Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress

Detalhes bibliográficos
Autor(a) principal: Nunes, Luma Rayane de Lima
Data de Publicação: 2020
Outros Autores: Cruz, Miller Clementino, Pinheiro, Charles Lobo, Sousa, Geocleber Gomes De, Dutra, Alek Sandro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37521
Resumo: Salinity and water deficiency are abiotic factors which have a strong impact on agricultural activities, especially in arid and semi-arid regions. The aim of this research was to analyse the tolerance of two genotypes of forage sorghum, EA 116 and BRS Ponta Negra, to different levels of water and salt stress during germination. The conditions of water and salt stress were simulated by moistening the substrate with a solution of mannitol and of sodium chloride (NaCl) respectively, with the water potential adjusted to 0 (distilled water), -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa. The variables under analysis were germination percentage, first count, germination speed index, shoot and root length, seedling dry weight, electrolyte leakage and leaf Na+/K+ ratio. The experiment was conducted in a completely randomised design, and distributed in a 2 (genotypes) × 2 (stress condition) × 7 (osmotic potential) factorial scheme, with four replications. The EA 116 and BRS Ponta Negra genotypes show greater tolerance to water stress. The EA 116 cultivar maintained germination under water stress from 0 to -0.6 MPa and saline stress from 0 to -0.4 MPa.
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spelling Germination and vigour in genotypes of forage sorghum at different levels of water and salt stressGerminação e vigor de genótipos de sorgo forrageiro em diferentes níveis de estresse hídrico e salinoSorghum bicolorHomeostasisToleranceAbiotic stress.Sorghum bicolorHomeostaseTolerânciaEstresse abiótico.Salinity and water deficiency are abiotic factors which have a strong impact on agricultural activities, especially in arid and semi-arid regions. The aim of this research was to analyse the tolerance of two genotypes of forage sorghum, EA 116 and BRS Ponta Negra, to different levels of water and salt stress during germination. The conditions of water and salt stress were simulated by moistening the substrate with a solution of mannitol and of sodium chloride (NaCl) respectively, with the water potential adjusted to 0 (distilled water), -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa. The variables under analysis were germination percentage, first count, germination speed index, shoot and root length, seedling dry weight, electrolyte leakage and leaf Na+/K+ ratio. The experiment was conducted in a completely randomised design, and distributed in a 2 (genotypes) × 2 (stress condition) × 7 (osmotic potential) factorial scheme, with four replications. The EA 116 and BRS Ponta Negra genotypes show greater tolerance to water stress. The EA 116 cultivar maintained germination under water stress from 0 to -0.6 MPa and saline stress from 0 to -0.4 MPa.A salinidade e a deficiência hídrica são fatores abióticos com forte impacto sobre as atividades agrícolas, especialmente, em regiões áridas e semiáridas. Objetivou-se com a pesquisa analisar a tolerância de dois genótipos de sorgo forrageiro, EA 116 e BRS Ponta Negra, a diferentes níveis de estresse hídrico e salino durante a germinação. As condições de estresse hídrico e salino foram simuladas a partir do umedecimento do substrato com solução de manitol e Cloreto de Sódio (NaCl), respectivamente, com potencial hídrico ajustadas em: 0 (água destilada); -0,1; -0,2; -0,3; -0,4; -0,5 e -0,6 MPa. As variáveis analisadas foram Porcentagem de germinação, primeira contagem, índice de velocidade de germinação, comprimento da parte aérea e radicular, massa seca da plântula, extravasamento de eletrólitos e a relação Na+/K+ das folhas. Conduzido em delineamento inteiramente casualizado, distribuídos em esquema de fatorial 2 (genótipos) × 2 (condição de estresse) × 7 (potencial osmótico), com quatro repetições. Os genótipos EA 116 e BRS Ponta Negra apresentam maior tolerância ao estresse hídrico. A cultivar EA 116 manteve a germinação em condições de estresse hídrico de 0 a -0,6 MPa e salina de 0 a -0,4 MPa.UEL2020-08-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de laboratórioapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3752110.5433/1679-0359.2020v41n5supl1p1975Semina: Ciências Agrárias; Vol. 41 No. 5supl1 (2020); 1975-1986Semina: Ciências Agrárias; v. 41 n. 5supl1 (2020); 1975-19861679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37521/27776Copyright (c) 2020 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessNunes, Luma Rayane de LimaCruz, Miller ClementinoPinheiro, Charles LoboSousa, Geocleber Gomes DeDutra, Alek Sandro2022-10-07T13:01:27Zoai:ojs.pkp.sfu.ca:article/37521Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-07T13:01:27Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
Germinação e vigor de genótipos de sorgo forrageiro em diferentes níveis de estresse hídrico e salino
title Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
spellingShingle Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
Nunes, Luma Rayane de Lima
Sorghum bicolor
Homeostasis
Tolerance
Abiotic stress.
Sorghum bicolor
Homeostase
Tolerância
Estresse abiótico.
title_short Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
title_full Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
title_fullStr Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
title_full_unstemmed Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
title_sort Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress
author Nunes, Luma Rayane de Lima
author_facet Nunes, Luma Rayane de Lima
Cruz, Miller Clementino
Pinheiro, Charles Lobo
Sousa, Geocleber Gomes De
Dutra, Alek Sandro
author_role author
author2 Cruz, Miller Clementino
Pinheiro, Charles Lobo
Sousa, Geocleber Gomes De
Dutra, Alek Sandro
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Nunes, Luma Rayane de Lima
Cruz, Miller Clementino
Pinheiro, Charles Lobo
Sousa, Geocleber Gomes De
Dutra, Alek Sandro
dc.subject.por.fl_str_mv Sorghum bicolor
Homeostasis
Tolerance
Abiotic stress.
Sorghum bicolor
Homeostase
Tolerância
Estresse abiótico.
topic Sorghum bicolor
Homeostasis
Tolerance
Abiotic stress.
Sorghum bicolor
Homeostase
Tolerância
Estresse abiótico.
description Salinity and water deficiency are abiotic factors which have a strong impact on agricultural activities, especially in arid and semi-arid regions. The aim of this research was to analyse the tolerance of two genotypes of forage sorghum, EA 116 and BRS Ponta Negra, to different levels of water and salt stress during germination. The conditions of water and salt stress were simulated by moistening the substrate with a solution of mannitol and of sodium chloride (NaCl) respectively, with the water potential adjusted to 0 (distilled water), -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa. The variables under analysis were germination percentage, first count, germination speed index, shoot and root length, seedling dry weight, electrolyte leakage and leaf Na+/K+ ratio. The experiment was conducted in a completely randomised design, and distributed in a 2 (genotypes) × 2 (stress condition) × 7 (osmotic potential) factorial scheme, with four replications. The EA 116 and BRS Ponta Negra genotypes show greater tolerance to water stress. The EA 116 cultivar maintained germination under water stress from 0 to -0.6 MPa and saline stress from 0 to -0.4 MPa.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-07
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa de laboratório
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37521
10.5433/1679-0359.2020v41n5supl1p1975
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37521
identifier_str_mv 10.5433/1679-0359.2020v41n5supl1p1975
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/37521/27776
dc.rights.driver.fl_str_mv Copyright (c) 2020 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 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. 41 No. 5supl1 (2020); 1975-1986
Semina: Ciências Agrárias; v. 41 n. 5supl1 (2020); 1975-1986
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
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