Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination

Detalhes bibliográficos
Autor(a) principal: Zucareli, Valdir
Data de Publicação: 2011
Outros Autores: Amaro, Amanda Cristina Esteves, Silvério, Evandro Vargas, Ferreira, Gisela
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/3380
Resumo: The aim of this experiment was to overcome the dormancy and the effect of different temperatures in Dioclea violacea seeds’ germination. Two experiments were developed. In the first, it was studied the use of chemical and mechanical scarification in the overcome dormancy seeds. Therefore, were accomplished seven treatments with four replications of 15 seeds each. The experiment constituted of one testify treatment, five chemical scarification treatments (1, 2, 3, 4 and 5 hours of immersion in concentrated sulfuric acid – H2SO4) and one mechanical scarification treatment. In the second experiment, was studied the temperature effects on germination seeds; it was constituted on six treatments with four replications with 12 seeds each. The treatments constituted of constant temperatures 15°C, 20°C, 25°C, 30°C and 35°C and the alternate temperature 20-30°C (16 and 8 hours, respectively). Germination, died seeds, hard seeds percentages, medium time germination and germination speed index were determined. The data were submitted to the variance analysis, and the averages compared by the Tukey test to 5% of probability and regression analysis. It was observed that the dormancy overcome of Dioclea violacea seeds can be done with chemical scarification, 3 to 5 hours in H2SO4, as much as with mechanical scarification. Also, it was possible to conclude that Dioclea violacea seeds germinate in a wide temperature strip, with constant temperatures of 20°C, 25°C and 35°C benefit the germination process.
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spelling Overcoming dormancy and different temperatures in dioclea violacea seeds’ germinationMétodos de superação da dormência e temperatura na germinação de sementes de dioclea violáceaLianasFabaceaeScarificationLianasFabaceaeEscarificaçãoThe aim of this experiment was to overcome the dormancy and the effect of different temperatures in Dioclea violacea seeds’ germination. Two experiments were developed. In the first, it was studied the use of chemical and mechanical scarification in the overcome dormancy seeds. Therefore, were accomplished seven treatments with four replications of 15 seeds each. The experiment constituted of one testify treatment, five chemical scarification treatments (1, 2, 3, 4 and 5 hours of immersion in concentrated sulfuric acid – H2SO4) and one mechanical scarification treatment. In the second experiment, was studied the temperature effects on germination seeds; it was constituted on six treatments with four replications with 12 seeds each. The treatments constituted of constant temperatures 15°C, 20°C, 25°C, 30°C and 35°C and the alternate temperature 20-30°C (16 and 8 hours, respectively). Germination, died seeds, hard seeds percentages, medium time germination and germination speed index were determined. The data were submitted to the variance analysis, and the averages compared by the Tukey test to 5% of probability and regression analysis. It was observed that the dormancy overcome of Dioclea violacea seeds can be done with chemical scarification, 3 to 5 hours in H2SO4, as much as with mechanical scarification. Also, it was possible to conclude that Dioclea violacea seeds germinate in a wide temperature strip, with constant temperatures of 20°C, 25°C and 35°C benefit the germination process.Este trabalho objetivou avaliar métodos de superação da dormência e o efeito de diferentes temperaturas na germinação de sementes de Dioclea violacea. O trabalho foi subdividido em dois experimentos. No primeiro, foi estudado o uso de escarificação química e mecânica na superação da dormência das sementes. Para tanto, foram realizados sete tratamentos com quatro repetições de 15 sementes por parcela. O experimento constituiu-se de um tratamento testemunha, cinco tratamentos com escarificação química (1, 2, 3, 4 e 5 horas de imersão em ácido sulfúrico concentrado - H2SO4) e um tratamento com escarificação mecânica. No segundo experimento, foi estudado o efeito da temperatura na germinação das sementes e constou de seis tratamentos com quatro repetições de 12 sementes por parcela. Os tratamentos foram constituídos pelas temperaturas constantes 15ºC, 20ºC, 25ºC, 30ºC e 35ºC e pela temperatura alternada 20-30ºC (16 e 8 horas, respectivamente). Foram determinadas as porcentagens de germinação, de sementes mortas e de sementes duras, o tempo médio de germinação e o índice de velocidade de germinação. Os dados foram submetidos à análise de variância, e as médias, comparadas pelo teste Tukey, a 5% de probabilidade e análise de regressão.   A superação da dormência de sementes de Dioclea violacea pode ser feita tanto por escarificação química, de 3 a 5 horas em H2SO4 como por escarificação mecânica. As sementes de Dioclea violacea germinam em ampla faixa de temperatura, sendo que temperaturas constantes de 20ºC, 25°C e 35ºC beneficiaram o processo. UEL2011-02-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/338010.5433/1679-0359.2010v31n4Sup1p1305Semina: Ciências Agrárias; Vol. 31 No. 4Sup1 (2010); 1305-1312Semina: Ciências Agrárias; v. 31 n. 4Sup1 (2010); 1305-13121679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3380/6927Zucareli, ValdirAmaro, Amanda Cristina EstevesSilvério, Evandro VargasFerreira, Giselainfo:eu-repo/semantics/openAccess2015-11-19T18:38:09Zoai:ojs.pkp.sfu.ca:article/3380Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:38:09Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
Métodos de superação da dormência e temperatura na germinação de sementes de dioclea violácea
title Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
spellingShingle Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
Zucareli, Valdir
Lianas
Fabaceae
Scarification
Lianas
Fabaceae
Escarificação
title_short Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
title_full Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
title_fullStr Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
title_full_unstemmed Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
title_sort Overcoming dormancy and different temperatures in dioclea violacea seeds’ germination
author Zucareli, Valdir
author_facet Zucareli, Valdir
Amaro, Amanda Cristina Esteves
Silvério, Evandro Vargas
Ferreira, Gisela
author_role author
author2 Amaro, Amanda Cristina Esteves
Silvério, Evandro Vargas
Ferreira, Gisela
author2_role author
author
author
dc.contributor.author.fl_str_mv Zucareli, Valdir
Amaro, Amanda Cristina Esteves
Silvério, Evandro Vargas
Ferreira, Gisela
dc.subject.por.fl_str_mv Lianas
Fabaceae
Scarification
Lianas
Fabaceae
Escarificação
topic Lianas
Fabaceae
Scarification
Lianas
Fabaceae
Escarificação
description The aim of this experiment was to overcome the dormancy and the effect of different temperatures in Dioclea violacea seeds’ germination. Two experiments were developed. In the first, it was studied the use of chemical and mechanical scarification in the overcome dormancy seeds. Therefore, were accomplished seven treatments with four replications of 15 seeds each. The experiment constituted of one testify treatment, five chemical scarification treatments (1, 2, 3, 4 and 5 hours of immersion in concentrated sulfuric acid – H2SO4) and one mechanical scarification treatment. In the second experiment, was studied the temperature effects on germination seeds; it was constituted on six treatments with four replications with 12 seeds each. The treatments constituted of constant temperatures 15°C, 20°C, 25°C, 30°C and 35°C and the alternate temperature 20-30°C (16 and 8 hours, respectively). Germination, died seeds, hard seeds percentages, medium time germination and germination speed index were determined. The data were submitted to the variance analysis, and the averages compared by the Tukey test to 5% of probability and regression analysis. It was observed that the dormancy overcome of Dioclea violacea seeds can be done with chemical scarification, 3 to 5 hours in H2SO4, as much as with mechanical scarification. Also, it was possible to conclude that Dioclea violacea seeds germinate in a wide temperature strip, with constant temperatures of 20°C, 25°C and 35°C benefit the germination process.
publishDate 2011
dc.date.none.fl_str_mv 2011-02-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3380
10.5433/1679-0359.2010v31n4Sup1p1305
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3380
identifier_str_mv 10.5433/1679-0359.2010v31n4Sup1p1305
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/3380/6927
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 UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 31 No. 4Sup1 (2010); 1305-1312
Semina: Ciências Agrárias; v. 31 n. 4Sup1 (2010); 1305-1312
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
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