"Análisis de ensayos de procedencia-progenie de (Dipteryx panamensis (Pittier) Record & Mell), en la Zona Norte y Sur de Costa Rica."
Abstract
Almendro (Dipteryx panamensis) is a native tree species with a wide natural
distribution from Costa Rica and throughout Amazons basin. It is known by its
high ecological value explained by the importance of its seeds, as a food source
for a large fauna. This leguminous tree has been planted and investigated in
Costa Rica since late 80’s until today, well known for its high wood density. Due to
its wood valuable potential, GENFORES (Forest gene conservation and breeding
cooperative) initiated a tree improvement program, as a development strategy to
promote its utilization as an attractive crop option in low and wet lands in the
American tropics. The objective of this study was to evaluate two provenanceprogeny
tests established 4 years ago in north zone (San Carlos) and southern
Pacific Costa Rica (Osa, peninsula). Materials came from three native
provenances (Puerto Viejo, Sarapiquí; Crucitas, San Carlos and San Marcos, San
Carlos) and 10 open-pollinated families within each provenance. Results showed
no significant differences among provenances in any of the traits evaluated, which
suggests focusing on best families. If operational plantations are established with
the seed collected from the four best trees, within the top five-ranking families,
genetic gain in wood commercial volume per tree would increase more than 45%
at age 4. Genetic correlations among both sites registered values over 90%,
which reflects a high genetic stability and the possibility of a single national
breeding program for this tree species.
Description
Proyecto de Graduación (Licenciatura en Ingeniería Forestal). Instituto Tecnológico de Costa Rica, Escuela de Ingeniería Forestal, 2014.