Fig 1. Studied species and their role in the evolutionary history of bread wheat.

The figure is based on information described in Zohary et al. [36], Kilian et al. [44], Chantret et al. [45] and Peng et al. [46]. Genome type and ploidy level are given in brackets, LIGHT GREY = wild species, GREY = domesticated wheat. Dashed lines show the most accepted model of the origin of hexaploid wheat where the ancestral species are tetraploid emmer wheat (Triticum turgidum ssp. dicoccon) and Aegilops tauschii. A more recent model is described in Dvorak et al. [43].