Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Seed Science |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372013000100014 |
Resumo: | The aims of this study were to evaluate the influence of embryo adjacent tissues in water uptake and treatments to release dormancy in macaw palm seeds. To assess water absorption with or without the opercular tegument (OT), seeds were immersed in water for 0, 12, 24, 48, 72, 96, 120, 168, 240, 360, 480 and 720 hours and the water content of isolated embryos and seeds was determined. In seeds with or without OT, gibberellic acid (GA3) solutions at concentrations of 0, 50, 100, 500, 1000 and 2000 mg.L-1 were applied on the OT region using a culture medium. In another experiment, the OT was removed or left intact and the seeds immersed in hydrogen cyanamide solutions (0, 0.5, 1, 1.5, 2 and 2.5%). The percentage germination, germination speed index (GSI) and percentage dead seeds were determined. The OT does not prevent embryo water uptake but reduces water absorption speed. The use of GA3 in a culture medium applied to the OT region did not effectively release dormancy. The use of cyanamide at these concentrations increased seed mortality, resulting in a low germination. OT removal increased the GSI. |
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Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seedsimbibitionopercular tegumentGA3hydrogen cyanamideThe aims of this study were to evaluate the influence of embryo adjacent tissues in water uptake and treatments to release dormancy in macaw palm seeds. To assess water absorption with or without the opercular tegument (OT), seeds were immersed in water for 0, 12, 24, 48, 72, 96, 120, 168, 240, 360, 480 and 720 hours and the water content of isolated embryos and seeds was determined. In seeds with or without OT, gibberellic acid (GA3) solutions at concentrations of 0, 50, 100, 500, 1000 and 2000 mg.L-1 were applied on the OT region using a culture medium. In another experiment, the OT was removed or left intact and the seeds immersed in hydrogen cyanamide solutions (0, 0.5, 1, 1.5, 2 and 2.5%). The percentage germination, germination speed index (GSI) and percentage dead seeds were determined. The OT does not prevent embryo water uptake but reduces water absorption speed. The use of GA3 in a culture medium applied to the OT region did not effectively release dormancy. The use of cyanamide at these concentrations increased seed mortality, resulting in a low germination. OT removal increased the GSI.ABRATES - Associação Brasileira de Tecnologia de Sementes2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372013000100014Journal of Seed Science v.35 n.1 2013reponame:Journal of Seed Scienceinstname:Associação Brasileira de Tecnologia de Sementes (ABRATES)instacron:ABRATES10.1590/S2317-15372013000100014info:eu-repo/semantics/openAccessRodrigues Junior,Ailton GonçalvesOliveira,Túlio Gabriel SoaresSouza,Patrícia Pereira deRibeiro,Leonardo Monteiroeng2013-06-21T00:00:00Zoai:scielo:S2317-15372013000100014Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=2317-1537&lng=en&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||abrates@abrates.org.br2317-15452317-1537opendoar:2013-06-21T00:00Journal of Seed Science - Associação Brasileira de Tecnologia de Sementes (ABRATES)false |
dc.title.none.fl_str_mv |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
title |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
spellingShingle |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds Rodrigues Junior,Ailton Gonçalves imbibition opercular tegument GA3 hydrogen cyanamide |
title_short |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
title_full |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
title_fullStr |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
title_full_unstemmed |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
title_sort |
Water uptake and pre-germination treatments in macaw palm (Acrocomia aculeata - Arecaceae) seeds |
author |
Rodrigues Junior,Ailton Gonçalves |
author_facet |
Rodrigues Junior,Ailton Gonçalves Oliveira,Túlio Gabriel Soares Souza,Patrícia Pereira de Ribeiro,Leonardo Monteiro |
author_role |
author |
author2 |
Oliveira,Túlio Gabriel Soares Souza,Patrícia Pereira de Ribeiro,Leonardo Monteiro |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Rodrigues Junior,Ailton Gonçalves Oliveira,Túlio Gabriel Soares Souza,Patrícia Pereira de Ribeiro,Leonardo Monteiro |
dc.subject.por.fl_str_mv |
imbibition opercular tegument GA3 hydrogen cyanamide |
topic |
imbibition opercular tegument GA3 hydrogen cyanamide |
description |
The aims of this study were to evaluate the influence of embryo adjacent tissues in water uptake and treatments to release dormancy in macaw palm seeds. To assess water absorption with or without the opercular tegument (OT), seeds were immersed in water for 0, 12, 24, 48, 72, 96, 120, 168, 240, 360, 480 and 720 hours and the water content of isolated embryos and seeds was determined. In seeds with or without OT, gibberellic acid (GA3) solutions at concentrations of 0, 50, 100, 500, 1000 and 2000 mg.L-1 were applied on the OT region using a culture medium. In another experiment, the OT was removed or left intact and the seeds immersed in hydrogen cyanamide solutions (0, 0.5, 1, 1.5, 2 and 2.5%). The percentage germination, germination speed index (GSI) and percentage dead seeds were determined. The OT does not prevent embryo water uptake but reduces water absorption speed. The use of GA3 in a culture medium applied to the OT region did not effectively release dormancy. The use of cyanamide at these concentrations increased seed mortality, resulting in a low germination. OT removal increased the GSI. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 |
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=S2317-15372013000100014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372013000100014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S2317-15372013000100014 |
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 |
ABRATES - Associação Brasileira de Tecnologia de Sementes |
publisher.none.fl_str_mv |
ABRATES - Associação Brasileira de Tecnologia de Sementes |
dc.source.none.fl_str_mv |
Journal of Seed Science v.35 n.1 2013 reponame:Journal of Seed Science instname:Associação Brasileira de Tecnologia de Sementes (ABRATES) instacron:ABRATES |
instname_str |
Associação Brasileira de Tecnologia de Sementes (ABRATES) |
instacron_str |
ABRATES |
institution |
ABRATES |
reponame_str |
Journal of Seed Science |
collection |
Journal of Seed Science |
repository.name.fl_str_mv |
Journal of Seed Science - Associação Brasileira de Tecnologia de Sementes (ABRATES) |
repository.mail.fl_str_mv |
||abrates@abrates.org.br |
_version_ |
1754212981594390528 |