Methods for overcoming dormancy of Parkinsonia aculeata L. seeds
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12408 |
Resumo: | The Parkinsonia aculeata L seeds have tegumentary dormancy, which makes them last for a long period in the seed bank of the earth so that their germination occurs in favorable conditions. Our aim was to evaluate the influence of pregermination treatments for overcoming the dormancy of P. aculeata seeds. The seeds were submitted to the following treatments: sample – intact seeds (T1); mechanical scarification with water sandpaper no. 80, followed by room temperature water soaking for 12 and 24 hours (T3 e T4, respectively); immersion in sulfuric acid for 5, 10, 15 and 20 minutes (T5, T6, T7 e T8, respectively); immersion in water in 60ºC, 70ºC, 80ºC and 90ºC for one minute (T9, T10, T11 e T12, respectively). The characteristics evaluated were: percentage of emergence, emergence first count, emergence speed index, height and dry weight of seedlings. In the treatments that involved immersion in water in 60ºC, 70ºC, 80ºC and 90ºC, a low percentage of emergence was obtained. The P. aculeate seeds tegumentary dormancy is overcome with maximum efficiency by the mechanical scarification with sandpaper, suggesting that, in natural environment the movement of contraction and expansion of the soil results in a mechanical scarification of the tegument of the seeds, thus, allowing a high percentage of germination with distribution as time passes. |
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Semina. Ciências Agrárias (Online) |
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Methods for overcoming dormancy of Parkinsonia aculeata L. seedsMétodos para superação da dormência de sementes de Parkinsonia aculeata L.Biological invasionGerminationPregermination treatments.Invasão biológicaGerminaçãoTratamentos pré-germinativos.The Parkinsonia aculeata L seeds have tegumentary dormancy, which makes them last for a long period in the seed bank of the earth so that their germination occurs in favorable conditions. Our aim was to evaluate the influence of pregermination treatments for overcoming the dormancy of P. aculeata seeds. The seeds were submitted to the following treatments: sample – intact seeds (T1); mechanical scarification with water sandpaper no. 80, followed by room temperature water soaking for 12 and 24 hours (T3 e T4, respectively); immersion in sulfuric acid for 5, 10, 15 and 20 minutes (T5, T6, T7 e T8, respectively); immersion in water in 60ºC, 70ºC, 80ºC and 90ºC for one minute (T9, T10, T11 e T12, respectively). The characteristics evaluated were: percentage of emergence, emergence first count, emergence speed index, height and dry weight of seedlings. In the treatments that involved immersion in water in 60ºC, 70ºC, 80ºC and 90ºC, a low percentage of emergence was obtained. The P. aculeate seeds tegumentary dormancy is overcome with maximum efficiency by the mechanical scarification with sandpaper, suggesting that, in natural environment the movement of contraction and expansion of the soil results in a mechanical scarification of the tegument of the seeds, thus, allowing a high percentage of germination with distribution as time passes. As sementes de Parkinsonia aculeata L. são dotadas de dormência tegumentar, o que lhes permite um longo período de sobrevivência no banco de sementes do solo, para que a germinação ocorra em condições favoráveis. Objetivou-se avaliar a influência de tratamentos pré-germinativos na superação da dormência de sementes de P. aculeata. As sementes foram submetidas aos seguintes tratamentos: testemunha – sementes intactas (T1); escarificação mecânica com lixa d’água n° 80 na região lateral da semente (T2); escarificação mecânica com lixa d’água n° 80, seguida de embebição em água à temperatura ambiente por 12 e 24 horas (T3 e T4, respectivamente); imersão em ácido sulfúrico por 5, 10, 15 e 20 minutos (T5, T6, T7 e T8, respectivamente) e imersão em água na temperatura de 60, 70, 80 e 90°C por 1 minuto (T9, T10, T11 e T12, respectivamente). As características avaliadas foram: porcentagem de emergência, primeira contagem de emergência, índice de velocidade de emergência, comprimento e massa seca de plântulas. Para os tratamentos que envolveram a imersão em água na temperatura de 60, 70, 80 e 90°C verificou-se baixos percentuais de emergência. A dormência tegumentar de sementes de P. aculeata é superada com máxima eficiência pela escarificação mecânica com lixa d’ água, sugerindo que em ambiente natural, o movimento de contração e expansão dos solos resulta em uma escarificação mecânica no tegumento das sementes, permitindo, assim, alta taxa de germinação com distribuição ao longo do tempo.UEL2015-06-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa empirica de campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1240810.5433/1679-0359.2015v36n3p1191Semina: Ciências Agrárias; Vol. 36 No. 3 (2015); 1191-1202Semina: Ciências Agrárias; v. 36 n. 3 (2015); 1191-12021679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12408/pdf_667Copyright (c) 2015 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessAgra, Pollyanna Freire MontenegroGuedes, Roberta SalesSilva, Maria Lúcia Maurício daSouza, Vênia Camelo deAndrade, Leonaldo Alves deAlves, Edna Ursulino2023-01-13T12:27:47Zoai:ojs.pkp.sfu.ca:article/12408Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2023-01-13T12:27:47Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds Métodos para superação da dormência de sementes de Parkinsonia aculeata L. |
title |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds |
spellingShingle |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds Agra, Pollyanna Freire Montenegro Biological invasion Germination Pregermination treatments. Invasão biológica Germinação Tratamentos pré-germinativos. |
title_short |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds |
title_full |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds |
title_fullStr |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds |
title_full_unstemmed |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds |
title_sort |
Methods for overcoming dormancy of Parkinsonia aculeata L. seeds |
author |
Agra, Pollyanna Freire Montenegro |
author_facet |
Agra, Pollyanna Freire Montenegro Guedes, Roberta Sales Silva, Maria Lúcia Maurício da Souza, Vênia Camelo de Andrade, Leonaldo Alves de Alves, Edna Ursulino |
author_role |
author |
author2 |
Guedes, Roberta Sales Silva, Maria Lúcia Maurício da Souza, Vênia Camelo de Andrade, Leonaldo Alves de Alves, Edna Ursulino |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Agra, Pollyanna Freire Montenegro Guedes, Roberta Sales Silva, Maria Lúcia Maurício da Souza, Vênia Camelo de Andrade, Leonaldo Alves de Alves, Edna Ursulino |
dc.subject.por.fl_str_mv |
Biological invasion Germination Pregermination treatments. Invasão biológica Germinação Tratamentos pré-germinativos. |
topic |
Biological invasion Germination Pregermination treatments. Invasão biológica Germinação Tratamentos pré-germinativos. |
description |
The Parkinsonia aculeata L seeds have tegumentary dormancy, which makes them last for a long period in the seed bank of the earth so that their germination occurs in favorable conditions. Our aim was to evaluate the influence of pregermination treatments for overcoming the dormancy of P. aculeata seeds. The seeds were submitted to the following treatments: sample – intact seeds (T1); mechanical scarification with water sandpaper no. 80, followed by room temperature water soaking for 12 and 24 hours (T3 e T4, respectively); immersion in sulfuric acid for 5, 10, 15 and 20 minutes (T5, T6, T7 e T8, respectively); immersion in water in 60ºC, 70ºC, 80ºC and 90ºC for one minute (T9, T10, T11 e T12, respectively). The characteristics evaluated were: percentage of emergence, emergence first count, emergence speed index, height and dry weight of seedlings. In the treatments that involved immersion in water in 60ºC, 70ºC, 80ºC and 90ºC, a low percentage of emergence was obtained. The P. aculeate seeds tegumentary dormancy is overcome with maximum efficiency by the mechanical scarification with sandpaper, suggesting that, in natural environment the movement of contraction and expansion of the soil results in a mechanical scarification of the tegument of the seeds, thus, allowing a high percentage of germination with distribution as time passes. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06-09 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa empirica de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12408 10.5433/1679-0359.2015v36n3p1191 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12408 |
identifier_str_mv |
10.5433/1679-0359.2015v36n3p1191 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12408/pdf_667 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 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. 36 No. 3 (2015); 1191-1202 Semina: Ciências Agrárias; v. 36 n. 3 (2015); 1191-1202 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 |
_version_ |
1799306067386040320 |