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Genetic Improvement of Sawn-Board Stiffness and Strength in Scots Pine (Pinus sylvestris L.)

Fundova, Irena and Hallingbäck, Henrik and Jansson, Gunnar and Wu, Harry (2020). Genetic Improvement of Sawn-Board Stiffness and Strength in Scots Pine (Pinus sylvestris L.). Sensors (Basel, Switzerland). 20 , 1129 , 2-19
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Abstract

Given an overall aim of improving Scots pine structural wood quality by selective tree breeding, we investigated the potential of non-destructive acoustic sensing tools to accurately predict wood stiffness (modulus of elasticity, MOE) and strength (modulus of rupture, MOR) of sawn boards. Non-destructive measurements of wood density (DEN), acoustic velocity (VEL) and MOE were carried out at different stages of wood processing chain (standing trees, felled logs and sawn boards), whilst destructively measured stiffness and strength served as benchmark traits. All acoustic based MOE and VEL estimates proved to be good proxies (r(A) > 0.65) for sawn-board stiffness while MOETREE, VELHIT and resistograph wood density (DENRES) measured on standing trees and MOELOG and VELFAK measured on felled logs well reflected board strength. Individual-tree narrow-sense heritability (hi2) for VEL, MOE and MOR were weak (0.05-0.26) but were substantially stronger for wood density (0.34-0.40). Moreover, additive genetic coefficients of variation for MOE and MOR were in the range from 5.4% to 9.1%, offering potential targets for exploitation by selective breeding. Consequently, selective breeding based on MOETREE, DENRES or stem straightness (STR) could improve several structural wood traits simultaneously.

Authors/Creators:Fundova, Irena and Hallingbäck, Henrik and Jansson, Gunnar and Wu, Harry
Title:Genetic Improvement of Sawn-Board Stiffness and Strength in Scots Pine (Pinus sylvestris L.)
Year of publishing :2020
Volume:20
Article number:1129
Number of Pages:19
Publisher:MDPI
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:Structural timber, non-destructive testing, wood quality, modulus of elasticity, modulus of rupture, acoustic velocity, heritability, genetic correlation, tree breeding, genetic improvement
URN:NBN:urn:nbn:se:slu:epsilon-p-105304
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105304
Additional ID:
Type of IDID
DOI10.3390/s20041129
Web of Science (WoS)000522448600180
ID Code:16935
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:26 May 2020 12:24
Metadata Last Modified:26 May 2020 12:24

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