Propriedades e classifica??o da madeira aplicadas à sele??o de genótipos de Eucalyptus

摘要

The objective of this study was to classify and select superior genotypes of eucalypt based on the properties of its wood, utilizing cluster analysis, the Tocher's optimization method aiming to obtain various products. Forty-four genotypes adapted to the environmental conditions of northwestern Minas Gerais were used. Physical, mechanical resistance and chemical wood characteristics were used for the classification of the materials. Cluster analysis classified the genotypes in 11 different groups with high variability or divergence among them. According to the average values of the characteristics presented by the formed groups, it was possible to define new potential clones, which will certainly provide wood of superior quality. The genotypes from groups V, VI and VIII show potential for the production of sawed wood, also facilitating the generation of natural hybrids, which may be used in future programs of genetic improvement of Eucalyptus.