Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds
Autor(a) principal: | |
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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=S2317-15372017000200123 |
Resumo: | Abstract: Seed storage is an important tool for ex situ conservation. Orthodox seeds can be stored for long periods, but recalcitrant seeds generally only for short periods. There is wide variation in the degree of desiccation tolerance between orthodox and recalcitrant seeds, leading authors to suggest levels of recalcitrance and, more recently, that there are variations in the stage of maturity at seed dispersal. Thus, recalcitrant behavior would be a result of premature dispersal from the mother plant. In this study, we sought to establish physiological relationships between different stages of development of immature orthodox Caesalpinia echinata seeds and the stages described for recalcitrant seeds to verify similarity of behavior. Therefore, we analyzed the desiccation tolerance of seeds collected at different ages, with and without PEG treatment, at different levels of drying (40%, 30%, 20% and 10% water content, wet basis). Changes in water potential, germination, vigor, and respiratory rates of the seeds were analyzed, and the results showed that: 1) desiccation tolerance increased as maturation proceeded; 2) PEG treatment did not induce desiccation tolerance; and 3) PEG treatment decreased the seed oxidation rate, which is the main factor in rapid seed deterioration of C. echinata in storage. |
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Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seedsdesiccation toleranceosmoprimingmaturationoxidative processAbstract: Seed storage is an important tool for ex situ conservation. Orthodox seeds can be stored for long periods, but recalcitrant seeds generally only for short periods. There is wide variation in the degree of desiccation tolerance between orthodox and recalcitrant seeds, leading authors to suggest levels of recalcitrance and, more recently, that there are variations in the stage of maturity at seed dispersal. Thus, recalcitrant behavior would be a result of premature dispersal from the mother plant. In this study, we sought to establish physiological relationships between different stages of development of immature orthodox Caesalpinia echinata seeds and the stages described for recalcitrant seeds to verify similarity of behavior. Therefore, we analyzed the desiccation tolerance of seeds collected at different ages, with and without PEG treatment, at different levels of drying (40%, 30%, 20% and 10% water content, wet basis). Changes in water potential, germination, vigor, and respiratory rates of the seeds were analyzed, and the results showed that: 1) desiccation tolerance increased as maturation proceeded; 2) PEG treatment did not induce desiccation tolerance; and 3) PEG treatment decreased the seed oxidation rate, which is the main factor in rapid seed deterioration of C. echinata in storage.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=S2317-15372017000200123Journal of Seed Science v.39 n.2 2017reponame:Journal of Seed Scienceinstname:Associação Brasileira de Tecnologia de Sementes (ABRATES)instacron:ABRATES10.1590/2317-1545v39n2167788info:eu-repo/semantics/openAccessAraujo,Ana Clara Ferreira BaptistaBarbedo,Claudio Joséeng2017-08-17T00:00:00Zoai:scielo:S2317-15372017000200123Revistahttp://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 |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
title |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
spellingShingle |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds Araujo,Ana Clara Ferreira Baptista desiccation tolerance osmopriming maturation oxidative process |
title_short |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
title_full |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
title_fullStr |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
title_full_unstemmed |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
title_sort |
Changes in desiccation tolerance and respiratory rates of immature Caesalpinia echinata Lam. Seeds |
author |
Araujo,Ana Clara Ferreira Baptista |
author_facet |
Araujo,Ana Clara Ferreira Baptista Barbedo,Claudio José |
author_role |
author |
author2 |
Barbedo,Claudio José |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Araujo,Ana Clara Ferreira Baptista Barbedo,Claudio José |
dc.subject.por.fl_str_mv |
desiccation tolerance osmopriming maturation oxidative process |
topic |
desiccation tolerance osmopriming maturation oxidative process |
description |
Abstract: Seed storage is an important tool for ex situ conservation. Orthodox seeds can be stored for long periods, but recalcitrant seeds generally only for short periods. There is wide variation in the degree of desiccation tolerance between orthodox and recalcitrant seeds, leading authors to suggest levels of recalcitrance and, more recently, that there are variations in the stage of maturity at seed dispersal. Thus, recalcitrant behavior would be a result of premature dispersal from the mother plant. In this study, we sought to establish physiological relationships between different stages of development of immature orthodox Caesalpinia echinata seeds and the stages described for recalcitrant seeds to verify similarity of behavior. Therefore, we analyzed the desiccation tolerance of seeds collected at different ages, with and without PEG treatment, at different levels of drying (40%, 30%, 20% and 10% water content, wet basis). Changes in water potential, germination, vigor, and respiratory rates of the seeds were analyzed, and the results showed that: 1) desiccation tolerance increased as maturation proceeded; 2) PEG treatment did not induce desiccation tolerance; and 3) PEG treatment decreased the seed oxidation rate, which is the main factor in rapid seed deterioration of C. echinata in storage. |
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=S2317-15372017000200123 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372017000200123 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2317-1545v39n2167788 |
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 |
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1754212982457368576 |