Origin (Ori) of the 94 genotypes, Belgium (BE), Canada (CA), Germany (DE), China (CH), Denmark (DK), France (FR), England (UK), Hungary (HU), Italy (IT), Luxembourg (LUX), Netherlands (NL), Poland (PO), Ukraine (UKR), Sweden (SE), USA (US), Bulgaria (BU).

Year refers to the first year in official trials. Empty cells: year unknown. ID refers to ID in PCA-plot (Figure 4). NG refers to no genotype data.
*Breeders varieties and lines have not been assigned accession number. Seeds are available from breeders on request. Some varieties were obtained from IPK gene bank (Gene bank Information System of the IPK Gatersleben) and accession-ID is given in brackets.
ASpring variety.