Abstract Potato Cyst Nematodes (PCN) are a globally important and economically extremely damaging potato pest. Chemical control has limited impact cannot clear field of PCN, but genetic resistance in potatoes is an effective part natural management PCN. There two closely related species PCN; Globodera rostochiensis against which the H1 gene from S. tuberosum ssp. andigena (CPC 1673) proven Euro...