Fig. 1

Effects of CsBPC2 knockout on the phenotype and chilling injury index of cucumber seedlings under cold stress. A Phenotype of untreated cucumber plants. B-C Phenotype of cucumber plants treated at 4 °C for 6 h. D Chilling injury index of cucumber seedlings treated at 4 °C for 6 h. WT: wild-type cucumber seedlings; L2: cucumber Csbpc2 mutant line L2; L3: cucumber Csbpc2 mutant line L3. The different letters indicate significant differences as indicated by Tukey’s test (p < 0.05)