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Bread wheat(Triticum aestivum),one of the most widely cultivated and consumed food crops in the world,is a hexaploid containing A,B and D genomes.Due to its complex polyploidy nature and large genome size(17 Gb),the genetic and functional analysis of bread wheat is extremely challenging.Triticum urartu is the progenitor of wheat A genome.It plays a central role in wheat evolution,domestication and genetic improvement because the A genome is the basic genome of bread wheat and other polyploidy wheats.We sequenced T.urartu accession G1812 using a whole-genome shotgun strategy on the Illumina HiSeq2000 platform,and generated a draft genome of wheat A genome(Ling et al.,2013,Nature 496: 87-90).To completely sequence the wheat A genome,we constructed 3 BAC libraries and created BAC contigs using the whole genome profiling technology.Based on BAC contig data,we selected 47,223 BACs by MTP approach,and sequenced them.Additionally,we also generated >90 G sequence data by whole genome sequencing using PacBio RS Ⅱ,and 107 G 2 x 250 bp WGS sequence data by HiSeq2500.The sequence assembly and genome annotation have been finished.The assembled sequences were assigned on their corresponding chromosome with a high resolution SNP map.In conclusion,completing the genome sequence of T.urartu will provide a diploid reference for the analysis of polyploidy wheat genomes,and is a valuable resource for the genetic improvement of wheat to meet the future challenges of global food security and sustainable agriculture.