Resumo

MOGLIA, Juana Graciela; BRAVO, Sandra  e  GEREZ, Roxana. Comparative wood anatomy of two select origins of Eucalyptus camaldulensis (Myrtaceae), implanted in Santiago del Estero, Argentine Chaco Region. Bol. Soc. Argent. Bot. [online]. 2008, vol.43, n.3-4, pp.239-246. ISSN 1851-2372.

The aim of the present research was to study radial wood variation of two different origins in Eucalyptus camaldulensis Dehnh. proceeding from a seed allotment in Zimbabwe and Emu Creek Queensland. For this study seven trees of 5 years old, of each origin, were selected from an implanted trial in Santiago del Estero. Two samples were taken from transverse sections at 1.30 m height on the North radius, one located at 25% and the other at 80% of distance to the pith. Frequency, diameter, and length of vessels, fiber length, tissues percentages and ray types were analyzed. Univariate analysis was performed using a nested design, for «origins» and «trees». The «distance to the pith» was employed as repeated measures, and evaluated with a mixed model. Both origins showed wood diffuse porosity, vessels mainly solitary and homogeneous rays. No differences were found between origins for any studied variables. Fiber and vessel lengths showed significant differences between distances to the pith. Frequency and length of vessels, ray frequency and tissue proportions varied significantly between trees.

Palavras-chave : Eucalyptus; Procedence; Wood; Comparative anatomy.

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