TREATMENTS FOR SEED DORMANCY RELEASE IN Brachiaria humidicola (Rendle) Schweick

Detalhes bibliográficos
Autor(a) principal: Costa, Caroline Jácome
Data de Publicação: 2011
Outros Autores: Araújo, Raphael Branco de, Villas Bôas, Hugo Dias da Costa
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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spelling 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
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