Figure S2. The joint number distribution of allele frequencies in japonica and indica. (a). The joint number of indica and temperate japonica based on their allele frequencies. (b). The joint number of indica and tropical japonica based on their allele frequencies. (c). The frequency of site of indica and temperate japonica for introgression event. (d) . The frequency of site of indica and tropical japonica for introgression event. Here, we marked the site (yellow) of frequency bigger than 95% or small than 5%. (PDF 483 kb)