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Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities

dc.creatorPedroso de Moraes, Cristiano
dc.creatorde Souza Leal, Thiago
dc.creatorSaoncella, Alinne L.
dc.creatorde Almeida, Marcílio
dc.date2016-04-13
dc.date.accessioned2016-05-02T22:15:52Z
dc.date.available2016-05-02T22:15:52Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/23746
dc.identifier10.15517/lank.v16i1.23746
dc.identifier.urihttp://hdl.handle.net/10669/21262
dc.descriptionTo elucidate the factors which control the flower phenotypic plasticity of Catasetum fimbriatum, studies focusing the floral development of the species were performed. The treatments were: high light intensity (1613 μmol.m-2.s-1); low light intensity (454 μmol.m-2.s-1) and mean light intensity (827 μmol.m-2.s-1). The floral morphology and anatomy were analyzed to evaluate of the sequence of tissue development involved in the sexual differentiation. We found the presence of cell cluster with meristematic features in the ovaries and gynostemium of the male and female diclinous flowers. These are responsible for the definition of the sexual expression of the species, in the dependence of the environmental stimulus, related to the endogenous concentration of ethylene, allowing, consequently, the dedifferentiation and re-differentiation of those clusters in the sexual determination of the flowers. There were no anatomical differences in floral tissues in different treatments. es-ES
dc.descriptionTo elucidate the factors which control the flower phenotypic plasticity of Catasetum fimbriatum, studies focusing the floral development of the species were performed. The treatments were: high light intensity (1613 μmol.m-2.s-1); low light intensity (454 μmol.m-2.s-1) and mean light intensity (827 μmol.m-2.s-1). The floral morphology and anatomy were analyzed to evaluate of the sequence of tissue development involved in the sexual differentiation. We found the presence of cell cluster with meristematic features in the ovaries and gynostemium of the male and female diclinous flowers. These are responsible for the definition of the sexual expression of the species, in the dependence of the environmental stimulus, related to the endogenous concentration of ethylene, allowing, consequently, the dedifferentiation and re-differentiation of those clusters in the sexual determination of the flowers. There were no anatomical differences in floral tissues in different treatments. en-US
dc.formatapplication/pdf
dc.languagespa
dc.publisherUniversidad de Costa Ricaes-ES
dc.relationLankesteriana;
dc.rightsCopyright (c) 2016 Lankesterianaes-ES
dc.sourceLankesteriana; Early View. Lankesteriana: Volumen 16, Número 1es-ES
dc.source2215-2067
dc.source1409-3871
dc.subjectOrchides-ES
dc.subjectsexual expressiones-ES
dc.subjectanatomyes-ES
dc.subjectOrchiden-US
dc.subjectsexual expressionen-US
dc.subjectanatomyen-US
dc.titleFloral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensitieses-ES
dc.titleFloral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensitiesen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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