Fig. 3 Segregation of yield (a) and seed weight (b) QTLs linked to Satt561 and Satt507 in Minnesota in 1997— sub-populations corresponding to the two alleles at each locus or to each of the four alleles of the pair of interacting loci. For each panel (1–4) the plants in each allelic sub-population are ranked along the y-axis according to increasing yield or seed weight values (x-axis). Panels 1 and 4 show the allelic sub-populations of the Satt561 or Satt507 loci, respectively. An open triangle represents the population with the Minsoy allele and a closed triangle represents the population with the Archer allele. Panels 2 and 3 show the four allelic sub-populations corresponding to segregants at the two loci: (•) Archer allele of Satt507 and Minsoy allele of Satt561; (
) = Archer allele of both; (
) = Minsoy allele of both; (
) = Minsoy allele of Satt507 and Archer allele of Satt561
