Figure 1

Trimodal distribution of peach MD trait in the WxBy (left) and CxA (right) populations. Arrows indicate the position of values detected for the four parents and the two F₁s. For each cross, we refer to the F₂ individuals falling in class “a”, h” and “b” as early, intermediate and late ripening, respectively. Each peak of the distribution was considered to represent a genotype for a co-dominant marker in these populations.