Fig. 7From: Biomass traits and candidate genes for bioenergy revealed through association genetics in coppiced European Populus nigra (L.)Genetic distance matrix (pairwise FST) between 20 subpopulations of P. nigra association population. FST values are shaded according to magnitude (white to dark grey) with Italian subpopulations in purple; French in orange; Spanish in red; German in blue and Netherlands in green Back to article page