Evaluación del potencial de propagación ex situ del abarco (cariniana pyriformis: plantas, lecythidaceae) por medio de ensayos experimentales en vivero con el fin de contribuir a su conservación.

Abstract

This project aims to evaluate the development of a method of asexual propagation of the abarco Cariniana pyriformis by means of experimental trials, considering prep a factorial design of 3 x 3 x 5 that included the use of three types of substrate (peat, coconut fiber and pine bark with sand), three types of cut (apical, nodal, basal), four concentrations of the growth hormone Índole Butyric Acid (IBA at 0%, 0. 6%, 0.8%, 1%) and one of Hormonagro1 (talc), in order to evaluate the propagation of the species. Initially, the location, georeferencing, phenological state and number of mature adult abarco individuals were established, registering a total of 53 individuals, 41 of them in AGROSAVIA "La Libertad", 5 in the ICA of Villavicencio, and 7 in the town of San Juan de Arama, Meta -Reserva de la Sociedad Civil "Los Maracos". Subsequently, the experimental treatments for the rooting of the cuttings were assembled and implemented, where a total of 45 treatments were obtained and 54 replicates per treatment were carried out, a weekly monitoring was carried out during 8 consecutive weeks. Variables such as the appearance of buds, leaves and presence of roots were considered prep. A quantitative approach was used with a descriptive design - Factorial Analysis and an analysis of Variance ANOVA with the Kruskal - Wallis test was performed to detect significant differences between treatments. Where a greater response to the number of buds, leaves and callus was obtained with the control treatment in the basal zone and in the peat substrate, with an average of 3,35 buds and 4,99 leaves; the formation of callus was observed in 1.81% of the cuttings which is directly related to undifferentiated cells involved in rooting. Finally, the protocol for asexual propagation of abarco was established, which includes relevant information on the species, appropiate transport for subsequent planting, and the conditions and individuals that showed the best results in this study, based on the experience obtained under the parameters established for this study.