Fig. 2 Segregation of yield QTLs linked to Satt277 and B172_2 — sub-populations corresponding to the two alleles at each locus or to each of the four alleles of the pair of interacting loci. The average of three environments is shown in (a) as well as the values for each of the three individual environments in (b, c, and d). For each panel (1–4) the plants in each allelic sub-population are ranked along the y-axis according to increasing yield value (x-axis). Panels 1 and 4 show the two allelic sub-populations at the Satt277 or B172_2 loci respectively. An open triangle represents the sub-population with the Noir l allele and a closed triangle represents the sub-population with the Archer allele. Panels 2 and 3 show the four allelic sub-populations corresponding to segregants at both loci: (•) Archer allele of B172_2 and Noir allele of Satt277; (
) = Archer allele of both; (
) = Noir1 allele of both; (
) = Noir allele of B172_2 and Archer allele of Satt277
