Abstract
Tree stems deviating from the vertical position react by the formation of tension wood (TW) or compression wood (CW), which are called in general as reaction wood (RW), in which the cells are modified chemically and anatomically. The focus of the present work is the mechanical behavior of TW in five 37-year-old Eucalyptus species, which were grown on a planting area with an average slope of 28% leading to decentralized pith in the trees, which is an unequivocal indication of the presence of RW. TW and opposite wood (OW) samples were isolated and subjected to a compression-parallel-to-grain test. It was observed that TW is less resistant and less stiff than the OW.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors are grateful to CAPES and CNPq (Process 311574/2013-0) for the grants and financial support during this work. This study was supported by Ministério da Ciência, Tecnologia e Inovação Conselho Nacional de Desenvolvimento Científico e Tecnológico, Funder Id: 10.13039/501100003593 (ref. no. 311574/2013-0) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
Employment or leadership: None declared.
Honorarium: None declared.
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