Wu, Harry and Hallingbäck, Henrik and Sanchez, Leopoldo
(2016).
Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression.
G3 genes - genomes - genetics. 6
:3
, 529-540
[Research article]
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Available under License Creative Commons Attribution. 2MB |
Abstract
In the domestication and breeding of tree species that suffer from inbreeding depression ( ID), the long-term performance of different breeding strategies is poorly known. Therefore, seven tree breeding strategies including single population, subline, selfing, and nucleus breeding were simulated using a multi-locus model with additive, partial, and complete dominance allele effects, and with intermediate, U-shaped, and major allele distributions. The strategies were compared for genetic gain, inbreeding accumulation, capacity to show ID, the frequencies and fixations of unfavorable alleles, and genetic variances in breeding and production populations. Measured by genetic gain of production population, the nucleus breeding and the single breeding population with mass selection strategies were equal or superior to subline and single breeding population with within-family selection strategies in all simulated scenarios, in spite of their higher inbreeding coefficients. Inbreeding and cross-breeding effectively decreased ID and could in some scenarios produce genetic gains during the first few generations. However, in all scenarios, considerable fixation of unfavorable alleles rendered the purging performance of selfing and cross-breeding strategies ineffective, and resulted in substantial inferiority in comparison to the other strategies in the long-term.
Authors/Creators: | Wu, Harry and Hallingbäck, Henrik and Sanchez, Leopoldo | ||||||
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Title: | Performance of Seven Tree Breeding Strategies Under Conditions of Inbreeding Depression | ||||||
Series Name/Journal: | G3 genes - genomes - genetics | ||||||
Year of publishing : | 2016 | ||||||
Volume: | 6 | ||||||
Number: | 3 | ||||||
Page range: | 529-540 | ||||||
Number of Pages: | 12 | ||||||
Publisher: | Genetics Society of America | ||||||
ISSN: | 2160-1836 | ||||||
Language: | English | ||||||
Publication Type: | Research article | ||||||
Refereed: | Yes | ||||||
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 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Genetics (medical genetics to be 30107 and agricultural genetics to be 40402) | ||||||
Agrovoc terms: | forestry, genetics | ||||||
Keywords: | breeding strategy, finite locus model, multiple population, subline, nucleus, inbred-hybrid, genetic gain, forestry | ||||||
URN:NBN: | urn:nbn:se:slu:epsilon-e-3915 | ||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3915 | ||||||
Additional ID: |
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ID Code: | 14007 | ||||||
Faculty: | S - Faculty of Forest Sciences | ||||||
Department: | (S) > Dept. of Forest Genetics and Plant Physiology | ||||||
Deposited By: | SLUpub Connector | ||||||
Deposited On: | 31 Jan 2017 09:37 | ||||||
Metadata Last Modified: | 09 Sep 2020 14:17 |
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