Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/21743 |
Resumo: | Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils. The objective of this work was the comparison between two screening approaches for the development of Al tolerant maize populations. One cycle of divergent selection for aluminum tolerance, using both nutrient solution and pots with acid soil, were completed in the maize population SIKALQ. The four sub-populations selected through both selection procedures were compared with the original population and checks in field trials repeated over locations. Eight environments stratified into four groups varying from non acid to high aluminum saturation were used. Three variables were analyzed for comparisons of methodologies: grain yield, plant height and days to male flowering. The populations performed similarly in the high productivity locations and the differences between tolerant and sensitive ones were more evident for increasing levels of toxic aluminum. In spite of little differences, selection in pots with acid soil was more efficient than nutrient solution in changing the genetic structure of the population toward more tolerant and sensitive levels. |
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Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance Métodos de seleção de plântulas de milho no campo em relação à tolerância ao alumínio Zea maysacid soilsseedlingdivergent selectionZea mayssolos ácidosplântulasseleção divergente Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils. The objective of this work was the comparison between two screening approaches for the development of Al tolerant maize populations. One cycle of divergent selection for aluminum tolerance, using both nutrient solution and pots with acid soil, were completed in the maize population SIKALQ. The four sub-populations selected through both selection procedures were compared with the original population and checks in field trials repeated over locations. Eight environments stratified into four groups varying from non acid to high aluminum saturation were used. Three variables were analyzed for comparisons of methodologies: grain yield, plant height and days to male flowering. The populations performed similarly in the high productivity locations and the differences between tolerant and sensitive ones were more evident for increasing levels of toxic aluminum. In spite of little differences, selection in pots with acid soil was more efficient than nutrient solution in changing the genetic structure of the population toward more tolerant and sensitive levels. A seleção e o melhoramento visando tolerância ao alumínio é um procedimento valioso para aumentar a produção de milho (Zea mays L.) em solos ácidos. O objetivo deste trabalho foi comparar a eficiência de duas metodologias de seleção de plântulas, no desenvolvimento de populações de milho tolerantes ao alumínio. Foi realizado na população SIKALQ, um ciclo de seleção divergente para tolerância ao alumínio, utilizando solução nutritiva e vasos com solo ácido. As quatro sub-populações selecionadas pelas duas metodologias foram comparadas com a população original e testemunhas em experimentos de campo em vários locais. Foram utilizados oito locais, estratificados em quatro grupos começando com solos não ácidos até com alta saturação com alumínio. As comparações foram realizadas utilizando três variáveis: produção de grãos, altura de planta e dias até florescimento. As populações apresentaram um comportamento semelhante entre elas nos locais de alta produtividade, e as diferenças entre as tolerantes e suscetíveis ficaram mais evidentes na medida em que aumentou a toxidez por alumínio. Os resultados sugerem que a seleção em vasos com solo ácido foi mais eficiente em alterar a estrutura genética da população do que a solução nutritiva. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2002-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/2174310.1590/S0103-90162002000200029Scientia Agricola; v. 59 n. 2 (2002); 397-401Scientia Agricola; Vol. 59 No. 2 (2002); 397-401Scientia Agricola; Vol. 59 Núm. 2 (2002); 397-4011678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/21743/23767Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessGiaveno, Carlos DanielMiranda Filho, José Branco de2015-07-07T12:04:35Zoai:revistas.usp.br:article/21743Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T12:04:35Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance Métodos de seleção de plântulas de milho no campo em relação à tolerância ao alumínio |
title |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance |
spellingShingle |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance Giaveno, Carlos Daniel Zea mays acid soils seedling divergent selection Zea mays solos ácidos plântulas seleção divergente |
title_short |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance |
title_full |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance |
title_fullStr |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance |
title_full_unstemmed |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance |
title_sort |
Field comparison between selection methods at the maize seedling stage in relation to aluminum tolerance |
author |
Giaveno, Carlos Daniel |
author_facet |
Giaveno, Carlos Daniel Miranda Filho, José Branco de |
author_role |
author |
author2 |
Miranda Filho, José Branco de |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Giaveno, Carlos Daniel Miranda Filho, José Branco de |
dc.subject.por.fl_str_mv |
Zea mays acid soils seedling divergent selection Zea mays solos ácidos plântulas seleção divergente |
topic |
Zea mays acid soils seedling divergent selection Zea mays solos ácidos plântulas seleção divergente |
description |
Selection and breeding for aluminum tolerance is a useful approach to increase maize (Zea mays L.) grain yield in acid soils. The objective of this work was the comparison between two screening approaches for the development of Al tolerant maize populations. One cycle of divergent selection for aluminum tolerance, using both nutrient solution and pots with acid soil, were completed in the maize population SIKALQ. The four sub-populations selected through both selection procedures were compared with the original population and checks in field trials repeated over locations. Eight environments stratified into four groups varying from non acid to high aluminum saturation were used. Three variables were analyzed for comparisons of methodologies: grain yield, plant height and days to male flowering. The populations performed similarly in the high productivity locations and the differences between tolerant and sensitive ones were more evident for increasing levels of toxic aluminum. In spite of little differences, selection in pots with acid soil was more efficient than nutrient solution in changing the genetic structure of the population toward more tolerant and sensitive levels. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-06-01 |
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://www.revistas.usp.br/sa/article/view/21743 10.1590/S0103-90162002000200029 |
url |
https://www.revistas.usp.br/sa/article/view/21743 |
identifier_str_mv |
10.1590/S0103-90162002000200029 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/21743/23767 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 59 n. 2 (2002); 397-401 Scientia Agricola; Vol. 59 No. 2 (2002); 397-401 Scientia Agricola; Vol. 59 Núm. 2 (2002); 397-401 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1787713253169692672 |