Fig. 4: Similarity of A. duranensis from different locations to the A subgenome of Tifrunner.

Genomic DNAs of 55 accessions, representing all known major populations of A. duranensis, were compared to the A subgenome of Tifrunner. Similarity is strongly influenced by hydrographic basins. Accessions with the highest similarity (in red) are concentrated around Rio Seco, a tributary of the Rio San Francisco; next in similarity (in orange) are accessions concentrated around Jujuy, a region that drains into the Rio San Francisco and the Lerma valleys; followed by accessions from the Rio Juramento (in light brown), a region that receives water from the Lerma valley. Following these in similarity are accessions from the endorreic basins that occasionally drain in the Bermejo River (northwest Argentina and south Bolivia) (in yellow) followed by accessions in the basins of the Rio Pilcomayo (in light green) and finally accessions from the Rio Parapetí basin, Izozog Swamps and West Paraguay sand dunes (in dark green). Outliers to this general pattern are likely to represent populations that have resulted from the occasional human movement of seeds among basins (most of these movements are likely to have occurred long ago). The maps were generated using Natural Earth.