FLORAL SEXUAL DIFFERENTIATION IN CATASETUM FIMBRIATUM (CATASETINAE, ORCHIDACEAE) EXPOSED TO DIFFERENT LIGHT INTENSITIES
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2016
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| _version_ | 1876440839032406016 |
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| author | Cristiano Pedroso-de-Moraes |
| author_facet | Cristiano Pedroso-de-Moraes |
| contents | FLORAL SEXUAL DIFFERENTIATION IN CATASETUM FIMBRIATUM (CATASETINAE, ORCHIDACEAE) EXPOSED TO DIFFERENT LIGHT INTENSITIES Cristiano Pedroso-de-Moraes Thiago de Souza-Leal Alinne L. Saoncella Marcílio de Almeida Biología Orchid anatomy sexual expression To 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. 2016 artículo científico 1409-3871 https://www.redalyc.org/articulo.oa?id=44345617007 en http://www.redalyc.org/revista.oa?id=443 Lankesteriana International Journal on Orchidology application/pdf Universidad de Costa Rica Lankesteriana International Journal on Orchidology (Costa Rica) Num.1 Vol.16 |
| format | Artículo científico |
| id | redalyc_44345617007 |
| institution | Redalyc |
| language | en |
| publishDate | 2016 |
| publisher | Universidad de Costa Rica |
| spellingShingle | FLORAL SEXUAL DIFFERENTIATION IN CATASETUM FIMBRIATUM (CATASETINAE, ORCHIDACEAE) EXPOSED TO DIFFERENT LIGHT INTENSITIES Cristiano Pedroso-de-Moraes Biología Orchid anatomy sexual expression FLORAL SEXUAL DIFFERENTIATION IN CATASETUM FIMBRIATUM (CATASETINAE, ORCHIDACEAE) EXPOSED TO DIFFERENT LIGHT INTENSITIES Cristiano Pedroso-de-Moraes Thiago de Souza-Leal Alinne L. Saoncella Marcílio de Almeida Biología Orchid anatomy sexual expression To 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. 2016 artículo científico 1409-3871 https://www.redalyc.org/articulo.oa?id=44345617007 en http://www.redalyc.org/revista.oa?id=443 Lankesteriana International Journal on Orchidology application/pdf Universidad de Costa Rica Lankesteriana International Journal on Orchidology (Costa Rica) Num.1 Vol.16 |
| title | FLORAL SEXUAL DIFFERENTIATION IN CATASETUM FIMBRIATUM (CATASETINAE, ORCHIDACEAE) EXPOSED TO DIFFERENT LIGHT INTENSITIES |
| topic | Biología Orchid anatomy sexual expression |
| url | https://www.redalyc.org/articulo.oa?id=44345617007 |