Key message A new approach is proposed for the use of the genetic markers to manage DUS trials, targeted at individual phenotypic characteristics using genomic prediction, as well for supporting Distinctness decisions. Abstract High-performing crop varieties underpin food security. Due to the cost of developing varieties, systems have been established to provide breeders with legal protection for their varieties. In many count...

Key message Multiple QTLs control unreduced pollen production in potato. Two major-effect QTLs co-locate with mutant alleles of genes with homology to AtJAS, a known regulator of meiotic spindle orientation. Abstract In diploid potato the production of unreduced gametes with a diploid (2 n ) rather than a haploid ( n ) number of chromosomes has been widely reported. Besides their evolutionary important role in sexual polyploid...