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Chemical Composition and Wood Anatomy of Eucalyptus globulus Clones: Variations and Relationships with Pulpability and Handsheet Properties

2009; Taylor & Francis; Volume: 29; Issue: 1 Linguagem: Inglês

10.1080/02773810802607559

1532-2319

Mauricio Ramírez‐Rodríguez, Jaime Rodríguez, Claudio Balocchi, Miguel Peredo, Juan Pedro Elissetche, Regis Teixeira Mendonça, Sofía Valenzuela,

Tree Root and Stability Studies

Abstract Abstract Variation and relationships among dasometric parameters, chemical composition, wood anatomy, pulpability (efficacy of kraft delignification), and handsheet properties were studied in fourteen 7-year-old Eucalyptus globulus clones grown in a clonal trial in the Bio-Bio Region, Chile. Three ramets per clone were sampled and all properties were measured for each tree. Results showed variations among clones for parameters associated with wood anatomy, chemical composition, pulpability, and handsheet properties, which are the basis for the improvement of these traits through clonal selection. However, our findings showed that tree size can negatively affect other traits such as basic density and other related parameters as wood consumption, tear index, specific bulk, and Gurley air resistance. Wood density and chemical composition were the most important parameters correlated with pulpability and handsheet properties. Therefore, future efforts in tree improvement should be focused on wood properties such as density, lignin, holocellulose, and α -cellulose contents. Keywords: Eucalyptus globulus handsheetkraft pulpingpulpabilitywood anatomy We 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), Mr. Alex Opazo, and Mrs. Helga Contreras.