Rapid assessment of wood traits for large-scale breeding selection in Picea mariana [Mill.] B.S.P.

Table 5 Phenotypic correlations (above the diagonal) and genetic correlations (below the diagonal) among growth and wood traits of trees from progeny trials in the mixed forest

Group of traits		Growth				Wood density			Intra-ring density		Modulus of elasticity
	Variable	TH	DBH	DBH/TH	RW _res	WD _vol	WD _pil	WD _res	EWD _res	LWD _res	V _fak	MoE _fak+pil
Growth	TH		0.59	−0.15	0.18	−0.21	0.19	−0.17	−0.18	−0.11	0.12	0.02
	DBH	0.69		0.70	0.45	−0.31	0.33	−0.16	−0.15	−0.10	−0.20	−0.32
	DBH/TH	−0.18	0.59		0.39	−0.20	0.24	−0.04	−0.03	−0.03	−0.35	−0.41
	RW _res	0.36	0.93	0.83		−0.26	0.11	0.03	−0.01	0.08	−0.26	−0.27
Wood density	WD _vol	−0.40	−0.52	−0.23	−0.40		−0.41	0.38	0.36	0.37	0.14	0.30
	WD _pil	0.36	0.41	0.13	0.51	−0.88		−0.49	−0.44	−0.47	−0.02	−0.46
	WD _res	−0.39	−0.36	−0.03	−0.55	0.96	−0.95		0.95	0.93	−0.15	0.09
Intra-ring density	EWD _res	−0.44	−0.37	0.02	−0.65	0.92	−0.94	1.00		0.91	−0.18	0.05
Intra-ring density	LWD _res	−0.30	−0.39	−0.15	−0.50	0.90	−0.94	1.00	0.99		−0.14	0.09
Modulus of elasticity	V _fak	0.29	0.10	−0.18	0.04	−0.10	0.32	−0.36	−0.44	−0.24		0.89
Modulus of elasticity	MoE _fak+pil	0.19	−0.03	−0.24	−0.12	0.19	0.03	−0.07	−0.16	0.07	0.96

TH total height, DBH diameter at breast height, DBH/TH diameter-to-height ratio, RW _res Resistograph® ring width, WD _vol volumetric wood density, WD _pil Pilodyn wood density, WD _res Resistograph® wood density, EWD _res Res. earlywood density, LWD _res Res. latewood density, V _fak Fakopp acoustic velocity, MoE _fak+pil Fakopp and Pilodyn-derived modulus of elasticity.

ISSN: 1297-966X