THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke

Detalhes bibliográficos
Autor(a) principal: Nogueira, Francisco Carlos Barboza
Data de Publicação: 2014
Outros Autores: Gallão, Maria Izabel, Bezerra, Antônio Marcos Esmeraldo, Medeiros Filho, Sebastião
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/16613
Resumo: http://dx.doi.org/10.5902/1980509816613The knowledge about the germination behavior of a plant species is major important to the adoption of the techniques that aim its spreading. The work analyzed the seed germination process of Dalbergia cearensis Ducke in the presence and absence of light, that was subjected to constant temperatures of 20, 25, 30, 35, 40 ºC and alternating temperatures of 20 - 45 ºC, all under a photoperiod of 12 hours and continuous darkness. The variables evaluated were: the percentage, the speed and the medium time of the germination. The seeds germinated in the presence and absence of light and the higher percentages of germination were 25, 30 and 35 ºC. Thus, to trigger the germination process of this species, there is no need of exposure or absence of light. So they can be characterized as neutral photoblastic seeds. No germination was observed at alternating temperatures of 20 ºC to 45 ºC. The optimum temperature range between 25 to 35 ºC increases speed and reduces the average time of germination of D. cearensis for both the dark and for light.
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spelling THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis DuckeEFEITO DA TEMPERATURA E LUZ NA GERMINAÇÃO DE SEMENTES DE Dalbergia cearensis Duckecaatingaecophysiologyforest seedsphotoblastism.caatingaecofisiologiafotoblastismosementes florestais.http://dx.doi.org/10.5902/1980509816613The knowledge about the germination behavior of a plant species is major important to the adoption of the techniques that aim its spreading. The work analyzed the seed germination process of Dalbergia cearensis Ducke in the presence and absence of light, that was subjected to constant temperatures of 20, 25, 30, 35, 40 ºC and alternating temperatures of 20 - 45 ºC, all under a photoperiod of 12 hours and continuous darkness. The variables evaluated were: the percentage, the speed and the medium time of the germination. The seeds germinated in the presence and absence of light and the higher percentages of germination were 25, 30 and 35 ºC. Thus, to trigger the germination process of this species, there is no need of exposure or absence of light. So they can be characterized as neutral photoblastic seeds. No germination was observed at alternating temperatures of 20 ºC to 45 ºC. The optimum temperature range between 25 to 35 ºC increases speed and reduces the average time of germination of D. cearensis for both the dark and for light.http://dx.doi.org/10.5902/1980509816613O conhecimento do comportamento germinativo de uma espécie vegetal é de significativa importância para a adoção de técnicas que visam sua propagação. O trabalho avaliou o processo germinativo de sementes de Dalbergia cearensis Ducke na presença e ausência de luz, submetidas a temperaturas constantes de 20, 25, 30, 35 e 40 ºC e alternada de 20-45 ºC, sob fotoperíodo de 12 horas e escuro contínuo. As variáveis avaliadas foram: a porcentagem, a velocidade e o tempo médio de germinação. As sementes germinaram na presença e na ausência de luz, com as maiores porcentagens de germinação alcançadas nas temperaturas de 25, 30 e 35ºC. Desse modo, para desencadear o processo germinativo dessa espécie, não há necessidade da incidência ou ausência de luz, podendo-se caracterizar suas sementes como fotoblásticas neutras. A germinação foi nula no regime de temperatura alternada. A faixa ótima de temperatura entre 25 a 35ºC aumenta a velocidade e reduz o tempo médio de germinação de sementes de D. cearensis, tanto para o escuro quanto para luz.Universidade Federal de Santa Maria2014-12-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/1661310.5902/1980509816613Ciência Florestal; Vol. 24 No. 4 (2014); 997-1007Ciência Florestal; v. 24 n. 4 (2014); 997-10071980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/16613/pdfNogueira, Francisco Carlos BarbozaGallão, Maria IzabelBezerra, Antônio Marcos EsmeraldoMedeiros Filho, Sebastiãoinfo:eu-repo/semantics/openAccess2017-04-12T14:16:36Zoai:ojs.pkp.sfu.ca:article/16613Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-12T14:16:36Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
EFEITO DA TEMPERATURA E LUZ NA GERMINAÇÃO DE SEMENTES DE Dalbergia cearensis Ducke
title THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
spellingShingle THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
Nogueira, Francisco Carlos Barboza
caatinga
ecophysiology
forest seeds
photoblastism.
caatinga
ecofisiologia
fotoblastismo
sementes florestais.
title_short THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
title_full THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
title_fullStr THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
title_full_unstemmed THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
title_sort THE EFFECT OF THE TEMPERATURE AND LIGHT ON THE SEED GERMINATION OF Dalbergia cearensis Ducke
author Nogueira, Francisco Carlos Barboza
author_facet Nogueira, Francisco Carlos Barboza
Gallão, Maria Izabel
Bezerra, Antônio Marcos Esmeraldo
Medeiros Filho, Sebastião
author_role author
author2 Gallão, Maria Izabel
Bezerra, Antônio Marcos Esmeraldo
Medeiros Filho, Sebastião
author2_role author
author
author
dc.contributor.author.fl_str_mv Nogueira, Francisco Carlos Barboza
Gallão, Maria Izabel
Bezerra, Antônio Marcos Esmeraldo
Medeiros Filho, Sebastião
dc.subject.por.fl_str_mv caatinga
ecophysiology
forest seeds
photoblastism.
caatinga
ecofisiologia
fotoblastismo
sementes florestais.
topic caatinga
ecophysiology
forest seeds
photoblastism.
caatinga
ecofisiologia
fotoblastismo
sementes florestais.
description http://dx.doi.org/10.5902/1980509816613The knowledge about the germination behavior of a plant species is major important to the adoption of the techniques that aim its spreading. The work analyzed the seed germination process of Dalbergia cearensis Ducke in the presence and absence of light, that was subjected to constant temperatures of 20, 25, 30, 35, 40 ºC and alternating temperatures of 20 - 45 ºC, all under a photoperiod of 12 hours and continuous darkness. The variables evaluated were: the percentage, the speed and the medium time of the germination. The seeds germinated in the presence and absence of light and the higher percentages of germination were 25, 30 and 35 ºC. Thus, to trigger the germination process of this species, there is no need of exposure or absence of light. So they can be characterized as neutral photoblastic seeds. No germination was observed at alternating temperatures of 20 ºC to 45 ºC. The optimum temperature range between 25 to 35 ºC increases speed and reduces the average time of germination of D. cearensis for both the dark and for light.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-26
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/16613
10.5902/1980509816613
url https://periodicos.ufsm.br/cienciaflorestal/article/view/16613
identifier_str_mv 10.5902/1980509816613
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/16613/pdf
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 Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Florestal; Vol. 24 No. 4 (2014); 997-1007
Ciência Florestal; v. 24 n. 4 (2014); 997-1007
1980-5098
0103-9954
reponame:Ciência Florestal (Online)
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Florestal (Online)
collection Ciência Florestal (Online)
repository.name.fl_str_mv Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv ||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br
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