Genome-wide restriction fragment length polymorphism (RFLP) patterns at 179 loci. RFLP patterns are aligned with the physical order of the chromosomes. Red indicates ‘Kasalath’-type polymorphisms; white indicates ‘Nipponbare’-type polymorphisms. Only landraces with the indicated genotypes are shown. Data were obtained from and arranged on the basis of Supplementary Figure 4 in Shomura et al. .