Potatoes are a major horticulture crop for which genetic engineering approaches have been successfully used abroad. They also have a number of problems that are difficult or impossible to solve through conventional breeding. This project was undertaken to: develop gene transfer systems for cultivars commonly used as parents in the fresh market component of the National Potato Improvement and Evaluation Scheme, transfer genes that could provide resistance to potato leaf roll virus (PLRV), and challenging the resulting plants for their response to PLRV.