Table 3.
Results of analysis of variance (ANOVA) and narrow-sense heritability of the measured characteristics in third-generation progeny trial of Acacia mangium

Characteristic	Mean	SD	Significance among families	Variance of families	Variance of environment	Heritability
D (cm)	18.9	1.74	0.0002*	1.395	5.929	0.41
H (m)	19.1	2.03	0.0008*	1.641	8.328	0.37
P (mm)	17.3	0.79	0.0272*	0.197	1.839	0.25
SWV (m/s)	3,432	105	0.0144*	4,205	33,640	0.27

Note: D, stem diameter; H, tree height; P, Pilodyn penetration; SWV, stress-wave velocity; SD, standard deviation;
significance at the 5% level.