Files
Abstract
Objective: Identify and select primavera plus trees (Roseodendron donnell-smithii Miranda syn Tabebuia donnell-smithii Rose) and roble (Tabebeuia rosea Bertol) in Soconusco, Chiapas, Mexico.Design/methodology/approach: Methods were applied to qualify morphometric markers such as height, normal diameter, total height and free stem height as main indicators. With selection intensities to identify future genetic gains, 155 candidate trees and 18 plus trees from Tabebuia donnell-smithii and 140 candidate trees and 16 plus trees from T. rosea were identified.Results: The 34 plus trees showed superior characteristics in quality and volume, so they were grouped in List A, which is the population that is recommended for immediate use as Forest Germplasm Producing Units of known origin and provenance. These trees are part of the base population for the improvement program in the Soconusco region (Chiapas, Mexico). The 295 candidate trees maintain at least one superior character (volume or quality) can be considered in the improvement population, being located in List B.Limitations on study/implications: This work allows defining the commercial population for immediate use and the base population for improvement. Candidate individuals with potential to be incorporated into future controlled crossing programs were also identified. The procedure allows generating records of the population mass and accreditation of the plus tree phenotype.Findings/conclusions: This work allows defining the commercial population for immediate use and the base population for improvement. Candidate individuals with potential to be incorporated into future controlled crossing programs were also identified. The procedure allows generating records of the population mass and accreditation of the plus tree phenotype.