Figure 8.

Interactive effects of MT and SNP on the reactive oxygen species (ROS) accumulation and EL in cucumber seedlings under cold stress. (A) Seedling phenotype; (B) Inverted microscope imaging of H₂O₂ and O₂⁻; (C) H₂O₂ content; (D) O₂⁻ content; and (E) EL. Three-leaf stage seedlings were foliar sprayed with 100 μM MT, 75 μM SNP, 100 μM cPTIO+100 μM MT, 50 μM p-chlorophenylalanine (p-CPA) +75 μM SNP, or deionized water (control) for 24 h and then were exposed to 5°C for 48 h. Data are represented as mean ± SD (n = 3). Different letters indicate a significant difference between samples according to Duncan's new multiple range test (p < 0.05).