Relationship among single individuals of B. napus based on Nei and Li genetic distances and UPGMA. For comparison individuals from three commercial varieties of B. rapa were also included. Nei and Li  genetic distances and UPGMA method implemented in Treecon ver. 1.b software  were used. For this analysis each SSR allele was coded as a single locus with two states, 0 (absent) or 1 (present) . The consistency of each node was assayed by bootstrapping (i.e. resampling with replacement) with 1000 replicates using Treecon ver. 1.3b software . Only bootstrap values (%) over 50 are reported in the figure.