Numbers of SNP that showed polymorphism within groups of four genotypes derived from four commercial breeding programs. Numbers in the Venn diagram are based on 160,901 SNP polymorphic within 16 elite cultivated genotypes from four commercial breeding programs. FGI = Forage Genetics International; C/W = Cal/West Seeds; Pioneer = Pioneer Hi-bred, Inc.; DL = Dairyland, Inc.
Li et al. BMC Genomics 2012 13:568 doi:10.1186/1471-2164-13-568