Variations in desiccation tolerance in seeds of Eugenia pyriformis: dispersal at different stages of maturation
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/1/31639 |
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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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) |
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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1815439019422515200 |