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Genetic analysis of lodgepole pine (Pinus contorta) solid-wood quality traits

Kroon, Johan and Fries, Anders and Wu, Harry and Hayatgheibi, Haleh (2017). Genetic analysis of lodgepole pine (Pinus contorta) solid-wood quality traits. Canadian journal of forest research. 47 , 1303-1313
[Journal article]

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Abstract

Potential improvement of lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) solid-wood properties was examined by estimating age trends of inheritance, age-age genetic correlations, and the efficiency of early selection using 823 increment cores sampled from 207 half-sib families at two independent progeny trials, aged 34-35 years, located in northern Sweden. High-resolution radial variation of annual ring width, wood density, microfibril angle (MFA), and modulus of elasticity (clearwood stiffness; MOES) was measured using SilviScan. The dynamic stiffness (MOEtof) of standing trees was also obtained using Hitman ST300. Heritabilities ranged from 0.10 to 0.64 for growth and earlywood, transition-wood, and latewood proportions, from 0.29 to 0.77 for density traits, and from 0.13 to 0.33 for MFA and stiffness traits. Genetic correlations between early age and the reference age (26 years) suggested that early selection is efficient at age 4 years for MFA and between ages 5 to 8 years for density and MOES. Unfavorable diameter-stiffness genetic correlations and correlated responses indicate that breeding for a 1% increase in diameter would confer 5.5% and 2.3% decreases in lodgepole pine MOES and MOEtof, respectively. Index selection with appropriate economical weights for growth and wood stiffness is highly recommended for selective breeding.

Authors/Creators:Kroon, Johan and Fries, Anders and Wu, Harry and Hayatgheibi, Haleh
Title:Genetic analysis of lodgepole pine (Pinus contorta) solid-wood quality traits
Series/Journal:Canadian journal of forest research (1208-6037)
Year of publishing :2017
Volume:47
Page range:1303-1313
Number of Pages:11
Publisher:NRC Research Press
ISSN:1208-6037
Language:English
Publication Type:Journal article
Refereed:No
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:pinus controrta, early selection
Keywords:Pinus contorta, solid-wood properties, early selection, genetic parameters, genetic gain
URN:NBN:urn:nbn:se:slu:epsilon-e-4666
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4666
Additional ID:
Type of IDID
DOI10.1139/cjfr-2017-0152
Web of Science (WoS)000413923400001
ID Code:15130
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:17 Jan 2018 10:07
Metadata Last Modified:17 Jan 2018 10:07

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