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Acta Biológica Colombiana
versión impresa ISSN 0120-548X
Resumen
SANCLEMENTE, MARIA ANGÉLICA y PENA, ENRIQUE JAVIER. Growth and Photosynthetic Efficiency of Ludwigia decurrens Walter (Onagraceae) Under Different Concentrations of Nitrogen. Acta biol.Colomb. [online]. 2008, vol.13, n.1, pp.175-186. ISSN 0120-548X.
Growth parameters and quantum efficiency measurements of the photosynthesis were evaluated on the emergent macrophyte Ludwigia decurrens under different concentrations of nitrogen (0 mg/L, 465 mg/L y 930 mg/L). Growth was determined as measurements of total length and leaf area, and the emission of chlorophyll fluorescence was used as a measure of real quantum efficiency of the photosystem II. During the study period, a general tendency of increase of growth parameters and quantum efficiency with increase of nitrogen supply was noted. However, there was no significant difference (pLudwigia decurrens can grow on enriched nitrogen environments.
Palabras clave : growth; photosynthesis; fluorescence; Ludwigia; nitrogen.