Figure 2.

Four subgroups inferred from STRUCTURE analysis. The vertical coordinate of each subgroup means the membership coefficients for each accessions; the digits of the horizontal coordinate represent the accessions corresponding to Table S5; Red zone: G1, Green zone: G2, Blue zone: G3, and Yellow zone: G4; The colored samples upon the figure indicate the geographic distribution information of accessions. ◆ (orange) accessions from North America, ● (brown) accessions from Asia, ■ (purple) accessions from Europe, ■ (yellow) accessions from Africa, ▲ (blue) accessions from South America, and ▼ (pink) accessions from Oceania; The simples below the figure indicate the rust trait information of accessions. ■ (black) accessions with resistant (HR and R) traits, and ■ (grey) accessions with susceptible traits (HS and S).