Assessment of Growth Stresses in Eucalyptus Trees and Their Relationship with the Characteristics of Growth and Some Wood Properties

摘要

The objective of this work was to evaluate the longitudinal growth stresses in Eucalyptus clones; to verify their variability; to estimate the correlation between the longitudinal growth stress and the growth characteristics of the trees and to estimate the correlation between growth stress and wood characteristics, According to the results it was observed that the effect of the clone was highly significant, indicating high genetic variability. The average estimated longitudinal growth stress was equal to 279 kgf o cm , varying from 112 to 433 kgf -cm"2. The correlation between growth stress and growth characteristics of the trees was not significant, nor was the correlation between growth stress and wood lignin content. Longitudinal growth stress presented positive and significant correlation with lumber split, basic density, grain angle, volumetric, radial and tangential shrinkage and cleavage strength.