Analyses of variance (using the model Trait = Tree replicated in Harvests) confirmed the absence of significant differences of these two traits between individual trees, whereas there were highly significant differences (P<0.001) between the two harvests (not shown).
Separate analyses of variance in general linear models revealed significant dependence of the yield on the individual tree (replicated in 2 harvests; P<0.001, harvest-related changes were marginally significant at P<0.05), the individual genotype group (trees representing replicates; P<0.01) and the individual farm (with a farm’s trees as replicates; P<0.001).