Longitudinal variation of wood basic density and anatomy of Curatella americana L

Abstract

Studies with Curatella americana L wood are justified due to scarce information about this species. In this context, we collected wood samples from six trees (ages varied between 30-40 years old) planted in Selvíria (MS- Brazil). Our objective was to verify longitudinal variation of basic density and wood anatomy. From each sampled tree, 5 cm thick discs were removed, at three different heights: base of the trunk (≈ 15cm from the ground), DBH (diameter at breast height, 1m30cm from the ground), and top of the trunk (commercial height of tree with a minimum diameter of 5 cm). We use standardized methods for basic density and wood anatomy. According to results, we concluded that basic density, fiber length, fiber wall thickness, vessel element length, vessel diameter, and vessel frequency were influenced by different heights. However, in ray percentage, no significant variation was observed. The basic density correlates positively with length and fiber wall thickness, and negatively with vessel frequency.