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Table V

Intertrait subrace, genetic and phenotypic correlations (and standard errors) between selection traits and objective traits.

Selection trait

Objective trait Correlation DBH4 Pilodyn penetration Sample gross
(15 y) (4 y) penetration shrinkage
(5½ y) (15 y)
Whole-tree volume under bark Subrace 0.39 (0.32)ns 0.72 (0.25)* 0.28 (0.34)ns
Genetic 0.78 (0.12)*** 0.31 (0.26)ns –0.24 (0.39)ns
Phenotypic 0.53 (0.05)*** 0.23 (0.08)** 0.08 (0.06)ns

Survival Subrace 0.78 (0.22)** 0.36 (0.33)ns 0.10 (0.35)ns
Genetic 0.82 (0.04)*** 0.29 (0.12)* –0.35 (0.31)ns
Phenotypic 0.50 (0.01)*** 0.06 (0.03)ns

Whole-tree basic density Subrace 0.13 (0.35)ns –0.83 (0.20)** –0.61 (0.28)ns
Genetic –0.06 (0.21)ns –0.91 (0.15)*** –0.78 (0.30)*
Phenotypic 0.03 (0.08)ns –0.61 (0.08)*** –0.46 (0.07)***

Janka hardness Subrace –0.11 (0.35)ns –0.75 (0.23)* –0.77 (0.22)**
Genetic 0.26 (0.22)ns –0.58 (0.23)* –0.73 (0.33)*
Phenotypic 0.00 (0.07)ns –0.43 (0.08)*** –0.37 (0.06)***

Internal checking Subrace –0.46 (0.31)ns 0.23 (0.34)ns 0.33 (0.33)ns
– Quartersawn Genetic NA NA NA
Phenotypic –0.08 (0.08)ns 0.09 (0.09)ns 0.10 (0.08)ns

Internal checking Subrace NA NA NA
– Backsawn Genetic –0.02 (0.21)ns 0.15 (0.24)ns 0.51 (0.30)ns
Phenotypic –0.01 (0.06)ns 0.01 (0.08)ns 0.22 (0.06)***

NA Correlations were not calculated if one or more of the traits being compared did not reveal significant differences among genotypes at the P = 0.200level.

ns

Not significantly different from zero,

*

P < 0.05,

**

P < 0.01,

***

P < 0.001.