Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/11588 |
Resumo: | Seeds subjected to abiotic stresses may have their physiological performance compromised, impairing the multiplication of species. Thus, the objective was to evaluate the germination and initial development of Tabebuia aurea seedlings subjected to water and salt stresses. Water stress was simulated with two osmotic agents (PEG 6000 and mannitol) at five osmotic potentials (0.0, −0.2, −0.4, −0.6 and −0.8 MPa). For salt stress, three osmotic agents (NaCl, KCl and CaCl2) were used at five concentrations (0, 6, 12, 18 and 24 dS m-1). The experiments were conducted under a completely randomized experimental design, with four replicates of 25 seeds, in a factorial scheme (osmotic agents × potentials), and the data were subjected to analysis of variance and regression. The variables analyzed were germination, first germination count, germination speed index, root and shoot length, and seedling root and shoot dry mass. The results showed that water and salt stresses reduced the germination and vigor of T. aurea seeds, with water stress being more harmful to the species, especially when induced by PEG 6000. Of the salts used, the one that most harmed the species was CaCl2, followed by NaCl and KCl. |
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Physiological performance of Tabebuia aurea seeds subjected to abiotic stressesDesempenho fisiológico de sementes de Tabebuia aurea submetidas a estresses abióticosBignoniaceae. Salinidade. Estresse hídrico. Semiárido.Bignoniaceae. Salinity. Water stress. Semi-arid region.Seeds subjected to abiotic stresses may have their physiological performance compromised, impairing the multiplication of species. Thus, the objective was to evaluate the germination and initial development of Tabebuia aurea seedlings subjected to water and salt stresses. Water stress was simulated with two osmotic agents (PEG 6000 and mannitol) at five osmotic potentials (0.0, −0.2, −0.4, −0.6 and −0.8 MPa). For salt stress, three osmotic agents (NaCl, KCl and CaCl2) were used at five concentrations (0, 6, 12, 18 and 24 dS m-1). The experiments were conducted under a completely randomized experimental design, with four replicates of 25 seeds, in a factorial scheme (osmotic agents × potentials), and the data were subjected to analysis of variance and regression. The variables analyzed were germination, first germination count, germination speed index, root and shoot length, and seedling root and shoot dry mass. The results showed that water and salt stresses reduced the germination and vigor of T. aurea seeds, with water stress being more harmful to the species, especially when induced by PEG 6000. Of the salts used, the one that most harmed the species was CaCl2, followed by NaCl and KCl.Sementes submetidas a estresses abióticos podem ter seu desempenho fisiológico comprometido, prejudicando a multiplicação das espécies. Dessa forma, objetivou-se avaliar a germinação e o desenvolvimento inicial de plântulas de Tabebuia aurea submetidas aos estresses hídrico e salino. Para tanto, foi simulado o estresse hídrico com dois agentes osmóticos (PEG 6000 e manitol) em cinco potenciais osmóticos (0,0; −0,2; −0,4; −0,6 e −0,8 MPa). No estresse salino, foram utilizados três agentes osmóticos (NaCl, KCl e CaCl2) em cinco concentrações (0; 6; 12; 18 e 24 dSm-1). Os testes foram executados sob delineamento experimental inteiramente casualizado, com quatro repetições de 25 sementes, em esquema fatorial (agentes osmóticos × potenciais), sendo os dados submetidos a análise de variância e regressão. As variáveis analisadas foram germinação, primeira contagem de germinação, índice de velocidade de germinação, comprimento radicular e da parte aérea, massa seca de raiz e da parte aérea das plântulas. Os resultados demonstraram que os estresses hídrico e salino reduziram a germinação e vigor de sementes de T. aurea, sendo o hídrico mais danoso à espécie, principalmente quando induzido por PEG 6000. Dos sais empregados, o que mais prejudicou a espécie foi o CaCl2, seguido pelo NaCl e KCl.Universidade Federal Rural do Semi-Árido2023-09-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/1158810.1590/1983-21252023v36n423rcREVISTA CAATINGA; Vol. 36 No. 4 (2023); 962-970Revista Caatinga; v. 36 n. 4 (2023); 962-9701983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/11588/11337Copyright (c) 2023 Revista Caatingainfo:eu-repo/semantics/openAccessMedeiros, Hohana Lissa de SousaPereira, Kleane Targino Oliveira Torres, Salvador BarrosBenedito, Clarisse PereiraCouto Júnior, Jorge Ricardo Silva do2023-09-28T13:11:57Zoai:ojs.periodicos.ufersa.edu.br:article/11588Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:47:04.462473Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses Desempenho fisiológico de sementes de Tabebuia aurea submetidas a estresses abióticos |
title |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses |
spellingShingle |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses Medeiros, Hohana Lissa de Sousa Bignoniaceae. Salinidade. Estresse hídrico. Semiárido. Bignoniaceae. Salinity. Water stress. Semi-arid region. |
title_short |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses |
title_full |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses |
title_fullStr |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses |
title_full_unstemmed |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses |
title_sort |
Physiological performance of Tabebuia aurea seeds subjected to abiotic stresses |
author |
Medeiros, Hohana Lissa de Sousa |
author_facet |
Medeiros, Hohana Lissa de Sousa Pereira, Kleane Targino Oliveira Torres, Salvador Barros Benedito, Clarisse Pereira Couto Júnior, Jorge Ricardo Silva do |
author_role |
author |
author2 |
Pereira, Kleane Targino Oliveira Torres, Salvador Barros Benedito, Clarisse Pereira Couto Júnior, Jorge Ricardo Silva do |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Medeiros, Hohana Lissa de Sousa Pereira, Kleane Targino Oliveira Torres, Salvador Barros Benedito, Clarisse Pereira Couto Júnior, Jorge Ricardo Silva do |
dc.subject.por.fl_str_mv |
Bignoniaceae. Salinidade. Estresse hídrico. Semiárido. Bignoniaceae. Salinity. Water stress. Semi-arid region. |
topic |
Bignoniaceae. Salinidade. Estresse hídrico. Semiárido. Bignoniaceae. Salinity. Water stress. Semi-arid region. |
description |
Seeds subjected to abiotic stresses may have their physiological performance compromised, impairing the multiplication of species. Thus, the objective was to evaluate the germination and initial development of Tabebuia aurea seedlings subjected to water and salt stresses. Water stress was simulated with two osmotic agents (PEG 6000 and mannitol) at five osmotic potentials (0.0, −0.2, −0.4, −0.6 and −0.8 MPa). For salt stress, three osmotic agents (NaCl, KCl and CaCl2) were used at five concentrations (0, 6, 12, 18 and 24 dS m-1). The experiments were conducted under a completely randomized experimental design, with four replicates of 25 seeds, in a factorial scheme (osmotic agents × potentials), and the data were subjected to analysis of variance and regression. The variables analyzed were germination, first germination count, germination speed index, root and shoot length, and seedling root and shoot dry mass. The results showed that water and salt stresses reduced the germination and vigor of T. aurea seeds, with water stress being more harmful to the species, especially when induced by PEG 6000. Of the salts used, the one that most harmed the species was CaCl2, followed by NaCl and KCl. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-09-28 |
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://periodicos.ufersa.edu.br/caatinga/article/view/11588 10.1590/1983-21252023v36n423rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/11588 |
identifier_str_mv |
10.1590/1983-21252023v36n423rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/11588/11337 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2023 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 36 No. 4 (2023); 962-970 Revista Caatinga; v. 36 n. 4 (2023); 962-970 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
_version_ |
1797674030100119552 |