Fig 2. Geographical representation of the 158 maize landraces from the South-West of France (36 landraces having no geographical coordinates were not plotted).

The districts of collection sites are represented with administrative numbers. Landraces for which pie-diagrams had both blue and cyan colors exhibited mixed genetic origins between E-SWF and W-SWF groups. The map was created using R software (libraries maps, plotrix, mapproj, devEMF).