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Effect of number of annual rings and tree ages on genomic predictive ability for solid wood properties of Norway spruce

Zhou, Linghua and Chen, Zhiqiang and Olsson, Lars and Grahn, Thomas and Karlsson, Bo and Wu, Harry and Lundqvist, Sven-Olof and Garcia Gil, Rosario (2020). Effect of number of annual rings and tree ages on genomic predictive ability for solid wood properties of Norway spruce. BMC Genomics. 21 , 323 , 1-12
[Journal article]

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Abstract

Background: Genomic selection (GS) or genomic prediction is considered as a promising approach to accelerate tree breeding and increase genetic gain by shortening breeding cycle, but the efforts to develop routines for operational breeding are so far limited. We investigated the predictive ability (PA) of GS based on 484 progeny trees from 62 half-sib families in Norway spruce (Picea abies (L.) Karst.) for wood density, modulus of elasticity (MOE) and microfibril angle (MFA) measured with SilviScan, as well as for measurements on standing trees by Pilodyn and Hitman instruments.
Results: GS predictive abilities were comparable with those based on pedigree-based prediction. Marker-based PAs were generally 25-30% higher for traits density, MFA and MOE measured with SilviScan than for their respective standing tree-based method which measured with Pilodyn and Hitman. Prediction accuracy (PC) of the standing tree-based methods were similar or even higher than increment core-based method. 78-95% of the maximal PAs of density, MFA and MOE obtained from coring to the pith at high age were reached by using data possible to obtain by drilling 3-5 rings towards the pith at tree age 10-12.
Conclusions: This study indicates standing tree-based measurements is a cost-effective alternative method for GS. PA of GS methods were comparable with those pedigree-based prediction. The highest PAs were reached with at least 80-90% of the dataset used as training set. Selection for trait density could be conducted at an earlier age than for MFA and MOE. Operational breeding can also be optimized by training the model at an earlier age or using 3 to 5 outermost rings at tree age 10 to 12 years, thereby shortening the cycle and reducing the impact on the tree.

Authors/Creators:Zhou, Linghua and Chen, Zhiqiang and Olsson, Lars and Grahn, Thomas and Karlsson, Bo and Wu, Harry and Lundqvist, Sven-Olof and Garcia Gil, Rosario
Title:Effect of number of annual rings and tree ages on genomic predictive ability for solid wood properties of Norway spruce
Year of publishing :2020
Volume:21
Article number:323
Number of Pages:12
Publisher:BMC
ISSN:1471-2164
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
URN:NBN:urn:nbn:se:slu:epsilon-p-105998
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105998
Additional ID:
Type of IDID
DOI10.1186/s12864-020-6737-3
Web of Science (WoS)000530280200001
ID Code:17169
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Genetics and Plant Physiology
Deposited By: SLUpub Connector
Deposited On:02 Jul 2020 11:00
Metadata Last Modified:02 Jul 2020 11:00

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