Summary of the genetic polymorphism indexes of sorghum individuals sampled in each ethnic group.

Ni: number of samples, Nhh: number of households, NAl.: Mean number of observed alleles over the 18 loci, RAl.: unbiased allelic richness corrected for sample size, He: unbiased gene diversity, Ho: observed heterozygosity, FIS: fixation index. The letters (a, b) next to the RAl, He and FIS values indicate the statistical significance of their differences between ethnic groups (Wilcoxon test) at a 5% level after correction for multiple testing (FDR). For a given index, ethnic groups with the same letter did not present significant differences.