Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/33158 |
Resumo: | Germination is the first step to successful plant establishment. The range of factors that promote germination varies among species. Light and temperature requirements for the germination of species of Velloziaceae were investigated. Seeds of Barbacenia flava, B. markgrafii, B. purpurea, B. williamsi, Vellozia alata, V. compacta, V. glochidea and V. plicata were collected from rocky outcrops located in different Brazilian states and were incubated for germination at 10 to 40 °C in light or dark conditions. Seed mass and length were measured for each species. In general, all species exhibited a high germination percentage at temperatures of 15-40 °C in the light, with the optimal temperature being 25-30 °C for species of Barbacenia and 30 °C for species of Vellozia. Barbacenia flava, V. compacta and, particularly, B. markgrafii, germinated in the dark. In contrast, B. purpurea exhibited an absolute requirement for light and the most restricted range of temperature to germinate. Germination responses and seed traits were related to the microclimate where the species were collected, and germinability in darkness is likely a common trait for species of Velloziaceae from the Espinhaço Range. |
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Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcropsBarbaceniaDarknessGranitic outcropsInselbergsIronstone outcropsOptimal temperatureQuarzitic outcropsVelloziaGermination is the first step to successful plant establishment. The range of factors that promote germination varies among species. Light and temperature requirements for the germination of species of Velloziaceae were investigated. Seeds of Barbacenia flava, B. markgrafii, B. purpurea, B. williamsi, Vellozia alata, V. compacta, V. glochidea and V. plicata were collected from rocky outcrops located in different Brazilian states and were incubated for germination at 10 to 40 °C in light or dark conditions. Seed mass and length were measured for each species. In general, all species exhibited a high germination percentage at temperatures of 15-40 °C in the light, with the optimal temperature being 25-30 °C for species of Barbacenia and 30 °C for species of Vellozia. Barbacenia flava, V. compacta and, particularly, B. markgrafii, germinated in the dark. In contrast, B. purpurea exhibited an absolute requirement for light and the most restricted range of temperature to germinate. Germination responses and seed traits were related to the microclimate where the species were collected, and germinability in darkness is likely a common trait for species of Velloziaceae from the Espinhaço Range.Sociedade Botânica do Brasil (SBB)2019-03-08T20:21:03Z2019-03-08T20:21:03Z2018-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfBICALHO, E. M.; SOARES-DA-MOTA, L. A.; GARCIA, Q. S. Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops. Acta Botanica Brasilica, Belo Horizonte, v. 32, n. 2, p. 240-246, Apr./June 2018. DOI: http://dx.doi.org/10.1590/0102-33062017abb0310.http://repositorio.ufla.br/jspui/handle/1/33158Acta Botanica Brasilicareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessBicalho, Elisa MontezeSoares-da-Mota, Letícia A.Garcia, Queila Souzaeng2019-03-08T20:21:03Zoai:localhost:1/33158Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-03-08T20:21:03Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
title |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
spellingShingle |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops Bicalho, Elisa Monteze Barbacenia Darkness Granitic outcrops Inselbergs Ironstone outcrops Optimal temperature Quarzitic outcrops Vellozia |
title_short |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
title_full |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
title_fullStr |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
title_full_unstemmed |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
title_sort |
Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops |
author |
Bicalho, Elisa Monteze |
author_facet |
Bicalho, Elisa Monteze Soares-da-Mota, Letícia A. Garcia, Queila Souza |
author_role |
author |
author2 |
Soares-da-Mota, Letícia A. Garcia, Queila Souza |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Bicalho, Elisa Monteze Soares-da-Mota, Letícia A. Garcia, Queila Souza |
dc.subject.por.fl_str_mv |
Barbacenia Darkness Granitic outcrops Inselbergs Ironstone outcrops Optimal temperature Quarzitic outcrops Vellozia |
topic |
Barbacenia Darkness Granitic outcrops Inselbergs Ironstone outcrops Optimal temperature Quarzitic outcrops Vellozia |
description |
Germination is the first step to successful plant establishment. The range of factors that promote germination varies among species. Light and temperature requirements for the germination of species of Velloziaceae were investigated. Seeds of Barbacenia flava, B. markgrafii, B. purpurea, B. williamsi, Vellozia alata, V. compacta, V. glochidea and V. plicata were collected from rocky outcrops located in different Brazilian states and were incubated for germination at 10 to 40 °C in light or dark conditions. Seed mass and length were measured for each species. In general, all species exhibited a high germination percentage at temperatures of 15-40 °C in the light, with the optimal temperature being 25-30 °C for species of Barbacenia and 30 °C for species of Vellozia. Barbacenia flava, V. compacta and, particularly, B. markgrafii, germinated in the dark. In contrast, B. purpurea exhibited an absolute requirement for light and the most restricted range of temperature to germinate. Germination responses and seed traits were related to the microclimate where the species were collected, and germinability in darkness is likely a common trait for species of Velloziaceae from the Espinhaço Range. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-06 2019-03-08T20:21:03Z 2019-03-08T20:21:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
BICALHO, E. M.; SOARES-DA-MOTA, L. A.; GARCIA, Q. S. Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops. Acta Botanica Brasilica, Belo Horizonte, v. 32, n. 2, p. 240-246, Apr./June 2018. DOI: http://dx.doi.org/10.1590/0102-33062017abb0310. http://repositorio.ufla.br/jspui/handle/1/33158 |
identifier_str_mv |
BICALHO, E. M.; SOARES-DA-MOTA, L. A.; GARCIA, Q. S. Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops. Acta Botanica Brasilica, Belo Horizonte, v. 32, n. 2, p. 240-246, Apr./June 2018. DOI: http://dx.doi.org/10.1590/0102-33062017abb0310. |
url |
http://repositorio.ufla.br/jspui/handle/1/33158 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
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 |
Sociedade Botânica do Brasil (SBB) |
publisher.none.fl_str_mv |
Sociedade Botânica do Brasil (SBB) |
dc.source.none.fl_str_mv |
Acta Botanica Brasilica 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 |
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1807835093961539584 |