Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

Effects of light intensity on the morphology and CAM photosynthesis of Vanilla planifolia Andrews

Díez, María Claudia and Moreno, Flavio and Gantiva, Edison (2017) Effects of light intensity on the morphology and CAM photosynthesis of Vanilla planifolia Andrews. Revista Facultad Nacional de Agronomía Medellín, 70 (1). pp. 8023-8033. ISSN 2248-7026

Texto completo

[img]
Vista previa
PDF - Versión Publicada
Available under License Creative Commons Attribution Non-commercial.

336kB

URL oficial: https://revistas.unal.edu.co/index.php/refame/arti...

Resumen

Vanilla planifolia is a neotropical orchid, whose fruits produce the natural vanilla, a fundamental ingredient for the food and cosmetic industry. Because of its importance in the world market, it is cultivated in many tropical countries and recently its cultivation has started in Colombia. This species requires shade for its development; however, the optimal of light conditions are unknown. This work evaluates the effect of different light intensities on CAM photosynthesis, physiology, morphology, and growth of this species. For this, vanilla seedlings were subjected to four treatments of relative illumination (RI) (T1=8%, T2=17%, T3=31% and T4=67%). Most CO2 assimilation occurred along night in all treatments, which confirms that vanilla is a strong CAM species. Plants grown under high lighting (67% RI) had almost half of the photosynthesis in treatments of intermediate lighting (17 and 31%), which is consistent with the lower nocturnal acid accumulation in that treatment. Likewise, the photochemical efficiency of photosystem II (Fv / Fm) showed that in plants of the 67% RI occurred high radiation stress. On the other hand, vanilla plants reached greater length, leaf area, and total biomass when grown under intermediate radiation (17 and 31% RI). These results suggest that high radiation alters the functioning of vanilla plants, inhibiting photosynthesis and growth, and that highly shaded environments not significantly affected the CAM photosynthesis of vanilla; however, in the long-term this species showed higher photosynthesis and growth under intermediate levels of radiation

Tipo de documento:Artículo - Article
Palabras clave:Chlorophyll fluorescence, Gas exchange, Orchids, Photosynthetic pigments, Titratable acidity, Tropical crops
Temática:6 Tecnología (ciencias aplicadas) / Technology > 63 Agricultura y tecnologías relacionadas / Agriculture
Unidad administrativa:Revistas electrónicas UN > Revista Facultad Nacional de Agronomía Medellín
Código ID:67016
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :18 Septiembre 2018 21:19
Ultima modificación:18 Septiembre 2018 21:19
Ultima modificación:18 Septiembre 2018 21:19
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Metabiblioteca OAIster BASE BDCOL Registry of Open Access Repositories SNAAC Red de repositorios latinoamericanos eprints Open archives La referencia Tesis latinoamericanas OpenDOAR CLACSO
Este sitio web se ve mejor en Firefox