1. Department of Plant Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
2. International Potato Center, Lima 15023, Peru
3. United States Department of Agriculture - Agricultural Research Service (USDA ARS) Small Grains and Potato Germplasm Research, Aberdeen, ID 1691S 2700W
4. Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, NB E3B 4Z7, Canada