Figure 3

Three-dimensional models of principal component analyses (PCA) of the 19 wheat accessions, representing three wild and domesticated tetraploid wheat subspecies at various stages of domestication: wild emmer wheat (WEW; T. turgidum ssp. dicoccoides), domesticated emmer wheat (DEW; T. turgidum ssp. dicoccum), durum landraces (LD; T. turgidum ssp. durum), and modern durum (MD; T. turgidum ssp. durum; see Table 1 for details of each accession). Each sphere represents the quantile-normalized metabolome of one replicate accession; well-separated groups are indicated with dashed lines. (A) Two views of the PCA of the embryo metabolomes. (B) Two views of the PCA of the endosperm metabolomes.