Genetic correlations between pulpwood and solid-wood selection and objective traits in Eucalyptus globulus

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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.