Pedigree diagram of ‘Chandler’ and other walnut cultivars released by the UC Davis walnut breeding program. The values in parentheses after cultivar names represent coefficients of parentage (COP) of a cultivar with ‘Chandler’. If COP is 0, the variety has no lineage relationship with ‘Chandler’. The pairwise COPs were calculated based on the definitions in  and . The cultivars in bold font are parents or ancestors of ‘Chandler’. The percentages of heterozygous loci are in square brackets behind some cultivars.
You et al. BMC Genomics 2012 13:354 doi:10.1186/1471-2164-13-354