Pathway analyses in wheat genotypes under waterlogging stress
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12966 |
Resumo: | Indirect selection can be considered an interesting strategy for plant breeding, especially when an easily measurable/high heritability trait is highly correlated with a target trait which has a lower heritability in segregating populations. The objective of this study was to obtain estimates of phenotypic, genotypic and environmental correlations and to evaluate the partition of genotypic correlations in direct and indirect effects of agronomic variables on the GY variable, through the analysis of two cultivated environments in fifteen wheat segregating populations. The agronomic traits grain yield per plant (GY), number of grains per ear (NGE), grain weight per ear (GWE), thousand grain weight (TGW), number of fertile tillers (NFT), days from emergence to flowering (DEF), days from flowering to maturity (DFM), total development cycle (CYC), and percentage of lodging (LODG), were evaluated in F4 populations under two cropping systems (with and without flooding). In all populations, by means of simple correlations, the selection of more productive plants can be accomplished by indirect selection for NGE, GWE and NFT. Through path analysis, it was possible to identify an indirect effect on GY by NGE. Also, the effect of GWE, NFT, CYC and DEF on the correlation between other characters (NGE x GY, GY x WTG, DFM x GY, GY x CYC and GY x LODG), emphasizing that the NGE, GWE, NFT, DEF and CYC are the main characters to consider for increasing grain yield in wheat. |
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Semina. Ciências Agrárias (Online) |
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Pathway analyses in wheat genotypes under waterlogging stressAnálise de trilha em genótipos de trigo submetidos ao estresse por encharcamentoTriticum aestivum L.Indirect selectionPlant breedingCharacters correlation.Triticum aestivum L.Seleção indiretaMelhoramento de plantasCorrelação entre caracteres.Melhoramento VegetalIndirect selection can be considered an interesting strategy for plant breeding, especially when an easily measurable/high heritability trait is highly correlated with a target trait which has a lower heritability in segregating populations. The objective of this study was to obtain estimates of phenotypic, genotypic and environmental correlations and to evaluate the partition of genotypic correlations in direct and indirect effects of agronomic variables on the GY variable, through the analysis of two cultivated environments in fifteen wheat segregating populations. The agronomic traits grain yield per plant (GY), number of grains per ear (NGE), grain weight per ear (GWE), thousand grain weight (TGW), number of fertile tillers (NFT), days from emergence to flowering (DEF), days from flowering to maturity (DFM), total development cycle (CYC), and percentage of lodging (LODG), were evaluated in F4 populations under two cropping systems (with and without flooding). In all populations, by means of simple correlations, the selection of more productive plants can be accomplished by indirect selection for NGE, GWE and NFT. Through path analysis, it was possible to identify an indirect effect on GY by NGE. Also, the effect of GWE, NFT, CYC and DEF on the correlation between other characters (NGE x GY, GY x WTG, DFM x GY, GY x CYC and GY x LODG), emphasizing that the NGE, GWE, NFT, DEF and CYC are the main characters to consider for increasing grain yield in wheat.A seleção indireta pode ser considerada uma estratégia interessante para o melhoramento de plantas, especialmente quando um caráter de fácil mensuração ou de maior herdabilidade estiver altamente correlacionado com um caráter de interesse, que apresente menor herdabilidade em populações segregantes. Os objetivos deste trabalho consistiram em obter estimativas de coeficientes de correlação fenotípica, genotípica e ambientais e avaliar os desdobramentos das correlações genotípicas em efeitos diretos e indiretos de variáveis agronômicas sobre o rendimento de grãos por meio da análise de dois ambientes de cultivo em quinze populações segregantes de trigo. Os caracteres agronômicos rendimento de grãos por planta (RG), número de grãos por espiga (NGE), peso dos grãos por espiga (PGE), massa de mil grãos (MMG), número de afilhos férteis (NAF), dias da emergência ao florescimento (DEF), dias do florescimento à maturação (DFM), ciclo total de desenvolvimento (CICLO), e acamamento (ACAM), foram avaliados em quinze populações segregantes F4 de trigo sob dois sistemas de cultivo (com e sem encharcamento). Em todas as populações avaliadas, por meio das correlações simples, a seleção de plantas mais produtivas pode ser realizada pela seleção indireta sobre NGE, PGE e NAF. Mediante a análise de trilha foi possível identificar o efeito indireto do caráter NGE sobre RG. Assim como o efeito do PGE, do NAF, do DEF e de CICLO como causadores da formação da correlação entre outros caracteres (NGE x RG, MMG x RG, de DFM x RG, de CICLO x RG e de ACAM x RG), enfatizando que o NGE, o PGE, o NAF, o DEF e que o CICLO são os principais caracteres a serem considerados para aumentar a produtividade de grãos em trigo.UEL2014-08-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1296610.5433/1679-0359.2014v35n4p1683Semina: Ciências Agrárias; Vol. 35 No. 4 (2014); 1683-1696Semina: Ciências Agrárias; v. 35 n. 4 (2014); 1683-16961679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12966/pdf_362Copyright (c) 2014 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessKavalco, Sydney Antonio FrehnerFigueiredo, RicardoGroli, Eder LicieriZimmer, Cristiano MathiasBaretta, DiegoTessmann, Elisane WeberMagalhães Júnior, Ariano Martins deOliveira, Antonio Costa de2023-01-16T12:16:52Zoai:ojs.pkp.sfu.ca:article/12966Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-01-16T12:16:52Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Pathway analyses in wheat genotypes under waterlogging stress Análise de trilha em genótipos de trigo submetidos ao estresse por encharcamento |
title |
Pathway analyses in wheat genotypes under waterlogging stress |
spellingShingle |
Pathway analyses in wheat genotypes under waterlogging stress Kavalco, Sydney Antonio Frehner Triticum aestivum L. Indirect selection Plant breeding Characters correlation. Triticum aestivum L. Seleção indireta Melhoramento de plantas Correlação entre caracteres. Melhoramento Vegetal |
title_short |
Pathway analyses in wheat genotypes under waterlogging stress |
title_full |
Pathway analyses in wheat genotypes under waterlogging stress |
title_fullStr |
Pathway analyses in wheat genotypes under waterlogging stress |
title_full_unstemmed |
Pathway analyses in wheat genotypes under waterlogging stress |
title_sort |
Pathway analyses in wheat genotypes under waterlogging stress |
author |
Kavalco, Sydney Antonio Frehner |
author_facet |
Kavalco, Sydney Antonio Frehner Figueiredo, Ricardo Groli, Eder Licieri Zimmer, Cristiano Mathias Baretta, Diego Tessmann, Elisane Weber Magalhães Júnior, Ariano Martins de Oliveira, Antonio Costa de |
author_role |
author |
author2 |
Figueiredo, Ricardo Groli, Eder Licieri Zimmer, Cristiano Mathias Baretta, Diego Tessmann, Elisane Weber Magalhães Júnior, Ariano Martins de Oliveira, Antonio Costa de |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Kavalco, Sydney Antonio Frehner Figueiredo, Ricardo Groli, Eder Licieri Zimmer, Cristiano Mathias Baretta, Diego Tessmann, Elisane Weber Magalhães Júnior, Ariano Martins de Oliveira, Antonio Costa de |
dc.subject.por.fl_str_mv |
Triticum aestivum L. Indirect selection Plant breeding Characters correlation. Triticum aestivum L. Seleção indireta Melhoramento de plantas Correlação entre caracteres. Melhoramento Vegetal |
topic |
Triticum aestivum L. Indirect selection Plant breeding Characters correlation. Triticum aestivum L. Seleção indireta Melhoramento de plantas Correlação entre caracteres. Melhoramento Vegetal |
description |
Indirect selection can be considered an interesting strategy for plant breeding, especially when an easily measurable/high heritability trait is highly correlated with a target trait which has a lower heritability in segregating populations. The objective of this study was to obtain estimates of phenotypic, genotypic and environmental correlations and to evaluate the partition of genotypic correlations in direct and indirect effects of agronomic variables on the GY variable, through the analysis of two cultivated environments in fifteen wheat segregating populations. The agronomic traits grain yield per plant (GY), number of grains per ear (NGE), grain weight per ear (GWE), thousand grain weight (TGW), number of fertile tillers (NFT), days from emergence to flowering (DEF), days from flowering to maturity (DFM), total development cycle (CYC), and percentage of lodging (LODG), were evaluated in F4 populations under two cropping systems (with and without flooding). In all populations, by means of simple correlations, the selection of more productive plants can be accomplished by indirect selection for NGE, GWE and NFT. Through path analysis, it was possible to identify an indirect effect on GY by NGE. Also, the effect of GWE, NFT, CYC and DEF on the correlation between other characters (NGE x GY, GY x WTG, DFM x GY, GY x CYC and GY x LODG), emphasizing that the NGE, GWE, NFT, DEF and CYC are the main characters to consider for increasing grain yield in wheat. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-08-27 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12966 10.5433/1679-0359.2014v35n4p1683 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12966 |
identifier_str_mv |
10.5433/1679-0359.2014v35n4p1683 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12966/pdf_362 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2014 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2014 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 35 No. 4 (2014); 1683-1696 Semina: Ciências Agrárias; v. 35 n. 4 (2014); 1683-1696 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306067912425472 |