We are generating ultra-high density genetic maps through genotyping by low coverage, shotgun sequencing of the progenitors of the cultivated peanut, A.duranensis and A.ipaensis.These maps are being generated through sequencing the gene space of diploid and tetraploid mapping populations (～1x coverage each RIL) and of peanut diversity panels.RIL mapping populations of the diploid wild progenitor species of both the peanut progenitor A and B genomes are being analyzed as well as a tetraploid mapping population that is derived from a cross of cultivated peanut with a synthetic amphidiploid of the two progenitor species.