PinhoSousa, Massaine Bandeira eGalli, GiovanniAndrade, Luciano Rogério Braatz eFritsche-Neto, RobertoOliveira, Aluízio Borém de2018-08-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/25308Pesquisa Agropecuaria Brasileira; v.53, n.5, May 2018; 633-640Pesquisa Agropecuária Brasileira; v.53, n.5, May 2018; 633-6401678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/25308/14210https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25308/17074https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25308/17075Direitos autorais 2018 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2018-08-13T13:38:43Zoai:ojs.seer.sct.embrapa.br:article/25308Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2018-08-13T13:38:43Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
Componentes de produção e caracteres reprodutivos, fisiológicos e de raiz usados na seleção precoce para eficiência do uso de nitrogênio em milho
title Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
spellingShingle Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
Morais, Pedro Patric Pinho
Zea mays; abiotic stress; GBlup; indirect selection; path analysis; selection index
Zea mays; estresse abiótico; GBlup; seleção indireta; análise de trilha; índice de seleção
title_short Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
title_full Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
title_fullStr Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
title_full_unstemmed Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
title_sort Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn
author Morais, Pedro Patric Pinho
author_facet Morais, Pedro Patric Pinho
Sousa, Massaine Bandeira e
Galli, Giovanni
Andrade, Luciano Rogério Braatz e
Fritsche-Neto, Roberto
Oliveira, Aluízio Borém de
author_role author
author2 Sousa, Massaine Bandeira e
Galli, Giovanni
Andrade, Luciano Rogério Braatz e
Fritsche-Neto, Roberto
Oliveira, Aluízio Borém de
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv
Pioneer Hi-bred International
Fundação de Amparo à Pesquisa do Estado de São Paulo (Fapesp, number 2013/24135-2)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes)
dc.contributor.author.fl_str_mv Morais, Pedro Patric Pinho
Sousa, Massaine Bandeira e
Galli, Giovanni
Andrade, Luciano Rogério Braatz e
Fritsche-Neto, Roberto
Oliveira, Aluízio Borém de
dc.subject.por.fl_str_mv Zea mays; abiotic stress; GBlup; indirect selection; path analysis; selection index
Zea mays; estresse abiótico; GBlup; seleção indireta; análise de trilha; índice de seleção
topic Zea mays; abiotic stress; GBlup; indirect selection; path analysis; selection index
Zea mays; estresse abiótico; GBlup; seleção indireta; análise de trilha; índice de seleção
description The objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not promising for this purpose, since NUE should be estimated taking grain yield into account. However, indirect selection for NUE can be performed via number of ears or using the selection index considering number and weight of ears.
publishDate 2018
dc.date.none.fl_str_mv 2018-08-13
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/25308
url https://seer.sct.embrapa.br/index.php/pab/article/view/25308
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/25308/14210
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25308/17074
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/25308/17075
dc.rights.driver.fl_str_mv Direitos autorais 2018 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2018 Pesquisa Agropecuária Brasileira
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.53, n.5, May 2018; 633-640
Pesquisa Agropecuária Brasileira; v.53, n.5, May 2018; 633-640
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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