Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/14898 |
Resumo: | Qualea grandiflora Mart. (Vochysiaceae), commonly known as “pau-terra”, is an arborous species native to the Brazilian savannah which possess commercial interests, as it can be used either as an ornamental or as a medicinal plant. “Pau-terra” can also be used in the heterogeneous reforestation of areas which are destined for restoration of permanent preservation degraded areas. Propagation studies with this species are scarce, being necessary then further clarification regarding the factors that influences the germination process. In this context, the objective of this work was to evaluate the influence of different temperatures, substrates and light conditions on seed germination. We selected light brown seeds which were subjected to different interactions between temperatures (15-25, 20-30, 25 and 30°C), substrate (paper, sand and vermiculite) and light (light and dark). All seeds were later dryincubated at 32°C for 3, 6 and 12 hours. After treatments, seeds were kept in BOD at 58% RH and the following parameters were calculated: germination (%G) and germination speed index (GSI); the formation of normal and abnormal seedlings and the number dead seeds. Interaction was observed for all variables. In the optimum temperature range, the seeds behaved as photoblastic neutral or indifferent. Under alternating temperatures, darkness enhanced the germination, especially when combined with the lower temperatures. We noted that the sowing in sand, at 25°C, allowed the maintenance of suitable combinations of germination and seedling development. With respect to desiccation tolerance, “pau-terra” seeds presented an orthodox behavior, with a linear increase of the vigor as function of drying. |
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Technology of Qualea grandiflora Mart. (Vochysiaceae) seedsTecnologia de sementes de Qualea grandiflora Mart. (Vochysiaceae)LightTemperatureSubstrateDryingOrthodox seedLuzTemperaturaSubstratoSecagemSemente ortodoxaQualea grandiflora Mart. (Vochysiaceae), commonly known as “pau-terra”, is an arborous species native to the Brazilian savannah which possess commercial interests, as it can be used either as an ornamental or as a medicinal plant. “Pau-terra” can also be used in the heterogeneous reforestation of areas which are destined for restoration of permanent preservation degraded areas. Propagation studies with this species are scarce, being necessary then further clarification regarding the factors that influences the germination process. In this context, the objective of this work was to evaluate the influence of different temperatures, substrates and light conditions on seed germination. We selected light brown seeds which were subjected to different interactions between temperatures (15-25, 20-30, 25 and 30°C), substrate (paper, sand and vermiculite) and light (light and dark). All seeds were later dryincubated at 32°C for 3, 6 and 12 hours. After treatments, seeds were kept in BOD at 58% RH and the following parameters were calculated: germination (%G) and germination speed index (GSI); the formation of normal and abnormal seedlings and the number dead seeds. Interaction was observed for all variables. In the optimum temperature range, the seeds behaved as photoblastic neutral or indifferent. Under alternating temperatures, darkness enhanced the germination, especially when combined with the lower temperatures. We noted that the sowing in sand, at 25°C, allowed the maintenance of suitable combinations of germination and seedling development. With respect to desiccation tolerance, “pau-terra” seeds presented an orthodox behavior, with a linear increase of the vigor as function of drying.Qualea grandiflora Mart.(Vochysiaceae), conhecida como pau-terra, é uma espécie arbórea nativa do cerrado brasileiro que apresenta interesse comercial, como ornamental e medicinal, podendo ainda ser empregada em reflorestamentos heterogêneos, destinados á recomposição de áreas degradadas de preservação permanente. Estudos de propagação com essa espécie são escassos, sendo necessários maiores esclarecimentos quanto aos fatores que influenciam no processo germinativo. Nesse contexto, objetivou-se avaliar a influência de diferentes temperaturas, substratos e condições de luminosidade na germinação de sementes de pau-terra.Foram selecionadas sementes de coloração marrom clara e submetidas a interação entre temperaturas (15-25, 20-30, 25 e 30°C),substratos (sobre papel, entre areia e entre vermiculita) e luz (claro e escuro), e a secagem em estufa a 32 °C, por 3, 6 e 12 horas. Após o tratamento, as sementes foram mantidas em BOD com 58% UR e calculados os parâmetros germinabilidade (%G) e índice de velocidade de germinação (IVG), formação da plântula normal e anormais e de sementes mortas. Foi observada interação paratodas as variáveis analisadas. Na faixa de temperatura ótima, as sementes apresentaram comportamento fotoblástico neutro ou indiferente. Sob temperaturas alternadas, o escuro favoreceu a germinação, principalmente quando em combinação com a temperatura mais baixa. A semeadura entre areia a 25 °C permite a manutenção de combinações adequadas para a germinação e desenvolvimento da plântula. Com relação à tolerância a dessecação, as sementes de pau terra apresentam comportamento ortodoxo, havendo um incremento linear do vigor em função da secagem.Universidade Federal de Lavras (UFLA)2016-04-052017-08-01T20:19:31Z2017-08-01T20:19:31Z2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfDOUSSEAU, S. et al. Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds. CERNE, Lavras, v. 19, n. 1, p. 93-101, jan./mar. 2013.http://repositorio.ufla.br/jspui/handle/1/148982317-63420104-7760reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAengCopyright (c) 2016 CERNEAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessDousseau, SaraAlvarenga, Amauri Alves deArantes, Lúcio de OliveiraChaves, Izabel de SouzaAvelino, Eduardo Valente2021-01-27T00:45:40Zoai:localhost:1/14898Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-01-27T00:45:40Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds Tecnologia de sementes de Qualea grandiflora Mart. (Vochysiaceae) |
title |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds |
spellingShingle |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds Dousseau, Sara Light Temperature Substrate Drying Orthodox seed Luz Temperatura Substrato Secagem Semente ortodoxa |
title_short |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds |
title_full |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds |
title_fullStr |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds |
title_full_unstemmed |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds |
title_sort |
Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds |
author |
Dousseau, Sara |
author_facet |
Dousseau, Sara Alvarenga, Amauri Alves de Arantes, Lúcio de Oliveira Chaves, Izabel de Souza Avelino, Eduardo Valente |
author_role |
author |
author2 |
Alvarenga, Amauri Alves de Arantes, Lúcio de Oliveira Chaves, Izabel de Souza Avelino, Eduardo Valente |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Dousseau, Sara Alvarenga, Amauri Alves de Arantes, Lúcio de Oliveira Chaves, Izabel de Souza Avelino, Eduardo Valente |
dc.subject.por.fl_str_mv |
Light Temperature Substrate Drying Orthodox seed Luz Temperatura Substrato Secagem Semente ortodoxa |
topic |
Light Temperature Substrate Drying Orthodox seed Luz Temperatura Substrato Secagem Semente ortodoxa |
description |
Qualea grandiflora Mart. (Vochysiaceae), commonly known as “pau-terra”, is an arborous species native to the Brazilian savannah which possess commercial interests, as it can be used either as an ornamental or as a medicinal plant. “Pau-terra” can also be used in the heterogeneous reforestation of areas which are destined for restoration of permanent preservation degraded areas. Propagation studies with this species are scarce, being necessary then further clarification regarding the factors that influences the germination process. In this context, the objective of this work was to evaluate the influence of different temperatures, substrates and light conditions on seed germination. We selected light brown seeds which were subjected to different interactions between temperatures (15-25, 20-30, 25 and 30°C), substrate (paper, sand and vermiculite) and light (light and dark). All seeds were later dryincubated at 32°C for 3, 6 and 12 hours. After treatments, seeds were kept in BOD at 58% RH and the following parameters were calculated: germination (%G) and germination speed index (GSI); the formation of normal and abnormal seedlings and the number dead seeds. Interaction was observed for all variables. In the optimum temperature range, the seeds behaved as photoblastic neutral or indifferent. Under alternating temperatures, darkness enhanced the germination, especially when combined with the lower temperatures. We noted that the sowing in sand, at 25°C, allowed the maintenance of suitable combinations of germination and seedling development. With respect to desiccation tolerance, “pau-terra” seeds presented an orthodox behavior, with a linear increase of the vigor as function of drying. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-05 2017-08-01T20:19:31Z 2017-08-01T20:19:31Z 2017-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
DOUSSEAU, S. et al. Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds. CERNE, Lavras, v. 19, n. 1, p. 93-101, jan./mar. 2013. http://repositorio.ufla.br/jspui/handle/1/14898 |
identifier_str_mv |
DOUSSEAU, S. et al. Technology of Qualea grandiflora Mart. (Vochysiaceae) seeds. CERNE, Lavras, v. 19, n. 1, p. 93-101, jan./mar. 2013. |
url |
http://repositorio.ufla.br/jspui/handle/1/14898 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 CERNE Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 CERNE Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras (UFLA) |
publisher.none.fl_str_mv |
Universidade Federal de Lavras (UFLA) |
dc.source.none.fl_str_mv |
2317-6342 0104-7760 reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1784550183774715904 |