Seed germination of paineira under water and salt stress

Detalhes bibliográficos
Autor(a) principal: Fanti, Silmara Cristina
Data de Publicação: 2004
Outros Autores: Perez, Sonia Cristina Juliano Gualtieri de Andrade
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6855
Resumo: Multiple stresses promoted by a changeable environment can limit germination process, seedling emergence and survival. The objective of this work was to determine the effect of water and salt stresses on the viability and vigour of “paineira” seeds (Chorisia speciosa St. Hil.) and the maximal tolerance limits. Water stress was evaluated using mannitol and PEG 6000 solutions. Salt stress was evaluated using NaCl, KCl and CaCl2 solutions. After coat punction, four replicates of 50 seeds for each treatment were submitted to germination on filter paper moistened with test solutions at different osmotic potential and kept at 27°C. The lowest tolerance limit to water stress was observed when PEG solutions were used. The maximal tolerance limit was between -0,6 and -0.7 MPa for PEG 6000 and between -1.4 and -1.6 MPa for mannitol solutions. The germination percentage decreased with the reduction of the osmotic potential of the environment, independently of the used salts. The same tolerance limits to different salts were observed between -1.0 and -1.2 MPa. Paineira may be considered a glycophyte with moderate tolerance to the salts NaCl, KCl and CaCl2.
id EMBRAPA-4_024b59997ead2ec1ab3a4f5e0de0baea
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/6855
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Seed germination of paineira under water and salt stressProcesso germinativo de sementes de paineira sob estresses hídrico e salinoChorisia speciosa; vigour; salt tolerance; osmotic pressureChorisia speciosa; vigor; tolerância salina; pressão osmóticaMultiple stresses promoted by a changeable environment can limit germination process, seedling emergence and survival. The objective of this work was to determine the effect of water and salt stresses on the viability and vigour of “paineira” seeds (Chorisia speciosa St. Hil.) and the maximal tolerance limits. Water stress was evaluated using mannitol and PEG 6000 solutions. Salt stress was evaluated using NaCl, KCl and CaCl2 solutions. After coat punction, four replicates of 50 seeds for each treatment were submitted to germination on filter paper moistened with test solutions at different osmotic potential and kept at 27°C. The lowest tolerance limit to water stress was observed when PEG solutions were used. The maximal tolerance limit was between -0,6 and -0.7 MPa for PEG 6000 and between -1.4 and -1.6 MPa for mannitol solutions. The germination percentage decreased with the reduction of the osmotic potential of the environment, independently of the used salts. The same tolerance limits to different salts were observed between -1.0 and -1.2 MPa. Paineira may be considered a glycophyte with moderate tolerance to the salts NaCl, KCl and CaCl2.O ambiente mutável provoca múltiplos estresses, que podem limitar a germinação da semente e a emergência e sobrevivência da plântula. Os objetivos deste trabalho foram determinar o efeito dos estresses hídrico e salino na viabilidade e vigor de sementes de paineira (Chorisia speciosa St. Hil.) e o limite máximo de tolerância a esses estresses. Para avaliação do efeito do estresse hídrico foram utilizadas soluções de manitol e PEG 6000; para o estresse salino, soluções de NaCl, KCl e CaCl2. Após a punção do tegumento, quatro repetições de 50 sementes por tratamento foram submetidas à germinação em substrato de papel-filtro umedecido com as soluções de diferentes potenciais osmóticos e incubadas a 27°C. As sementes apresentaram menor tolerância ao estresse hídrico simulado com PEG 6000 em relação ao simulado com manitol. O limite máximo de tolerância à seca está situado entre -0,6 e -0,7 MPa de PEG 6000 e entre -1,4 e -1,6 MPa de manitol. Independentemente dos sais utilizados, a porcentagem de germinação decresceu com a diminuição do potencial osmótico do meio. O limite máximo de tolerância ao estresse salino foi o mesmo para todos os sais avaliados e está situado entre -1,0 e -1,2 MPa. A paineira pode ser classificada como glicófita, com moderada tolerância aos sais NaCl, KCl e CaCl2.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFanti, Silmara CristinaPerez, Sonia Cristina Juliano Gualtieri de Andrade2004-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6855Pesquisa Agropecuaria Brasileira; v.39, n.9, set. 2004; 903-909Pesquisa Agropecuária Brasileira; v.39, n.9, set. 2004; 903-9091678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6855/3911info:eu-repo/semantics/openAccess2014-08-26T20:00:03Zoai:ojs.seer.sct.embrapa.br:article/6855Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-26T20:00:03Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Seed germination of paineira under water and salt stress
Processo germinativo de sementes de paineira sob estresses hídrico e salino
title Seed germination of paineira under water and salt stress
spellingShingle Seed germination of paineira under water and salt stress
Fanti, Silmara Cristina
Chorisia speciosa; vigour; salt tolerance; osmotic pressure
Chorisia speciosa; vigor; tolerância salina; pressão osmótica
title_short Seed germination of paineira under water and salt stress
title_full Seed germination of paineira under water and salt stress
title_fullStr Seed germination of paineira under water and salt stress
title_full_unstemmed Seed germination of paineira under water and salt stress
title_sort Seed germination of paineira under water and salt stress
author Fanti, Silmara Cristina
author_facet Fanti, Silmara Cristina
Perez, Sonia Cristina Juliano Gualtieri de Andrade
author_role author
author2 Perez, Sonia Cristina Juliano Gualtieri de Andrade
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Fanti, Silmara Cristina
Perez, Sonia Cristina Juliano Gualtieri de Andrade
dc.subject.por.fl_str_mv Chorisia speciosa; vigour; salt tolerance; osmotic pressure
Chorisia speciosa; vigor; tolerância salina; pressão osmótica
topic Chorisia speciosa; vigour; salt tolerance; osmotic pressure
Chorisia speciosa; vigor; tolerância salina; pressão osmótica
description Multiple stresses promoted by a changeable environment can limit germination process, seedling emergence and survival. The objective of this work was to determine the effect of water and salt stresses on the viability and vigour of “paineira” seeds (Chorisia speciosa St. Hil.) and the maximal tolerance limits. Water stress was evaluated using mannitol and PEG 6000 solutions. Salt stress was evaluated using NaCl, KCl and CaCl2 solutions. After coat punction, four replicates of 50 seeds for each treatment were submitted to germination on filter paper moistened with test solutions at different osmotic potential and kept at 27°C. The lowest tolerance limit to water stress was observed when PEG solutions were used. The maximal tolerance limit was between -0,6 and -0.7 MPa for PEG 6000 and between -1.4 and -1.6 MPa for mannitol solutions. The germination percentage decreased with the reduction of the osmotic potential of the environment, independently of the used salts. The same tolerance limits to different salts were observed between -1.0 and -1.2 MPa. Paineira may be considered a glycophyte with moderate tolerance to the salts NaCl, KCl and CaCl2.
publishDate 2004
dc.date.none.fl_str_mv 2004-09-01
dc.type.none.fl_str_mv
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://seer.sct.embrapa.br/index.php/pab/article/view/6855
url https://seer.sct.embrapa.br/index.php/pab/article/view/6855
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6855/3911
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.39, n.9, set. 2004; 903-909
Pesquisa Agropecuária Brasileira; v.39, n.9, set. 2004; 903-909
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
_version_ 1793416711200833536