*2.2. Chilling Injury*

The chilling injury symptom was evaluated on the level of surface pitting in accordance with the methods described by Wang et al. [25]. CI was measured according to a scale of 6 levels; 0, no pitting; 1, trace (0% < injury ≤ 10%); 2, slight (10% < injury ≤ 20%); 3, regular (20% < injury ≤ 30%); 4, moderate (30% < injury ≤ 50%); 5, severe (injury ≥ 50%). CI index and CI incidence were determined by the following formula: CI index = (sum (CI scale × number of fruit at the CI scale))/total number of evaluated fruit; CI incidence (%) = (the number of CI fruit/the total number of evaluated fruits) × 100.
