Fig. 3

Diversity analysis of the assembled barley core set. The barley core set of 200 accessions was mathematically selected from all 562 accessions using the R package ‘corehunter’. a The selected barley core set captured 499 microsatellite alleles accounting for 96.7% of the alleles harbored in the 562 accessions, which is significantly more than the 200 random accessions. b Gene diversity of the core set averaged across the SSR primers. It is significantly higher than the raw 562 accessions and 200 random accessions, which is probably due to the high allele maintenance and balanced allelic frequency in the core set. c Comparison of the Nei1972 distance for accession pairs between the barley core set and raw set; d The alleles captured by accession per se (left panel), gene diversity per SSR (middle panel) and minor allele frequency (MAF) of the alleles (right panel) for each subpopulation and whole population in the core (200 accessions) and raw (562 accessions) sets