Differences in wood properties among Eucalyptus grandis and Eucalyptus grandis x Eucalyptus urophylla with different degrees of ploidy

We compared the anatomy, density, chemical contents, and bioenergy values of Eucalyptus grandis hybrids x urophylla wood originating from diploids, triploids tetraploids. hypothesize that with different degrees ploidy have variations as a result sets chromosomes producing phenotypic expressions constituents, such variation in cell size frequency, which would directly influence quality. Twenty-year-old trees were cut, eight for each ploidy: diploids tetraploids are E. grandis; urophylla. use standardized techniques. Our hypothesis was confirmed. Triploid tetraploid presented wider trunks, taller longer stems crowns to diploid trees. Wood density showed significant radial only while triploid more homogeneous. In polyploid trees, anatomical features did not clearly present pattern. higher than The constituents varied pith bark three ploidies, but no differences between ploidies found. For energy generation purposes, desirable