Figure 4.

Phenotypic Variation in Grain Size and Shape in Ancestral Wheat Species.

Representative grains are shown for 22 species and subspecies of the genus Triticum. Species are organized according to the ploidy level from diploids to hexaploids. The genome of each species is given in parentheses. T. sinskajae is a mutant free-threshing form of T. monococcum (Goncharov et al., 2007), T. militinae represents a free-threshing mutant form of T. timopheevii (Feldman, 2001), and T. vavilovii (BBA^uA^uDD) and T. zhukovskyi (BBAAA^mA^m) are hexaploid hulled wheats. Bar = 3 mm.

[See online article for color version of this figure.]