 The authors present a new paradigm for creating high-density genetic maps of plants using complete and error-free datasets and genetic markers. They use 22,000 SNPs identified from barleyists and sequenced applicants to create an initial consensus map supported by three barley-doubled haploid mapping populations. The authors selected 3,072 of these tested SNPs based on technical performance, map location, minor allele frequency, MAF and biological interest to fill two production assays, BOPA-1 and BOPA-2. The final consensus map contains 2,943 SNP loci in 975 marker bins covering a genetic distance of 1099 cm. The authors found that low recombination is evident from bins containing many more than the average number of markers, meaning that a large number of genes are recombinationally locked into the genetic centromeric regions of several barley chromosomes. They also demonstrated the usefulness of BOPA-1 and BOPA-2 in detecting minor alleles in genetically-narrow material.