Genetic divergence and path analysis in wheat cultivars under heat stress

Detalhes bibliográficos
Autor(a) principal: da Silva Oliveira, Carlos Eduardo
Data de Publicação: 2020
Outros Autores: de Freitas Andrade, Agner, Zoz, André, Lustosa Sobrinho, Renato, Zoz, Tiago
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/65493
Resumo: One of the biggest limitations for the wheat crop expansion to Brazilian tropical regions is the high temperature in the rainy season. This study aimed to select, based on genetic divergence and path analysis, cultivars that tolerate cultivation in the summer (heat stress). Nine wheat cultivars were sown, using a randomized block design with three replications, with plots consisting of 10 rows of 6 m and row spacing of 0.15 m. The highest grain yield and number of ears m-2 were observed for the CD 150 cultivar and the largest 1,000-grain weight for CD 116. BRS 220, IPR 136, IPR 144 and BRS Pardela had the highest number of sterile spikelets. The highest number of grains per ear was observed for CD 150, CD 116, BRS Pardela, IPR 130 and IPR 85, showing direct effects on grain yield, evidenced by the path analysis. CD 116 and CD 150 were the most productive cultivars and can be considered as possible parents in wheat breeding programs. IPR 85, CD 116, CD 108 and CD 150 showed a greater tolerance to high temperatures. KEYWORDS: Triticum aestivum, genotypic correlations, high-temperature tolerance, wheat crop expansion.
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spelling Genetic divergence and path analysis in wheat cultivars under heat stressDivergência genética e análise de trilha em cultivares de trigo sob estresse térmicoOne of the biggest limitations for the wheat crop expansion to Brazilian tropical regions is the high temperature in the rainy season. This study aimed to select, based on genetic divergence and path analysis, cultivars that tolerate cultivation in the summer (heat stress). Nine wheat cultivars were sown, using a randomized block design with three replications, with plots consisting of 10 rows of 6 m and row spacing of 0.15 m. The highest grain yield and number of ears m-2 were observed for the CD 150 cultivar and the largest 1,000-grain weight for CD 116. BRS 220, IPR 136, IPR 144 and BRS Pardela had the highest number of sterile spikelets. The highest number of grains per ear was observed for CD 150, CD 116, BRS Pardela, IPR 130 and IPR 85, showing direct effects on grain yield, evidenced by the path analysis. CD 116 and CD 150 were the most productive cultivars and can be considered as possible parents in wheat breeding programs. IPR 85, CD 116, CD 108 and CD 150 showed a greater tolerance to high temperatures. KEYWORDS: Triticum aestivum, genotypic correlations, high-temperature tolerance, wheat crop expansion.Uma das maiores limitações da expansão da triticultura para regiões tropicais do Brasil é a elevada temperatura no período chuvoso. Objetivou-se selecionar, com base na divergência genética e análise de trilha, cultivares que toleram ser cultivadas no verão (estresse térmico). Foram semeadas 9 cultivares de trigo, com delineamento experimental em blocos ao acaso e três repetições, sendo as parcelas constituídas por 10 linhas de 6 m, com espaçamento de 0,15 m. A maior produtividade e número de espigas m-2 ocorreram para a cultivar CD 150 e a maior massa de mil grãos para CD 116. BRS 220, IPR 136, IPR 144 e BRS Pardela tiveram maior número de espiguetas estéreis. O maior número de grãos por espiga foi verificado para CD 150, CD 116, BRS Pardela, IPR 130 e IPR 85, apresentando efeito direto na produtividade de grãos por meio da análise de trilha. CD 116 e CD 150 foram as mais produtivas, podendo ser consideradas possíveis genitoras em programas de melhoramento de trigo. IPR 85, CD 116, CD 108 e CD 150 mostraram maior tolerância a altas temperaturas. PALAVRAS-CHAVE: Triticum aestivum, correlações genotípicas, tolerância a alta temperatura, expansão tritícola.Escola de Agronomia - Universidade Federal de Goiás2020-12-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/65493Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 50 (2020); e65493Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 50 (2020); e65493Pesquisa Agropecuária Tropical; v. 50 (2020); e654931983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/65493/35799Copyright (c) 2020 Pesquisa Agropecuária Tropicalinfo:eu-repo/semantics/openAccessda Silva Oliveira, Carlos Eduardode Freitas Andrade, AgnerZoz, AndréLustosa Sobrinho, Renato Zoz, Tiago2020-12-05T11:11:11Zoai:ojs.revistas.ufg.br:article/65493Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:29.725053Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv Genetic divergence and path analysis in wheat cultivars under heat stress
Divergência genética e análise de trilha em cultivares de trigo sob estresse térmico
title Genetic divergence and path analysis in wheat cultivars under heat stress
spellingShingle Genetic divergence and path analysis in wheat cultivars under heat stress
da Silva Oliveira, Carlos Eduardo
title_short Genetic divergence and path analysis in wheat cultivars under heat stress
title_full Genetic divergence and path analysis in wheat cultivars under heat stress
title_fullStr Genetic divergence and path analysis in wheat cultivars under heat stress
title_full_unstemmed Genetic divergence and path analysis in wheat cultivars under heat stress
title_sort Genetic divergence and path analysis in wheat cultivars under heat stress
author da Silva Oliveira, Carlos Eduardo
author_facet da Silva Oliveira, Carlos Eduardo
de Freitas Andrade, Agner
Zoz, André
Lustosa Sobrinho, Renato
Zoz, Tiago
author_role author
author2 de Freitas Andrade, Agner
Zoz, André
Lustosa Sobrinho, Renato
Zoz, Tiago
author2_role author
author
author
author
dc.contributor.author.fl_str_mv da Silva Oliveira, Carlos Eduardo
de Freitas Andrade, Agner
Zoz, André
Lustosa Sobrinho, Renato
Zoz, Tiago
description One of the biggest limitations for the wheat crop expansion to Brazilian tropical regions is the high temperature in the rainy season. This study aimed to select, based on genetic divergence and path analysis, cultivars that tolerate cultivation in the summer (heat stress). Nine wheat cultivars were sown, using a randomized block design with three replications, with plots consisting of 10 rows of 6 m and row spacing of 0.15 m. The highest grain yield and number of ears m-2 were observed for the CD 150 cultivar and the largest 1,000-grain weight for CD 116. BRS 220, IPR 136, IPR 144 and BRS Pardela had the highest number of sterile spikelets. The highest number of grains per ear was observed for CD 150, CD 116, BRS Pardela, IPR 130 and IPR 85, showing direct effects on grain yield, evidenced by the path analysis. CD 116 and CD 150 were the most productive cultivars and can be considered as possible parents in wheat breeding programs. IPR 85, CD 116, CD 108 and CD 150 showed a greater tolerance to high temperatures. KEYWORDS: Triticum aestivum, genotypic correlations, high-temperature tolerance, wheat crop expansion.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-05
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/65493
url https://revistas.ufg.br/pat/article/view/65493
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/65493/35799
dc.rights.driver.fl_str_mv Copyright (c) 2020 Pesquisa Agropecuária Tropical
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Pesquisa Agropecuária Tropical
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; Vol. 50 (2020); e65493
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); Vol. 50 (2020); e65493
Pesquisa Agropecuária Tropical; v. 50 (2020); e65493
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
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