Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation

Detalhes bibliográficos
Autor(a) principal: Lamarca, Edmir Vicente
Data de Publicação: 2016
Outros Autores: Camargo, Marcelo Bento Paes de, Teixeira, Simone de Padua, Silva, Edvaldo Aparecido Amaral da, Faria, Jose Marcio Rocha, Barbedo, Claudio Jose
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/31639
Resumo: Eugenia pyriformis Cambess., known locally as uvaieira, a species of fruit-bearing tree with both pharmacological and gastronomic potential, has seeds which are sensitive to desiccation. The aim of this study was to analyse whether the degree of tolerance to desiccation of uvaieira seeds depends on the stage of maturation of the seeds at shedding. This, in turn, depends on the environmental conditions in which the seeds develop, including the accumulation of degree-days and rainfall in the period. Seeds were collected from the ripe fruit of parent plants located in the states of São Paulo and Minas Gerais, Brazil, submitted to drying and analysed for water content and germination. A completely randomised design was used in a 20 x 3 factorial scheme (source of material x level of drying). The degree of desiccation tolerance differs between region and period of collection, even for the same parent plant when the seeds are collected in different years. The water and thermal conditions of the environment during seed development modify the maturation cycle, the physiological quality and the acquisition of desiccation tolerance. In uvaieira seeds, desiccation tolerance depends on the physiological maturity of the seeds at the time of dispersal, which is associated with the environmental conditions.
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spelling Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturationVariações da tolerância à dessecação em sementes de Eugenia pyriformis: dispersão em diferentes estádios de maturaçãoUvaia - Dessecação em sementesTolerância à dessecaçãoUvaia - Seed desiccationDrying toleranceEugenia pyriformis Cambess., known locally as uvaieira, a species of fruit-bearing tree with both pharmacological and gastronomic potential, has seeds which are sensitive to desiccation. The aim of this study was to analyse whether the degree of tolerance to desiccation of uvaieira seeds depends on the stage of maturation of the seeds at shedding. This, in turn, depends on the environmental conditions in which the seeds develop, including the accumulation of degree-days and rainfall in the period. Seeds were collected from the ripe fruit of parent plants located in the states of São Paulo and Minas Gerais, Brazil, submitted to drying and analysed for water content and germination. A completely randomised design was used in a 20 x 3 factorial scheme (source of material x level of drying). The degree of desiccation tolerance differs between region and period of collection, even for the same parent plant when the seeds are collected in different years. The water and thermal conditions of the environment during seed development modify the maturation cycle, the physiological quality and the acquisition of desiccation tolerance. In uvaieira seeds, desiccation tolerance depends on the physiological maturity of the seeds at the time of dispersal, which is associated with the environmental conditions.A uvaieira (Eugenia pyriformis Cambess.), espécie arbórea e frutífera, com potencial farmacológico e gastronômico, apresenta sementes sensíveis à dessecação. O objetivo deste trabalho foi analisar se o grau de tolerância à dessecação de sementes de uvaieira depende do grau de maturidade das sementes no momento de sua dispersão. Este, por sua vez, depende das condições ambientais nas quais as sementes se desenvolvem, incluindo-se o acúmulo de graus-dia e a chuva acumulada no período. As sementes foram coletadas de frutos maduros de matrizes localizadas em São Paulo e Minas Gerais, submetidas à secagem e analisadas quanto ao teor de água e germinação. Utilizou-se o delineamento inteiramente casualizado, em esquema fatorial 20 x 3 (origem do material x níveis de secagem). O grau de tolerância à dessecação difere entre as regiões e épocas de coleta, inclusive dentro da mesma matriz, quando as sementes são coletadas em anos distintos. As condições hídricas e térmicas do ambiente, durante o desenvolvimento das sementes, condicionam o ciclo de maturação, a qualidade fisiológica e a aquisição da tolerância à dessecação. A tolerância à dessecação de sementes de uvaieira depende da maturidade fisiológica das sementes no momento de sua dispersão, a qual está associada às condições ambientais.Universidade Federal do Ceará2018-11-05T18:23:39Z2018-11-05T18:23:39Z2016-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfLAMARCA, E. V. et al. Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation. Revista Ciência Agronômica, Fortaleza, v. 47, n. 1, p. 118-126, jan./mar. 2016.http://repositorio.ufla.br/jspui/handle/1/31639Revista Ciência Agronômicareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessLamarca, Edmir VicenteCamargo, Marcelo Bento Paes deTeixeira, Simone de PaduaSilva, Edvaldo Aparecido Amaral daFaria, Jose Marcio RochaBarbedo, Claudio Joseeng2018-11-05T18:23:39Zoai:localhost:1/31639Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2018-11-05T18:23:39Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
Variações da tolerância à dessecação em sementes de Eugenia pyriformis: dispersão em diferentes estádios de maturação
title Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
spellingShingle Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
Lamarca, Edmir Vicente
Uvaia - Dessecação em sementes
Tolerância à dessecação
Uvaia - Seed desiccation
Drying tolerance
title_short Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
title_full Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
title_fullStr Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
title_full_unstemmed Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
title_sort Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
author Lamarca, Edmir Vicente
author_facet Lamarca, Edmir Vicente
Camargo, Marcelo Bento Paes de
Teixeira, Simone de Padua
Silva, Edvaldo Aparecido Amaral da
Faria, Jose Marcio Rocha
Barbedo, Claudio Jose
author_role author
author2 Camargo, Marcelo Bento Paes de
Teixeira, Simone de Padua
Silva, Edvaldo Aparecido Amaral da
Faria, Jose Marcio Rocha
Barbedo, Claudio Jose
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Lamarca, Edmir Vicente
Camargo, Marcelo Bento Paes de
Teixeira, Simone de Padua
Silva, Edvaldo Aparecido Amaral da
Faria, Jose Marcio Rocha
Barbedo, Claudio Jose
dc.subject.por.fl_str_mv Uvaia - Dessecação em sementes
Tolerância à dessecação
Uvaia - Seed desiccation
Drying tolerance
topic Uvaia - Dessecação em sementes
Tolerância à dessecação
Uvaia - Seed desiccation
Drying tolerance
description Eugenia pyriformis Cambess., known locally as uvaieira, a species of fruit-bearing tree with both pharmacological and gastronomic potential, has seeds which are sensitive to desiccation. The aim of this study was to analyse whether the degree of tolerance to desiccation of uvaieira seeds depends on the stage of maturation of the seeds at shedding. This, in turn, depends on the environmental conditions in which the seeds develop, including the accumulation of degree-days and rainfall in the period. Seeds were collected from the ripe fruit of parent plants located in the states of São Paulo and Minas Gerais, Brazil, submitted to drying and analysed for water content and germination. A completely randomised design was used in a 20 x 3 factorial scheme (source of material x level of drying). The degree of desiccation tolerance differs between region and period of collection, even for the same parent plant when the seeds are collected in different years. The water and thermal conditions of the environment during seed development modify the maturation cycle, the physiological quality and the acquisition of desiccation tolerance. In uvaieira seeds, desiccation tolerance depends on the physiological maturity of the seeds at the time of dispersal, which is associated with the environmental conditions.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
2018-11-05T18:23:39Z
2018-11-05T18:23:39Z
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 LAMARCA, E. V. et al. Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation. Revista Ciência Agronômica, Fortaleza, v. 47, n. 1, p. 118-126, jan./mar. 2016.
http://repositorio.ufla.br/jspui/handle/1/31639
identifier_str_mv LAMARCA, E. V. et al. Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation. Revista Ciência Agronômica, Fortaleza, v. 47, n. 1, p. 118-126, jan./mar. 2016.
url http://repositorio.ufla.br/jspui/handle/1/31639
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv 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 do Ceará
publisher.none.fl_str_mv Universidade Federal do Ceará
dc.source.none.fl_str_mv Revista Ciência Agronômica
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
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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)
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