Temperature and light requirements for germination of species of Velloziaceae from different Brazilian rocky outcrops

Detalhes bibliográficos
Autor(a) principal: Bicalho, Elisa Monteze
Data de Publicação: 2018
Outros Autores: Soares-da-Mota, Letícia A., Garcia, Queila Souza
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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spelling 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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