Twenty-two cultivars of potatoes (Solanum tuberosum L. and Solanum phureja) were grown in precise mid-scale field experiments and harvested from August to October 2014 at Valecˇov, Czech Republic (4938049.600N 1529048.900E). After the harvest, potatoes were mechanically cleaned, washed and inspected for mechanical, physiological damage or diseases. Standard practices in the growing technology were used. The detailed information about potato cultivars, maturity, skin and flesh colours, and tuber shape can be found in Table 1.