Fig. 1.

Recombination bin map of 246 RILs. (A) Genetic constituents of 246 soybean RILs. Chromosomes are separated by vertical lines. Red and green represent Magellan and PI 438489B genotype, respectively. (B) An enlarged bin map showing part of chromosome 10, ranging from 3.8 Mb to 4.6 Mb, in 20 RILs. The white vertical line shows recombination interval (RI), which was defined as the transition region between two haplotype blocks in at least one of the 246 RILs. In RI 35, recombination took place in RIL 2, 8, 9, 10, 18, and 19. In RI 38, recombination occurred only in RIL16. The widths of these lines were based on the sizes of RIs. The chromosome fragment between two adjacent RIs was defined as a bin, which was used as a molecular marker.