Fig. 2

Overview and classification of SNP sites. A SNP sites were classified as fixed or not-fixed if their allele frequencies were 1 or <1, respectively. At each line, the fraction of variants shared (in FZTDU) and not shared (not in FZTDU) with FZTDU is also shown. B Blue horizontal bars: Total number of SNP sites detected in each line. Brown vertical bars: Number of private SNP sites for each line (single black dots), shared only by the trait-selected lines (five black dots) and by all lines (six black dots)