Photosyntetic rates of Leonia glycycarpa and Compsoneura trianae in Arosemena Tola, amazon region, Ecuador
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| Autores: | , , , , , |
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| Format: | artículo original |
| Status: | Versión publicada |
| Fecha de Publicación: | 2025 |
| Beskrivelse: | Introduction. Photosynthesis in wild species has been little evaluated, so knowing its rates is important for the management of its production and possible exploitation. Objective. To determine the photosynthetic rates of Leonia glycycarpa and Compsoneura trianae Warb. in Arosemena Tola, Napo, Ecuador. Materials and methods. The study was carried out at the Amazon Experimental Research and Production Center in Arosemena Tola, Napo, Ecuador, in April 2023. Random sampling was carried out and with a portable environmental photosynthesis system, photosynthesis, transpiration, stomatal conductance, substomatal CO2, leaf temperature and molar air flow were recorded. The data were processed through the Table Curve 2D program. Results. Between 1:00 p.m. and 3:00 p.m., L. glycycarpa reached photosynthesis values of 3.5 mmol m-2 s-1, while C. trianae reached 1.4 mmol m-2 s-1. Between 07:00 and 08:00 h, the highest values were obtained in transpiration rate (1.4 and 1.5 mmol m-2 s-1 for L. glycycarpa and for C. trianae, respectively), stomatal water conductance (0.7 and 0.5 mol m-2 s-1 for L. glycicarpa and for C. trianae, respectively) and substomatic CO2. (460 vpm for L. glycicarpa and 500 vpm for C. trianae); the highest leaf temperature in C. trianae was at 08:00 h, while in L. glycyccarpa at 11:00 h. The mass flow between 10:00 and 13:00 h presented its minimum in C. trianae and in L. glycycarpa it represented its maximum. Conclusions. The photosynthesis rate of L. glycycarpa and C.trianae were lower than other species in the literature, due to cloudy conditions and tree cover. The concentration of the parameters: transpiration, stomatal water conductance and substomatal CO2, was higher in the first hours of the day, with higher humidity conditions. |
| País: | Portal de Revistas UCR |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Sprog: | Español |
| OAI Identifier: | oai:portal.revistas.ucr.ac.cr:article/1067 |
| Online adgang: | https://revistas.ucr.ac.cr/index.php/ragromeso/article/view/1067 |
| Palabra clave: | agua, dióxido de carbono, plantas silvestres, transpiración stomatal conductance carbon dioxin air molar flow transpiration |