Modeling of basic density of wood from Eucalyptus grandis and Eucalyptus urophylla using nondestructive methods

CERNE

Allan Motta Couto¹  Paulo Fernando Trugilho²  Thiago Andrade Neves¹  Thiago De Paula Protásio¹  Vânia Aparecida De Sá¹ 

[1] ,Universidade Federal de Lavras Departamento de Ciências Florestais Lavras MG ,Brazil

关键词: Resistography;    Pilodyn®;    estimate;    Resistografia;    Pilodyn®;    estimativa;   

DOI  :  10.1590/S0104-77602013000100004

来源: SciELO

【 摘 要 】

The objective of this study was to evaluate the accuracy of nondestructive variables in inferring basic density of wood from Eucalyptus grandis and Eucalyptus urophylla. A total of 27 clones of Eucalyptus urophylla and 22 clones of Eucalyptus grandis were used, sourced from a clonal trial set up in Martinho Campos, Minas Gerais. After evaluation using nondestructive techniques of resistography and pin penetration at a constant pressure (Pilodyn®), individuals were felled and disks were removed from the 2%, 10%, 30%, 50% and 70% portions of the merchantable height section, and also from the portion 1.30 m above ground level. Basic density was determined by the water immersion method. Values of basic density ranged from 0.412 to 0.609 g.cm-3 for clones at age 42 months and from 0.408 to 0.664 g.cm-3 for clones at age 54 months. The clones of Eucalyptus urophylla provided higher values of average basic density in relation to Eucalyptus grandis. The variable 'amplitude' had better correlation with basic density in comparison with pin penetration at a constant pressure. Nondestructive evaluation can be used in mass preselection of genetic materials, prior to subjecting them to a more accurate, reliable evaluation.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License