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| Format: | Artículo científico |
| Language: | en |
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Universidade Federal de Viçosa
2008
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| Online Access: | https://www.redalyc.org/articulo.oa?id=48813382018 |
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| _version_ | 1866814294243409920 |
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| author | Antelmo Ralph Falqueto |
| author_facet | Antelmo Ralph Falqueto |
| contents | Photosynthetic performance of mangroves Rhizophora mangle and Laguncularia racemosa under field conditions Antelmo Ralph Falqueto Diolina Moura Silva Renata Venturim Fontes Agrociencias photosystem photosynthetic pigments chlorophyll fluorescence In mature mangrove plants Rhizophora mangle L. and Laguncularia racemosa Gaerth. growing under field conditions, photosystem 2 (PS2) photochemical efficiency, determined by the ratio of variable to maximum fluorescence (Fν/Fm), increased during the day in response to salinity in the rainy seasons. During the dry season, fluorescence values (Fo) were higher than those observed in rainy season. In addition, Fo decreased during the day in both season and species, except for R. mangle during the dry season. A positive correlation among Fν/Fm and salinity values was obtained for R. mangle and L. Racemosa during the dry and rainy seasons, showing that photosynthetic performance is maintained in both species under high salinities. Carotenoid content was higher in L. Racemosa in both seasons, which represents an additional mechanism against damage to the photosynthetic machinery. The chlorophyll content was not affected by salinity in either species. 2008 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48813382018 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.3 Vol.32 |
| format | Artículo científico |
| id | redalyc_48813382018 |
| language | en |
| publishDate | 2008 |
| publisher | Universidade Federal de Viçosa |
| spellingShingle | Photosynthetic performance of mangroves Rhizophora mangle and Laguncularia racemosa under field conditions Antelmo Ralph Falqueto Agrociencias photosystem photosynthetic pigments chlorophyll fluorescence Photosynthetic performance of mangroves Rhizophora mangle and Laguncularia racemosa under field conditions Antelmo Ralph Falqueto Diolina Moura Silva Renata Venturim Fontes Agrociencias photosystem photosynthetic pigments chlorophyll fluorescence In mature mangrove plants Rhizophora mangle L. and Laguncularia racemosa Gaerth. growing under field conditions, photosystem 2 (PS2) photochemical efficiency, determined by the ratio of variable to maximum fluorescence (Fν/Fm), increased during the day in response to salinity in the rainy seasons. During the dry season, fluorescence values (Fo) were higher than those observed in rainy season. In addition, Fo decreased during the day in both season and species, except for R. mangle during the dry season. A positive correlation among Fν/Fm and salinity values was obtained for R. mangle and L. Racemosa during the dry and rainy seasons, showing that photosynthetic performance is maintained in both species under high salinities. Carotenoid content was higher in L. Racemosa in both seasons, which represents an additional mechanism against damage to the photosynthetic machinery. The chlorophyll content was not affected by salinity in either species. 2008 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48813382018 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.3 Vol.32 |
| title | Photosynthetic performance of mangroves Rhizophora mangle and Laguncularia racemosa under field conditions |
| topic | Agrociencias photosystem photosynthetic pigments chlorophyll fluorescence |
| url | https://www.redalyc.org/articulo.oa?id=48813382018 |