Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)

Detalhes bibliográficos
Autor(a) principal: Roso,R.
Data de Publicação: 2021
Outros Autores: Nunes,U. R., Müller,C. A., Paranhos,J. T., Lopes,S. J., Dornelles,S. H. B., Bertagnolli,C. M., Huth,C., Forte,C. T., Menegaes,J. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842021000300650
Resumo: Abstract Light is considered a factor that influences the seed germination of many weed species, and it can signal whether the environmental conditions are favorable or are not favorable for germination. We aimed to study if there is an influence of light quality and dormancy overcoming in seed germination of Echium plantagineum L. We carried out a 2 x 6 factorial experiment, with and without dormancy overcoming with potassium nitrate followed by immersion in gibberellic acid; six light qualities, obtained through the light filters: blue, green, red, far-red, white light and absence of light. The evaluations performed were germination speed index (GSI), average germination time (AGT), germination at the four and 14 days after seeding (DAS), accumulated germination and relative frequency of germination. We observed significant interaction among the light qualities and seed dormancy overcoming or not for the studied variables. There was no significant effect of light qualities, in the evaluated variables, when performing dormancy overcoming, presenting germination above 90% in all the light qualities. However, without dormancy overcoming, we observed greater GSI, germination at four and 14 DAS for the red light filter with 5, 4, 29 and 45%, respectively. When the seeds were submitted to the absence of light, and without dormancy overcoming, there was only 7% of germination at 14 DAS. The seeds of E. plantagineum presented greater germination under incidence of red light, without dormancy overcoming, being classified as preferably positively photoblastics, provided that the dormancy is not overcome.
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spelling Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)purple flowerphotoblastismphytochromecellophane paperweedAbstract Light is considered a factor that influences the seed germination of many weed species, and it can signal whether the environmental conditions are favorable or are not favorable for germination. We aimed to study if there is an influence of light quality and dormancy overcoming in seed germination of Echium plantagineum L. We carried out a 2 x 6 factorial experiment, with and without dormancy overcoming with potassium nitrate followed by immersion in gibberellic acid; six light qualities, obtained through the light filters: blue, green, red, far-red, white light and absence of light. The evaluations performed were germination speed index (GSI), average germination time (AGT), germination at the four and 14 days after seeding (DAS), accumulated germination and relative frequency of germination. We observed significant interaction among the light qualities and seed dormancy overcoming or not for the studied variables. There was no significant effect of light qualities, in the evaluated variables, when performing dormancy overcoming, presenting germination above 90% in all the light qualities. However, without dormancy overcoming, we observed greater GSI, germination at four and 14 DAS for the red light filter with 5, 4, 29 and 45%, respectively. When the seeds were submitted to the absence of light, and without dormancy overcoming, there was only 7% of germination at 14 DAS. The seeds of E. plantagineum presented greater germination under incidence of red light, without dormancy overcoming, being classified as preferably positively photoblastics, provided that the dormancy is not overcome.Instituto Internacional de Ecologia2021-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842021000300650Brazilian Journal of Biology v.81 n.3 2021reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/1519-6984.228777info:eu-repo/semantics/openAccessRoso,R.Nunes,U. R.Müller,C. A.Paranhos,J. T.Lopes,S. J.Dornelles,S. H. B.Bertagnolli,C. M.Huth,C.Forte,C. T.Menegaes,J. F.eng2021-03-29T00:00:00Zoai:scielo:S1519-69842021000300650Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2021-03-29T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
title Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
spellingShingle Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
Roso,R.
purple flower
photoblastism
phytochrome
cellophane paper
weed
title_short Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
title_full Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
title_fullStr Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
title_full_unstemmed Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
title_sort Light quality and dormancy overcoming in seed germination of Echium plantagineum L. (Boraginaceae)
author Roso,R.
author_facet Roso,R.
Nunes,U. R.
Müller,C. A.
Paranhos,J. T.
Lopes,S. J.
Dornelles,S. H. B.
Bertagnolli,C. M.
Huth,C.
Forte,C. T.
Menegaes,J. F.
author_role author
author2 Nunes,U. R.
Müller,C. A.
Paranhos,J. T.
Lopes,S. J.
Dornelles,S. H. B.
Bertagnolli,C. M.
Huth,C.
Forte,C. T.
Menegaes,J. F.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Roso,R.
Nunes,U. R.
Müller,C. A.
Paranhos,J. T.
Lopes,S. J.
Dornelles,S. H. B.
Bertagnolli,C. M.
Huth,C.
Forte,C. T.
Menegaes,J. F.
dc.subject.por.fl_str_mv purple flower
photoblastism
phytochrome
cellophane paper
weed
topic purple flower
photoblastism
phytochrome
cellophane paper
weed
description Abstract Light is considered a factor that influences the seed germination of many weed species, and it can signal whether the environmental conditions are favorable or are not favorable for germination. We aimed to study if there is an influence of light quality and dormancy overcoming in seed germination of Echium plantagineum L. We carried out a 2 x 6 factorial experiment, with and without dormancy overcoming with potassium nitrate followed by immersion in gibberellic acid; six light qualities, obtained through the light filters: blue, green, red, far-red, white light and absence of light. The evaluations performed were germination speed index (GSI), average germination time (AGT), germination at the four and 14 days after seeding (DAS), accumulated germination and relative frequency of germination. We observed significant interaction among the light qualities and seed dormancy overcoming or not for the studied variables. There was no significant effect of light qualities, in the evaluated variables, when performing dormancy overcoming, presenting germination above 90% in all the light qualities. However, without dormancy overcoming, we observed greater GSI, germination at four and 14 DAS for the red light filter with 5, 4, 29 and 45%, respectively. When the seeds were submitted to the absence of light, and without dormancy overcoming, there was only 7% of germination at 14 DAS. The seeds of E. plantagineum presented greater germination under incidence of red light, without dormancy overcoming, being classified as preferably positively photoblastics, provided that the dormancy is not overcome.
publishDate 2021
dc.date.none.fl_str_mv 2021-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842021000300650
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842021000300650
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1519-6984.228777
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Internacional de Ecologia
publisher.none.fl_str_mv Instituto Internacional de Ecologia
dc.source.none.fl_str_mv Brazilian Journal of Biology v.81 n.3 2021
reponame:Brazilian Journal of Biology
instname:Instituto Internacional de Ecologia (IIE)
instacron:IIE
instname_str Instituto Internacional de Ecologia (IIE)
instacron_str IIE
institution IIE
reponame_str Brazilian Journal of Biology
collection Brazilian Journal of Biology
repository.name.fl_str_mv Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)
repository.mail.fl_str_mv bjb@bjb.com.br||bjb@bjb.com.br
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