Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
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=S2317-15372017000200114 |
Resumo: | Abstract: Seed of Townsville stylo (Stylosanthes humilis H.B.K.) is known to exhibit a hard seed coat and when freshly harvested also show a physiological dormancy, however, the nature of the co-actions between seed coat and embryo growth that determine dormancy is poorly understood. In this study, physical dormancy of Townsville stylo seeds was not reduced during natural ageing at room temperature, in contrast to the physiological dormancy, which is gradually overcome during after-ripening. Furthermore, the permeability of seed coat was affected by scarification treatments as well as by low-pH solutions. Together, these data indicate that physical dormancy overcome of seed is prerequisite for radicle protrusion and physiological dormancy of Townsville stylo seeds contribute to its timing. |
id |
ABRATES-1_a6dbca190408e4d0665f91b2543d8357 |
---|---|
oai_identifier_str |
oai:scielo:S2317-15372017000200114 |
network_acronym_str |
ABRATES-1 |
network_name_str |
Journal of Seed Science |
repository_id_str |
|
spelling |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seedsphysical dormancyphysiological dormancyTownsville styloAbstract: Seed of Townsville stylo (Stylosanthes humilis H.B.K.) is known to exhibit a hard seed coat and when freshly harvested also show a physiological dormancy, however, the nature of the co-actions between seed coat and embryo growth that determine dormancy is poorly understood. In this study, physical dormancy of Townsville stylo seeds was not reduced during natural ageing at room temperature, in contrast to the physiological dormancy, which is gradually overcome during after-ripening. Furthermore, the permeability of seed coat was affected by scarification treatments as well as by low-pH solutions. Together, these data indicate that physical dormancy overcome of seed is prerequisite for radicle protrusion and physiological dormancy of Townsville stylo seeds contribute to its timing.ABRATES - Associação Brasileira de Tecnologia de Sementes2017-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372017000200114Journal of Seed Science v.39 n.2 2017reponame:Journal of Seed Scienceinstname:Associação Brasileira de Tecnologia de Sementes (ABRATES)instacron:ABRATES10.1590/2317-1545v39n2167773info:eu-repo/semantics/openAccessChaves,Izabel de SouzaSilva,Nilo Cesar QueirogaRibeiro,Dimas Mendeseng2017-08-17T00:00:00Zoai:scielo:S2317-15372017000200114Revistahttp://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:2017-08-17T00:00Journal of Seed Science - Associação Brasileira de Tecnologia de Sementes (ABRATES)false |
dc.title.none.fl_str_mv |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
title |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
spellingShingle |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds Chaves,Izabel de Souza physical dormancy physiological dormancy Townsville stylo |
title_short |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
title_full |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
title_fullStr |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
title_full_unstemmed |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
title_sort |
Effect of the seed coat on dormancy and germination in Stylosanthes humilis H. B. K. Seeds |
author |
Chaves,Izabel de Souza |
author_facet |
Chaves,Izabel de Souza Silva,Nilo Cesar Queiroga Ribeiro,Dimas Mendes |
author_role |
author |
author2 |
Silva,Nilo Cesar Queiroga Ribeiro,Dimas Mendes |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Chaves,Izabel de Souza Silva,Nilo Cesar Queiroga Ribeiro,Dimas Mendes |
dc.subject.por.fl_str_mv |
physical dormancy physiological dormancy Townsville stylo |
topic |
physical dormancy physiological dormancy Townsville stylo |
description |
Abstract: Seed of Townsville stylo (Stylosanthes humilis H.B.K.) is known to exhibit a hard seed coat and when freshly harvested also show a physiological dormancy, however, the nature of the co-actions between seed coat and embryo growth that determine dormancy is poorly understood. In this study, physical dormancy of Townsville stylo seeds was not reduced during natural ageing at room temperature, in contrast to the physiological dormancy, which is gradually overcome during after-ripening. Furthermore, the permeability of seed coat was affected by scarification treatments as well as by low-pH solutions. Together, these data indicate that physical dormancy overcome of seed is prerequisite for radicle protrusion and physiological dormancy of Townsville stylo seeds contribute to its timing. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-06-01 |
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=S2317-15372017000200114 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372017000200114 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2317-1545v39n2167773 |
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.39 n.2 2017 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_ |
1754212982456320000 |