Figure 2.—

A haplotype network based on nucleotide polymorphisms of the Pi-ta coding region of 226 accessions of seven AA genome Oryza species: O. sativa, O. rufipogon, O. nivara, O. meridionallis, O. glaberrima, O. barthii, and O. glumaepatula. Each group of haplotypes is shown as a solid circle, and seven major haplotypes are marked in larger circles. The Pi-ta variants are in parentheses. Each branch represents a single mutational step. Branches with small solid circles indicate that there is more than a single mutational step between haplotypes. A number next to a branch represents the length of the mutational steps. Different sizes of circles represent the different numbers of each haplotype.