Modeling of wood properties from parameters obtained in nursery seedlings

Author(s)

Goncalves, Raquel ^[1] ; Mansini Lorensani, Rafael Gustavo ^[1] ; Merlo, Esther ^[2] ; Santaclara, Oscar ^[2] ; Touza, Manuel ^[3] ; Guaita, Manuel ^[4] ; Jose Lario, Francisco ^[5]

Affiliation

^[1] Univ Estadual Campinas, UNICAMP, FEAGRI, Sch Agr Engn, Av Candido Rondon 501, BR-13083875 Campinas, SP - Brazil

^[2] MADERA Plus, Parque Tecnol Galicia, Rua Vigo 2, San Cibrao Das Vinas Our 32900 - Spain

^[3] GAIN CIS MADEIRA, Parque Tecnol Galicia, Avda Galicia 5, E-32901 San Cibrao Das Vinas, Ourense - Spain

^[4] Univ Santiago de Compostela, Agroforestry Engn, Polytech Sch Lugo, Campus Univ, Lugo 27002, Galicia - Spain

^[5] TRAGSA, Vivero Maceda, Carretera Maceda Baldrei, Km 2, Maceda 32708, Galicia - Spain

• Document type: Journal article
• Source: CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIER; v. 48, n. 6, p. 621-628, JUN 2018.
• Web of Science Citations: 0

Abstract

Early selection of trees allows acceleration of genetic improvement, as well as processes related to forest management, to improve the quality of the wood produced; however, to reach this objective, it is necessary to know which parameters can be used as predictors of a tree's aged condition. The objective of this research was to study parameters that are measurable in nursery seedlings and that could be used in prediction models of basic density (BDt), modulus of elasticity (E-Mt), and strength (f(mt)) of wood from trees. The tests were performed in 240 seedlings (3 and 6 months old) and in 52 trees (72 months old) from seven genetic units of two species: three Eucalyptus clones and four Pinus pinaster progenies. In the seedlings, measurements of longitudinal velocity of ultrasonic waves (VLs), basic density (BDs), height (H-s), diameter (D-s), strength (f(ts)), and modulus of elasticity (E-ts) in tension parallel to the grain were obtained. The EMt and fmt can be predicted by parameters obtained in seedlings of the same genetic unit. Thus, the use of these parameters, in association with others already used in selection programs, may increase the positive results of the early selection, with economic gains and time reductions in forest management. (AU)

• FAPESP's process: 15/11926-7 - Early prediction of wood properties using wave propagation in young trees
• Grantee: Rafael Gustavo Mansini Lorensani
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 13/03449-9 - Early knowledge of wood properties using wave propagation in young trees
• Grantee: Rafael Gustavo Mansini Lorensani
• Support Opportunities: Scholarships in Brazil - Doctorate