Abstract
Variation in wood anatomy and biometric variables was studied in 14 7-year-old Eucalyptus globulus clones grown in a clonal trial in Arauco, Bio-Bio Region, Chile. Biometric characteristics were measured for each tree and the anatomical variables were measured at three radial positions by image analysis on transverse microsections cut from radial increment cores sampled at breast height. Results showed, that among clones wide ranges of variation were found for vessel frequency, vessel area and vessel coverage. However, narrow ranges of variation were found for fiber wall thickness, fiber diameter and lumen diameter. From pith to bark, mean vessel area and vessel coverage increased gradually, whereas the vessel frequency decreased. The fiber wall thickness did not differ significantly from pith to bark. Mean fiber and lumen diameters showed the same radial pattern, increasing from pith to the midpoint of the radius to reach a plateau close to the bark. Furthermore, important commercial volume gains that can exceed 100% were found. Considering the commercial importance of tree volume, vessel and fiber anatomy in the pul** and papermaking process, it is suggested that the information given in this study may be used as an additional criteria for the selection of E. globulus.
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Acknowledgments
We want to thank the following institutions and people for their financial and technical support: Project FONDEF DO3I1103, Bosques Arauco S.A., Bioforest S.A., CONICYT, Laboratory of wood anatomy (Bio-Bio University), Dr. Claudio Balocchi, Dr. Juan Pedro Elissetche, Mr. Alex Opazo and Mrs. Helga Contreras.
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Ramírez, M., Rodríguez, J., Peredo, M. et al. Wood anatomy and biometric parameters variation of Eucalyptus globulus clones. Wood Sci Technol 43, 131–141 (2009). https://doi.org/10.1007/s00226-008-0206-5
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DOI: https://doi.org/10.1007/s00226-008-0206-5