PERFORMANCE OF Acacia saligna (Labill.) H. L. Wendl. PROVENANCES IN THE COQUIMBO REGION, CHILE

• Autor(a) principal: Pobrete, Freddy Mora
• Data de Publicação: 2005
• Outros Autores: Rojas, Raúl Meneses
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/1786
• topic: variance component; type B genetic correlation; genotype x environment interaction.; componentes de varianza; correlación genética tipo B; interacción genotipo x ambiente

Fourteen Acacia saligna provenance were evaluated based on the growth at 15 months of age in two sites of northern Chile. Type B genetic correlations were estimated to examine the genotype x environment interaction (G x E) of total height, mean canopy diameter and basal diameter. Restricted Maximum Likelihood (REML) method was used to calculate the variance components. Genetic correlation values were moderate (GpB = 0,46) to low (GpB = 0,27 y 0,17) in total height, and basal diameter and mean diameter of tree canopy, respectively, indicating high G x E interactions. There was significant difference between provenances in single-site studied (p ≤ 0,01). Provenance mean growth varied among the sites, showing greater potential towards south of the Region. Provenance specific groups selection for each site is necessary if G x E interaction continues in the future, since the best group for a specific site not always will maintain its superiority in the other.