Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance

Detalhes bibliográficos
Autor(a) principal: Cançado, Geraldo Magela de Almeida
Data de Publicação: 2002
Outros Autores: Parentoni, Sidney Netto, Borém, Aluízio, Lopes, Maurício Antônio
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6363
Resumo: Nine maize inbred lines and their hybrid combinations were evaluated in incomplete diallel crosses to study the aluminum (Al) tolerance behavior. The phenotypic indexes used to determine Al tolerance were the relative seminal-root length (RSRL), the net seminal-root length (NSRL) and the hemathoxylin staining, determined after seven days of growth in nutrient solution with 222 mmoles L-1 of Al. The diallel crosses results showed that additive effects were more important than not additive effects, for all indexes evaluated. Maize lines L13, L724, L723, and L16 showed better behaviour for general combining ability (GCA) and specific combining ability (SCA) and are the more indicated for obtaining Al-tolerant hybrids. The correlation observed between NSRL and hematoxylin staining was 0.76, between NSRL and RSRL was 0.63 and between RSRL and hematoxylin staining equal to 0.27. Therefore, hematoxylin appears to be a suitable tool to assist Al-tolerance selection in maize breeding programs.
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spelling Evaluation of nine maize inbred lines in diallel cross in relation to aluminum toleranceAvaliação de nove linhagens de milho em cruzamentos dialélicos quanto à tolerância ao alumínioprogeny; nutrient solution; pigments; root length; plant breedingprogênie; solução nutritiva; pigmentos; comprimento da raiz; melhoramento vegetalNine maize inbred lines and their hybrid combinations were evaluated in incomplete diallel crosses to study the aluminum (Al) tolerance behavior. The phenotypic indexes used to determine Al tolerance were the relative seminal-root length (RSRL), the net seminal-root length (NSRL) and the hemathoxylin staining, determined after seven days of growth in nutrient solution with 222 mmoles L-1 of Al. The diallel crosses results showed that additive effects were more important than not additive effects, for all indexes evaluated. Maize lines L13, L724, L723, and L16 showed better behaviour for general combining ability (GCA) and specific combining ability (SCA) and are the more indicated for obtaining Al-tolerant hybrids. The correlation observed between NSRL and hematoxylin staining was 0.76, between NSRL and RSRL was 0.63 and between RSRL and hematoxylin staining equal to 0.27. Therefore, hematoxylin appears to be a suitable tool to assist Al-tolerance selection in maize breeding programs.Avaliaram-se nove linhagens endogâmicas de milho e seus cruzamentos quanto à tolerância ao alumínio (Al), em um dialelo incompleto. Foram utilizados os índices fenotípicos de comprimento relativo de raiz seminal (CRRS), comprimento líquido de raiz seminal (CLRS) e coloração por hematoxilina, determinados após sete dias de crescimento em solução nutritiva contendo 222 mmoles L-1 de Al. Os resultados dos cruzamentos dialélicos demonstraram que os efeitos aditivos foram mais importantes que os efeitos não-aditivos para os três índices avaliados. As linhagens L13, L724, L723 e L16 seriam as mais indicadas para a obtenção de híbridos visando tolerância ao Al, por apresentarem os melhores valores de capacidade geral de combinação e por participarem dos cruzamentos de melhor capacidade específica de combinação. Uma correlação de 0,76 foi observada entre os índices CLRS e a coloração por hematoxilina, de 0,63 entre CLRS e CRRS e de 0,27 entre CRRS e coloração por hematoxilina. A coloração por hematoxilina demonstrou ser uma valiosa ferramenta para programas de melhoramento de milho que visam a seleção de genótipos com maior tolerância ao alumínio.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCançado, Geraldo Magela de AlmeidaParentoni, Sidney NettoBorém, AluízioLopes, Maurício Antônio2002-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6363Pesquisa Agropecuaria Brasileira; v.37, n.4, abr. 2002; 471-478Pesquisa Agropecuária Brasileira; v.37, n.4, abr. 2002; 471-4781678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6363/3420info:eu-repo/semantics/openAccess2010-08-19T17:38:20Zoai:ojs.seer.sct.embrapa.br:article/6363Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-19T17:38:20Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
Avaliação de nove linhagens de milho em cruzamentos dialélicos quanto à tolerância ao alumínio
title Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
spellingShingle Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
Cançado, Geraldo Magela de Almeida
progeny; nutrient solution; pigments; root length; plant breeding
progênie; solução nutritiva; pigmentos; comprimento da raiz; melhoramento vegetal
title_short Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
title_full Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
title_fullStr Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
title_full_unstemmed Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
title_sort Evaluation of nine maize inbred lines in diallel cross in relation to aluminum tolerance
author Cançado, Geraldo Magela de Almeida
author_facet Cançado, Geraldo Magela de Almeida
Parentoni, Sidney Netto
Borém, Aluízio
Lopes, Maurício Antônio
author_role author
author2 Parentoni, Sidney Netto
Borém, Aluízio
Lopes, Maurício Antônio
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Cançado, Geraldo Magela de Almeida
Parentoni, Sidney Netto
Borém, Aluízio
Lopes, Maurício Antônio
dc.subject.por.fl_str_mv progeny; nutrient solution; pigments; root length; plant breeding
progênie; solução nutritiva; pigmentos; comprimento da raiz; melhoramento vegetal
topic progeny; nutrient solution; pigments; root length; plant breeding
progênie; solução nutritiva; pigmentos; comprimento da raiz; melhoramento vegetal
description Nine maize inbred lines and their hybrid combinations were evaluated in incomplete diallel crosses to study the aluminum (Al) tolerance behavior. The phenotypic indexes used to determine Al tolerance were the relative seminal-root length (RSRL), the net seminal-root length (NSRL) and the hemathoxylin staining, determined after seven days of growth in nutrient solution with 222 mmoles L-1 of Al. The diallel crosses results showed that additive effects were more important than not additive effects, for all indexes evaluated. Maize lines L13, L724, L723, and L16 showed better behaviour for general combining ability (GCA) and specific combining ability (SCA) and are the more indicated for obtaining Al-tolerant hybrids. The correlation observed between NSRL and hematoxylin staining was 0.76, between NSRL and RSRL was 0.63 and between RSRL and hematoxylin staining equal to 0.27. Therefore, hematoxylin appears to be a suitable tool to assist Al-tolerance selection in maize breeding programs.
publishDate 2002
dc.date.none.fl_str_mv 2002-04-01
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/6363
url https://seer.sct.embrapa.br/index.php/pab/article/view/6363
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6363/3420
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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.37, n.4, abr. 2002; 471-478
Pesquisa Agropecuária Brasileira; v.37, n.4, abr. 2002; 471-478
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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