Preliminary genetic diversity data of two neotropical trees in the old-growth forest of Costa Rica
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Minquartia guianensis y Hyeronima alchorneoides son dos especies de árboles maderables del bosque tropical húmedo de Costa Rica. Poco se sabe sobre la diversidad genética de estas especies. Utilizando 20 imprimadores de ADN polimórfico amplificado al azar (RAPD), estimamos los niveles de diversidad y varianza dentro y entre tres áreas de la Estación Biológica La Selva para cada especie. La diversidad genética se calculó mediante estimadores clásicos y bayesianos, y los resultados fueron similares. Estos indicaron una alta varianza dentro de los parches (78% para M. guianensis y 87% para H. alchorneoides). Además, estimamos la distancia genética, y los dendogramas indicaron una falta de diferenciación entre los parches para ambas especies. Nuestros resultados son consistentes con estudios sobre la diversidad genética en otras especies de árboles tropicales.
Minquartia guianensis and Hyeronima alchorneoides are two valuable woody species in the Costa Rican tropical wet forest. Little is known about the genetic diversity of these species. Using 20 random amplified polymorphic DNA (RAPD) primers, we estimated the levels of diversity and variance within and among three distinct areas for each species within La Selva Biological Station. Genetic diversity was calculated using classical and Bayesian estimators, and their values were similar. The results indicated high levels of variance within patches (78% in M. guianensis and 87% in H. alchorneoides). We also estimated the genetic distance, and the dendrograms indicated a lack of differentiation between the patches for both species. Our data are consistent with studies of genetic variation in other tropical trees.
Minquartia guianensis and Hyeronima alchorneoides are two valuable woody species in the Costa Rican tropical wet forest. Little is known about the genetic diversity of these species. Using 20 random amplified polymorphic DNA (RAPD) primers, we estimated the levels of diversity and variance within and among three distinct areas for each species within La Selva Biological Station. Genetic diversity was calculated using classical and Bayesian estimators, and their values were similar. The results indicated high levels of variance within patches (78% in M. guianensis and 87% in H. alchorneoides). We also estimated the genetic distance, and the dendrograms indicated a lack of differentiation between the patches for both species. Our data are consistent with studies of genetic variation in other tropical trees.
Description
Ciencia y Tecnología, 39: 35-44,2025 - ISSN: 2215-5708
Keywords
diversidad genética, La Selva, árbol dioico, árbol tropical, marcadores moleculares