NDLI: Genetic control of very early compression and opposite wood in Pinus radiata and its implications for selection

Content Provider	Springer Nature Link
Author	Apiolaza, Luis A. Chauhan, Shakti S. Walker, John C. F.
Copyright Year	2011
Abstract	The long time frame for evaluating selection candidates is a major barrier to the deployment of genetic gain from tree breeding programs. This situation is compounded in wood quality studies by constraints on the number of sampled individuals when trees are older and larger. This paper documents the degree of genetic control and genetic association for wood quality traits in 18-month-old leaning Pinus radiata seedlings. Trees were separately assessed for basic density, green and dry acoustic velocity, and longitudinal and volumetric shrinkage in opposite and compression wood. Heritability estimates were low to moderate for both compression and opposite wood (ranging from 0.15 to 0.38). Estimated genetic correlations were very high in opposite wood, where green velocity displayed the highest correlations with both longitudinal (−0.89) and volumetric (−0.64) shrinkage, closely followed by dry velocity. These correlations were substantially lower for compression wood. The estimated correlations between compression and opposite wood characteristics were high for most traits except for longitudinal shrinkage. We suggest how these results could be used for very early screening for wood stiffness and dimensional stability. We propose that information on early genetic control of wood quality and the methodologies used to elicit it should be integrated in breeding and deployment programs.
Starting Page	563
Ending Page	571
Page Count	9
File Format	PDF
ISSN	16142942
Journal	Tree Genetics & Genomes
Volume Number	7
Issue Number	3
e-ISSN	16142950
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-01-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Wood quality Early selection Compression wood Radiata pine Bayesian models Biotechnology Tree Biology Plant Breeding/Biotechnology Plant Genetics & Genomics Forestry
Content Type	Text
Resource Type	Article
Subject	Genetics Molecular Biology Horticulture Forestry

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