Desiccation tolerance of Tapirira obtusa seeds collected from different environments
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Sementes (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300005 |
Resumo: | This study was aimed at evaluating the desiccation sensitivity in seeds of the tree Tapirira obtusa (Benth.) J. D. Mitchell collected from three different environments and subjected to two distinct drying speeds. Seeds were collected from a rocky area, in the "Cerrado", and in a riparian forest area, in the region of municipality of Lavras, State of Minas Gerais. The seeds were subjected to drying with magnesium chloride (slow drying) or silica gel (fast drying), into closed environment, until moisture contents of 40%, 30%, 20% and 10%, considering as control, the percentage of germination at the initial moisture content in each environment, which varied from 47% to 50%. Percentages of germination and normal seedlings as well as germination speed index were assessed. For the three environments studied, there was no effect of slow drying on seed germination. Seeds from area of Cerrado, however, have shown a slight reduction on germination when subjected to fast drying. Oppositely, seeds from rocky area had germination increased when subjected to fast drying. Seeds from riparian forest area had no reduction on germination percentage, independent of drying speed. Results suggest that seeds of T. obtusa are not sensitive to desiccation. |
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Desiccation tolerance of Tapirira obtusa seeds collected from different environmentsdryinggerminationsensitivitydehydrationThis study was aimed at evaluating the desiccation sensitivity in seeds of the tree Tapirira obtusa (Benth.) J. D. Mitchell collected from three different environments and subjected to two distinct drying speeds. Seeds were collected from a rocky area, in the "Cerrado", and in a riparian forest area, in the region of municipality of Lavras, State of Minas Gerais. The seeds were subjected to drying with magnesium chloride (slow drying) or silica gel (fast drying), into closed environment, until moisture contents of 40%, 30%, 20% and 10%, considering as control, the percentage of germination at the initial moisture content in each environment, which varied from 47% to 50%. Percentages of germination and normal seedlings as well as germination speed index were assessed. For the three environments studied, there was no effect of slow drying on seed germination. Seeds from area of Cerrado, however, have shown a slight reduction on germination when subjected to fast drying. Oppositely, seeds from rocky area had germination increased when subjected to fast drying. Seeds from riparian forest area had no reduction on germination percentage, independent of drying speed. Results suggest that seeds of T. obtusa are not sensitive to desiccation.Associação Brasileira de Tecnologia de Sementes2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300005Revista Brasileira de Sementes v.34 n.3 2012reponame:Revista Brasileira de Sementes (Online)instname:Associação Brasileira de Tecnologia de Sementes (ABRATES)instacron:ABTS10.1590/S0101-31222012000300005info:eu-repo/semantics/openAccessPereira,Wilson Vicente SouzaFaria,José Márcio RochaTonetti,Olivia Alvina OliveiraSilva,Edvaldo Aparecido Amaral daeng2012-10-01T00:00:00Zoai:scielo:S0101-31222012000300005Revistahttp://www.abrates.org.br/portal/revista/ONGhttps://old.scielo.br/oai/scielo-oai.php||abrates@abrates.org.br1806-99750101-3122opendoar:2012-10-01T00:00Revista Brasileira de Sementes (Online) - Associação Brasileira de Tecnologia de Sementes (ABRATES)false |
dc.title.none.fl_str_mv |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
title |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
spellingShingle |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments Pereira,Wilson Vicente Souza drying germination sensitivity dehydration |
title_short |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
title_full |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
title_fullStr |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
title_full_unstemmed |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
title_sort |
Desiccation tolerance of Tapirira obtusa seeds collected from different environments |
author |
Pereira,Wilson Vicente Souza |
author_facet |
Pereira,Wilson Vicente Souza Faria,José Márcio Rocha Tonetti,Olivia Alvina Oliveira Silva,Edvaldo Aparecido Amaral da |
author_role |
author |
author2 |
Faria,José Márcio Rocha Tonetti,Olivia Alvina Oliveira Silva,Edvaldo Aparecido Amaral da |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pereira,Wilson Vicente Souza Faria,José Márcio Rocha Tonetti,Olivia Alvina Oliveira Silva,Edvaldo Aparecido Amaral da |
dc.subject.por.fl_str_mv |
drying germination sensitivity dehydration |
topic |
drying germination sensitivity dehydration |
description |
This study was aimed at evaluating the desiccation sensitivity in seeds of the tree Tapirira obtusa (Benth.) J. D. Mitchell collected from three different environments and subjected to two distinct drying speeds. Seeds were collected from a rocky area, in the "Cerrado", and in a riparian forest area, in the region of municipality of Lavras, State of Minas Gerais. The seeds were subjected to drying with magnesium chloride (slow drying) or silica gel (fast drying), into closed environment, until moisture contents of 40%, 30%, 20% and 10%, considering as control, the percentage of germination at the initial moisture content in each environment, which varied from 47% to 50%. Percentages of germination and normal seedlings as well as germination speed index were assessed. For the three environments studied, there was no effect of slow drying on seed germination. Seeds from area of Cerrado, however, have shown a slight reduction on germination when subjected to fast drying. Oppositely, seeds from rocky area had germination increased when subjected to fast drying. Seeds from riparian forest area had no reduction on germination percentage, independent of drying speed. Results suggest that seeds of T. obtusa are not sensitive to desiccation. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 |
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=S0101-31222012000300005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0101-31222012000300005 |
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 |
Associação Brasileira de Tecnologia de Sementes |
publisher.none.fl_str_mv |
Associação Brasileira de Tecnologia de Sementes |
dc.source.none.fl_str_mv |
Revista Brasileira de Sementes v.34 n.3 2012 reponame:Revista Brasileira de Sementes (Online) instname:Associação Brasileira de Tecnologia de Sementes (ABRATES) instacron:ABTS |
instname_str |
Associação Brasileira de Tecnologia de Sementes (ABRATES) |
instacron_str |
ABTS |
institution |
ABTS |
reponame_str |
Revista Brasileira de Sementes (Online) |
collection |
Revista Brasileira de Sementes (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Sementes (Online) - Associação Brasileira de Tecnologia de Sementes (ABRATES) |
repository.mail.fl_str_mv |
||abrates@abrates.org.br |
_version_ |
1754820949902884864 |