Fig. 3From: Genetic improvement of wood density and radial growth in Larix kaempferi: results from a diallel mating testAge trends in the heritability of overall wood density (AWD) and basal area (BA), genetic correlations between AWD and BA (a), and ratios of the variance components of AWD and BA (b). The X-axis indicates the stand age. The vertical bars shown in (a) are the same as those in Fig. 2 Back to article page