Abstract:In order to select good provenance and family, the genetic characteristics in growth and wood properties associated with pulp wood of eight-year-old Eucalyptus pellita from different provenances in Guangxi Dongmen State Forest Farm were studied. The results showed that the average length and width of wood fiber was 590.9 and 28.9 μm, the fiber aspect ratio was 20.34 with kink index of 0.29, and the aspect ratio and kink index of sapwood fiber were larger than those of heartwood. There were very significant positive correlations between DBH and tree height, density with fiber length-width ratio and kink index, as well as kink index with length-width ratio of sapwood fiber, while kink index was very significant negative correlation with length-width ratio of heartwood fiber. So, according to principal component analysis (PCA), the provenances 4, 13, 10 were excellent, and 25 families were good, in which 146, 084 and 53-11 families were the top three.
