Figure 3

Plastid DNA variation in the Mediterranean olive trees. A. Distribution of the cpDNA haplotypes in cultivated olive trees (see also Additional file 5 for the list of cultivars and the corresponding cpDNA haplotype). B. Distribution of haplotypes in the five studied oleaster populations. For both cultivated and wild gene pools, the number of accessions (n) and the discriminating power (D, D _total ) of cpDNA variation is given for each region or population and on the global sample. C. Reduced-median network [54] of cpDNA haplotypes. The traits on branches represent each individual change. Indels are specifically distinguished by bigger orange traits. Each haplotype is represented by a symbol with a definite colour. The name of each cpDNA clade or lineage is given according to Besnard et al. [15] (see also Figure 2). The missing, intermediate nodes are indicated by small black points. CAPS-XapI and CAPS-EcoRI were not considered in this analysis. For this reason, three pairs of haplotypes (i.e., E1-1/E1-4, E1-2/E1-5 and E2-1/E2-4) are not distinguished in the network. In addition, the nine haplotypes not restricted with XapI are indicated with a red circle. * haplotypes for which a complete genome was released in the present study.