@article{McNally.2009.19597147, author = {McNally, KL and Childs, KL and Bohnert, R and Davidson, RM and Zhao, K and Ulat, VJ and Zeller, G and Clark, RM and Hoen, DR and Bureau, TE and Stokowski, R and Ballinger, DG and Frazer, KA and Cox, DR and Padhukasahasram, B and Bustamante, CD and Weigel, D and Mackill, DJ and Bruskiewich, RM and Rätsch, G and Buell, CR and Leung, H and Leach, JE}, title = {{Genomewide SNP variation reveals relationships among landraces and modern varieties of rice}}, journal = {Proceedings of the National Academy of Sciences of the United States of America}, volume = {106}, number = {30}, pages = {12273-8}, year = {2009}, url = {http://www.ncbi.nlm.nih.gov/pubmed/19597147}, abstract = {{Rice, the primary source of dietary calories for half of humanity, is the first crop plant for which a high-quality reference genome sequence from a single variety was produced. We used resequencing microarrays to interrogate 100 Mb of the unique fraction of the reference genome for 20 diverse varieties and landraces that capture the impressive genotypic and phenotypic diversity of domesticated rice. Here, we report the distribution of 160,000 nonredundant SNPs. Introgression patterns of shared SNPs revealed the breeding history and relationships among the 20 varieties; some introgressed regions are associated with agronomic traits that mark major milestones in rice improvement. These comprehensive SNP data provide a foundation for deep exploration of rice diversity and gene-trait relationships and their use for future rice improvement.}} }