TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/15100 |
Resumo: | Most of the tropical forages is affected by seed dormancy, which can hinder the determination of its physiological quality, field seedling emergence, and the establishment of pastures. This study aimed to evaluate the effectiveness of acid scarification and application of germination promoters on the dormancy release of stored seeds of Brachiaria humidicola. Seeds stored during nine and 21 months were scarified with the aid of concentrated sulfuric acid. Afterwards, the seeds were placed to germinate on a blotter paper moistened with the following solutions: KNO3 (0.2%), gibberellic acid (100 mg L-1), H2O2 (0.30%), and distilled water. The seeds remained for 21 days under an alternating temperatures regime (15-35ºC) and light cycles (8 hours of light/16 hours of darkness), when the percentages of germination and dormant seeds were evaluated. Acid scarification was more effective on dormancy release in the seeds stored up to nine months, in comparison to the ones stored for 21 months, with reduction of dormant seeds percentage from 84% to 36%. Acid scarification of seeds stored up to nine months, followed by the gibberellic acid treatment, or the storage of seeds up to 21 months resulted in a 60% germination rate. The storage of B. humidicola seeds up to 21 months is more effective for dormancy release than the acid scarification or the application of germination promoters. |
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TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) SchweickTRATAMENTOS PARA A SUPERAÇÃO DE DORMÊNCIA EM SEMENTES DE Brachiaria humidicola (Rendle) SchweickCreeping signal grassacid scarificationstorage.Quicuio-da-Amazôniaescarificação ácidaarmazenamento.Most of the tropical forages is affected by seed dormancy, which can hinder the determination of its physiological quality, field seedling emergence, and the establishment of pastures. This study aimed to evaluate the effectiveness of acid scarification and application of germination promoters on the dormancy release of stored seeds of Brachiaria humidicola. Seeds stored during nine and 21 months were scarified with the aid of concentrated sulfuric acid. Afterwards, the seeds were placed to germinate on a blotter paper moistened with the following solutions: KNO3 (0.2%), gibberellic acid (100 mg L-1), H2O2 (0.30%), and distilled water. The seeds remained for 21 days under an alternating temperatures regime (15-35ºC) and light cycles (8 hours of light/16 hours of darkness), when the percentages of germination and dormant seeds were evaluated. Acid scarification was more effective on dormancy release in the seeds stored up to nine months, in comparison to the ones stored for 21 months, with reduction of dormant seeds percentage from 84% to 36%. Acid scarification of seeds stored up to nine months, followed by the gibberellic acid treatment, or the storage of seeds up to 21 months resulted in a 60% germination rate. The storage of B. humidicola seeds up to 21 months is more effective for dormancy release than the acid scarification or the application of germination promoters.A maioria das gramíneas forrageiras tropicais é afetada pela dormência das sementes, a qual pode dificultar a determinação da sua qualidade fisiológica, emergência das plântulas no campo e o estabelecimento das pastagens. Objetivou-se, no presente trabalho, verificar a eficácia da escarificação ácida e da aplicação de substâncias promotoras à germinação na superação da dormência de sementes armazenadas de Brachiaria humidicola. Sementes armazenadas por nove e 21 meses foram escarificadas, empregando-se ácido sulfúrico concentrado, e colocadas para germinar em substrato umedecido com as seguintes soluções: nitrato de potássio (0,2%), ácido giberélico (100 mg L-1), peróxido de hidrogênio (0,30%) e água destilada. As sementes permaneceram por 21 dias sob temperaturas alternadas de 15-35ºC e fotoperíodo de 8 horas, sendo avaliadas quanto à percentagem de plântulas normais e de sementes dormentes. Nas sementes armazenadas por nove meses, a escarificação ácida foi mais efetiva do que nas sementes armazenadas por 21 meses, ocorrendo redução da percentagem de sementes dormentes de 84% para 36%. A escarificação ácida das sementes armazenadas por nove meses, seguida do tratamento com ácido giberélico, ou o armazenamento das sementes por 21 meses resultou na obtenção de 60% de plântulas normais. O armazenamento das sementes de B. humidicola por 21 meses é mais efetivo para a superação da dormência do que a escarificação ácida ou a aplicação de substâncias promotoras à germinação.Escola de Agronomia - Universidade Federal de Goiás2011-11-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Experimentalapplication/savehttps://revistas.ufg.br/pat/article/view/15100Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 41, n. 4, Oct./Dec. 2011; 519-524Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 41, n. 4, out./dez. 2011; 519-524Pesquisa Agropecuária Tropical; v. 41, n. 4, out./dez. 2011; 519-5241983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/15100/9916Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessCosta, Caroline JácomeAraújo, Raphael Branco deVillas Bôas, Hugo Dias da Costa2020-07-09T19:31:36Zoai:ojs.revistas.ufg.br:article/15100Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:52.942957Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick TRATAMENTOS PARA A SUPERAÇÃO DE DORMÊNCIA EM SEMENTES DE Brachiaria humidicola (Rendle) Schweick |
title |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick |
spellingShingle |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick Costa, Caroline Jácome Creeping signal grass acid scarification storage. Quicuio-da-Amazônia escarificação ácida armazenamento. |
title_short |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick |
title_full |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick |
title_fullStr |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick |
title_full_unstemmed |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick |
title_sort |
TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick |
author |
Costa, Caroline Jácome |
author_facet |
Costa, Caroline Jácome Araújo, Raphael Branco de Villas Bôas, Hugo Dias da Costa |
author_role |
author |
author2 |
Araújo, Raphael Branco de Villas Bôas, Hugo Dias da Costa |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Costa, Caroline Jácome Araújo, Raphael Branco de Villas Bôas, Hugo Dias da Costa |
dc.subject.por.fl_str_mv |
Creeping signal grass acid scarification storage. Quicuio-da-Amazônia escarificação ácida armazenamento. |
topic |
Creeping signal grass acid scarification storage. Quicuio-da-Amazônia escarificação ácida armazenamento. |
description |
Most of the tropical forages is affected by seed dormancy, which can hinder the determination of its physiological quality, field seedling emergence, and the establishment of pastures. This study aimed to evaluate the effectiveness of acid scarification and application of germination promoters on the dormancy release of stored seeds of Brachiaria humidicola. Seeds stored during nine and 21 months were scarified with the aid of concentrated sulfuric acid. Afterwards, the seeds were placed to germinate on a blotter paper moistened with the following solutions: KNO3 (0.2%), gibberellic acid (100 mg L-1), H2O2 (0.30%), and distilled water. The seeds remained for 21 days under an alternating temperatures regime (15-35ºC) and light cycles (8 hours of light/16 hours of darkness), when the percentages of germination and dormant seeds were evaluated. Acid scarification was more effective on dormancy release in the seeds stored up to nine months, in comparison to the ones stored for 21 months, with reduction of dormant seeds percentage from 84% to 36%. Acid scarification of seeds stored up to nine months, followed by the gibberellic acid treatment, or the storage of seeds up to 21 months resulted in a 60% germination rate. The storage of B. humidicola seeds up to 21 months is more effective for dormancy release than the acid scarification or the application of germination promoters. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-11-24 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Experimental |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/15100 |
url |
https://revistas.ufg.br/pat/article/view/15100 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/15100/9916 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/save |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 41, n. 4, Oct./Dec. 2011; 519-524 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 41, n. 4, out./dez. 2011; 519-524 Pesquisa Agropecuária Tropical; v. 41, n. 4, out./dez. 2011; 519-524 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874817759903744 |