Prunus avium L. Effect of storage for 2 y of nonstratified (nS) and stratified (S) seeds (A), at − 3 °C or − 196 °C (B), on germination and seedling emergence. Values are means of results obtained after 1 or 2 y of storage. Two separate ANOVAs and four Tukey tests, the values marked with the same letter (small letters – germination, capital letters – emergence) are not significantly different at P < 0.05, provenance Zwierzyniec (Roztocze, SE Poland).