2. Material and methods
2.1. Plant material
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.