Inheritance and Gains of Three Wood Properties in Virginia Pine

Wood cores were obtained from a six-year-old openpollinated Virginia pine heritability test. A total of 738 trees, representing 123 half-sib families from 12 seed sources were sampled to determine wood specific gravity, extractives and diameter growth. The heritability of diameter growth was .267 while there was no evidence of significant genetic effects on extractive content in juvenile wood. Significant gains in wood production may be obtained using seed source selection for specific gravity and within-family selection for diameter growth; even greater gains may be achieved by among and within-family selection for diameter. Additional keywords: Specific gravity, extractives

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Author(s): George Rink, Eyvind Thorbjorsen

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1973

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