Morpho-physiological monitoring of oil palms (Elaeis guineensis Jacq.) affected by spear rots (PC).

 

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Detalles Bibliográficos
Autores: Torres Acuña, Joaquín, Gutiérrez Soto, Marco Vinicio, Chinchilla López, Carlos Manuel
Formato: artículo original
Fecha de Publicación:2015
Descripción:The morphology, growth and physiology of oil palms (Elaeis guineensis Jacq., Deli x Nigeria variety) was characterized at different stages of development of the condition known as ‘dry spear’ or FS (for ‘flecha seca’ in Spanish), and some morpho-physiological indicators associated with a predisposition for the disorder were identified. In Costa Rica, ‘FS’ has symptomology very similar to spear rot or PC (pudrición del cogollo), as it was described in South America. ‘PC’ is a dynamic disorder of complex etiology that affects the development and physiology of palms. The symptomology (‘yellowing’, drying and rotting/) occurs in young leaves and in tissues near the meristem. The aerial symptoms are associated with a deteriorated fine root system. During the initial stages of the disorder in the season with the least precipitation (3.8-73 mm/month), the palms presented low water potential in the leaves, increases in stomatic conductance, reduction in foliage temperature, higher chlorophyll content and reduction of vegetative development. The loss of the fine root system was possibly the cause of the interruption of hormonal ‘signals’ toward the aerial part; which caused the loss of stomatic control of transpiration that led to a hydric, nutritional and energetic imbalance. The anomalous behavior of stomatic conductance and other variables (root density and petiole cross-section), described in a previous article (this journal), is an indicator that could signal conditions of predisposition to a syndrome like PC.
País:Kérwá
Institución:Universidad de Costa Rica
Repositorio:Kérwá
OAI Identifier:oai:https://www.kerwa.ucr.ac.cr:10669/73300
Acceso en línea:http://asd-cr.com/index.php?option=com_content&view=article&id=209%3Apublicaciones-%20esp&catid=46%3A1991&Itemid=88&lang=es
https://hdl.handle.net/10669/73300
Access Level:acceso abierto
Palabra clave:PC
Stress
Growth
Photosynthesis
Food industry