Fig. 1From: Physical mapping and InDel marker development for the restorer gene Rf2 in cytoplasmic male sterile CMS-D8 cottonSNP-index algorithm to map the Rf2 gene. The coloured point represents the calculated SNP-index (or ΔSNP-index) value. The top graph illustrates the distribution of the SNP-index values in the F mixed pool; the middle graph shows the distribution of the SNP-index values in the S mixed pool; the bottom graph shows the distribution of the ΔSNP-index values, and the grey line represents the theoretical threshold lineBack to article page