Figure 2. Median joining network for chloroplast DNA trnH-psbA intergenic spacer haplotypes of Theobroma cacao trees from Soconusco, Mexico, and the outgroup haplotype (Theobroma bicolor).

The map indicates the geographic distribution of the haplotypes. The colored portions represent the proportions of the same haplotype occurring in each sampling locality. Trees employed as the references (Pop 6 and Pop 7) are shown outside the map. The population code and details are shown in Table 1.