The present invention relates to a new plant breeding process. The processimproves the agronomic performance of crop plants by using genetic materialthat is also used in classical breeding. Instead of sexually recombiningentire genomes at random, as is done in classical breeding, specific geneticelements are rearranged in vitro and inserted back into individual plantcells. Plants obtained through this new plant breeding process do not containforeign nucleic acid but only contain nucleic acid from the plant speciesselected for transformation or plants that are sexually compatible with theselected plant species. Plants developed through this new plant breedingprocess are provided. In particular, potato plants displaying improved tuberstorage and health characteristics are provided.