Relación entre la densidad estomática, la transpiración y las condiciones ambientales en feijoa (Asellowiana [O. berg] burret)

Pineapple guava is a plant with a high adaptation to environmental conditions of the Andean region. Although there exists an increased national and international demand, there are many physiological aspects that still need to be known. This study aimed to evaluate the transpiration rate, the density of stomata, and the associated environmental factors in the upper and lower stratum of the tree crown of the pineapple guava crop in Tibaná municipality (Boyacá, Colombia), under open air conditions. Measurements were made of leaf temperature, transpiration rate, irradiance and relative humidity (RH) in two strata during 7 daily hours (8:00, 9:00, 10:00, 11:00, 12:00, 13:00 and 14:00 h). The upper stratum showed a higher transpiration rate and a major average number of stomata, 91/mm2 vs. 78/mm2 in the lower stratum. Leaf transpiration increased directly with increasing temperature (more in the upper stratum than in the lower stratum) and with the irradiance; while transpiration increased as the relative humidity decreased.

• Autores: Naizaque, Jeison; García, Gustavo; Fischer, Gerhard; Melgarejo, Luz Marina
• Tipo de recurso: Article of journal
• Fecha de publicación: 2014
• Institución: Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
• Repositorio: Repositorio Institucional UDCA
• Idioma: spa
• OAI Identifier: oai:repository.udca.edu.co:11158/1871
• Acceso en línea: https://revistas.udca.edu.co/index.php/ruadc/article/view/946
• Palabra clave: Estomas; Irradiancia; Humedad relativa; Temperatura; Estrato copa; Feijoa; Árboles; Temperatura
• Rights: openAccess
• License: Derechos Reservados - Universidad de Ciencias Aplicadas y Ambientales