Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination

This study evaluated the loss of desiccation tolerance in C. langsdorffii seeds during the germination process. Seeds were imbibed for 24, 48, 72, 96, 120 and 144 hours and dried to the initial moisture content, kept in this state for 3 days after which they were submitted to pre-humidification and...

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Autores: Pereira, Wilson Vicente Souza, Faria, José Marcio Rocha, Tonetti, Olivia Alvina Oliveira, Silva, Edvaldo Aparecido Amaral da [UNESP]
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Brasil
Recursos:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/130121
Acesso em linha:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000200501&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/130121
Access Level:acceso abierto
Palavra-chave:Copaiba
Desiccation sensitivity
Imbibition
Copaíba
Sensibilidade à dessecação
Embebição
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oai_identifier_str oai:repositorio.unesp.br:11449/130121
network_acronym_str BR
network_name_str Brasil
repository_id_str
dc.title.none.fl_str_mv Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
Perda da tolerância à dessecação em sementes de Copaifera langsdorffii durante a germinação
title Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
spellingShingle Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
Pereira, Wilson Vicente Souza
Copaiba
Desiccation sensitivity
Imbibition
Copaíba
Sensibilidade à dessecação
Embebição
title_short Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
title_full Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
title_fullStr Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
title_full_unstemmed Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
title_sort Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germination
dc.creator.none.fl_str_mv Pereira, Wilson Vicente Souza
Faria, José Marcio Rocha
Tonetti, Olivia Alvina Oliveira
Silva, Edvaldo Aparecido Amaral da [UNESP]
author Pereira, Wilson Vicente Souza
author_facet Pereira, Wilson Vicente Souza
Faria, José Marcio Rocha
Tonetti, Olivia Alvina Oliveira
Silva, Edvaldo Aparecido Amaral da [UNESP]
author_role author
author2 Faria, José Marcio Rocha
Tonetti, Olivia Alvina Oliveira
Silva, Edvaldo Aparecido Amaral da [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Lavras (UFLA)
Universidade Estadual Paulista (Unesp)
dc.subject.por.fl_str_mv Copaiba
Desiccation sensitivity
Imbibition
Copaíba
Sensibilidade à dessecação
Embebição
topic Copaiba
Desiccation sensitivity
Imbibition
Copaíba
Sensibilidade à dessecação
Embebição
description This study evaluated the loss of desiccation tolerance in C. langsdorffii seeds during the germination process. Seeds were imbibed for 24, 48, 72, 96, 120 and 144 hours and dried to the initial moisture content, kept in this state for 3 days after which they were submitted to pre-humidification and rehydration. Ultraestructural evaluations were done aiming to observe the cell damage caused by the dry process. Desiccation tolerance was evaluated in terms of the percentage of normal seedlings. Seeds not submitted to the drying process presented 61% of normal seedlings, and after 24 hours of imbibition, followed by drying, the seeds presented the same percentage of survival. However, after 48 hours of imbibition, seeds started to lose the desiccation tolerance. There was twenty six percent of normal seedlings formed from seeds imbibed for 96 hours and later dried and rehydrated. Only 5% of seeds imbibed for 144 hours, dried and rehydrated formed normal seedlings. At 144 hours of imbibition followed the dry process, there was damage into the cell structure, indicating that the seeds were unable to keep the cell structure during the drying process. Copaifera langsdorffii seeds loses the desiccation tolerance at the start of Phase 2 of imbibition.
publishDate 2014
dc.date.none.fl_str_mv 2014-05-01
2015-11-03T15:29:26Z
2015-11-03T15:29:26Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000200501&lng=en&nrm=iso&tlng=en
Brazilian Journal Of Biology. Sao Carlos: Int Inst Ecology, v. 74, n. 2, p. 501-508, 2014.
1519-6984
http://hdl.handle.net/11449/130121
10.1590/1519-6984.19712
S1519-69842014000200501
WOS:000340836300029
S1519-69842014000200501.pdf
9972643774491301
0000-0001-6454-1488
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000200501&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/130121
identifier_str_mv Brazilian Journal Of Biology. Sao Carlos: Int Inst Ecology, v. 74, n. 2, p. 501-508, 2014.
1519-6984
10.1590/1519-6984.19712
S1519-69842014000200501
WOS:000340836300029
S1519-69842014000200501.pdf
9972643774491301
0000-0001-6454-1488
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Journal Of Biology
0.784
0,523
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 501-508
application/pdf
dc.publisher.none.fl_str_mv Int Inst Ecology
publisher.none.fl_str_mv Int Inst Ecology
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
_version_ 1853672130865004544
spelling Loss of desiccation tolerance in Copaifera langsdorffii Desf. seeds during germinationPerda da tolerância à dessecação em sementes de Copaifera langsdorffii durante a germinaçãoCopaibaDesiccation sensitivityImbibitionCopaíbaSensibilidade à dessecaçãoEmbebiçãoThis study evaluated the loss of desiccation tolerance in C. langsdorffii seeds during the germination process. Seeds were imbibed for 24, 48, 72, 96, 120 and 144 hours and dried to the initial moisture content, kept in this state for 3 days after which they were submitted to pre-humidification and rehydration. Ultraestructural evaluations were done aiming to observe the cell damage caused by the dry process. Desiccation tolerance was evaluated in terms of the percentage of normal seedlings. Seeds not submitted to the drying process presented 61% of normal seedlings, and after 24 hours of imbibition, followed by drying, the seeds presented the same percentage of survival. However, after 48 hours of imbibition, seeds started to lose the desiccation tolerance. There was twenty six percent of normal seedlings formed from seeds imbibed for 96 hours and later dried and rehydrated. Only 5% of seeds imbibed for 144 hours, dried and rehydrated formed normal seedlings. At 144 hours of imbibition followed the dry process, there was damage into the cell structure, indicating that the seeds were unable to keep the cell structure during the drying process. Copaifera langsdorffii seeds loses the desiccation tolerance at the start of Phase 2 of imbibition.Este estudo avaliou a perda da tolerância à dessecação em sementes de C. langsdorffii durante o processo germinativo. Sementes foram embebidas por 24, 48, 72, 96, 120 e 144 horas e depois secas até a umidade inicial, sendo mantidas neste estado durante 3 dias, quando então foram submetidas a pré-umidificação e reidratação. Avaliações ultraestruturais foram realizadas objetivando observar danos nas células causados pelo processo de secagem. A tolerância à dessecação foi avaliada pelo percentual de plântulas normais. Sementes não submetidas ao processo de secagem apresentaram 61% de plântulas normais, sendo que após 24 horas de embebição seguida de secagem, houve o mesmo percentual de sobrevivência. Contudo, após 48 horas de embebição, as sementes começaram a perder a tolerância à dessecação. Vinte e seis por cento de sementes formaram plântulas normais após embeberem por 96 horas e secas. Apenas 5% de sementes embebidas por 144 horas e secas formaram plântulas normais. Após 144 horas de embebição, seguida de secagem, verificou-se danos na estrutura celular, o que indica que as sementes não são capazes de manter a estrutura celular durante o processo de secagem. Verificou-se no presente estudo que sementes de C. langsdorffii perdem a tolerância à dessecação no inicio da fase 2 da embebição.Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Federal de Lavras, Laboratório de Sementes Florestais, Departamento de Ciências FlorestaisUniversidade Estadual Paulista, Departamento de Produção e Melhoramento Vegetal, Faculdade de Ciências Agronômicas de BotucatuCNPq: 482015/2010-1Int Inst EcologyUniversidade Federal de Lavras (UFLA)Universidade Estadual Paulista (Unesp)2015-11-03T15:29:26Z2015-11-03T15:29:26Z2014-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article501-508application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000200501&lng=en&nrm=iso&tlng=enBrazilian Journal Of Biology. Sao Carlos: Int Inst Ecology, v. 74, n. 2, p. 501-508, 2014.1519-6984http://hdl.handle.net/11449/13012110.1590/1519-6984.19712S1519-69842014000200501WOS:000340836300029S1519-69842014000200501.pdf99726437744913010000-0001-6454-1488Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal Of Biology0.7840,523info:eu-repo/semantics/openAccessPereira, Wilson Vicente SouzaFaria, José Marcio RochaTonetti, Olivia Alvina OliveiraSilva, Edvaldo Aparecido Amaral da [UNESP]2025-08-29T06:39:05Zoai:repositorio.unesp.br:11449/130121Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-08-29T06:39:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
score 15.301603

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