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Multivariate approach in Eucalyptus and its effects in the genotypes × environments interaction

Author(s): Osmarino Pires Dos Santos, Ivan Ricardo Carvalho, Vinícius Jardel Szareski, Alan Junior De Pelegrin, Mauricio Horbach Barbosa, Francine Lautenchleger, Velci, Queiróz De Souza

The study aimed at the selection and evaluation of Eucalyptus spp. clones for the production of wood by means of multivariate statistical techniques. A total of 84 Eucalyptus clones were used belonging to the breeding program in Rio Grande do Sul, Brazil, in a randomized block design, with 20 replicates. The selection of clones from their values of genetic divergence and heterogeneity in relation to the others can be used to increase variability in breeding populations. Improvement strategies such as the Intrapopulation Recurrent Selection can be "fed" from selections made based on these parameters, but also focusing on increasing productivity and improving wood technology. There is a great difference in behavior of the clones for each environment, demonstrating the influence of the genotype × environment interaction, which can be evaluated later in the clonal tests amplified or in the observation plantings of these clones that will serve for the future indication of genotypes for the commercial plantations