FIGURE 5.

Influence of various seed priming treatments on (A) free proline, (B) MDA content, and (C) H₂O₂ content of rice seedlings under chilling stress. Vertical bars above mean indicate standard error of six replicates. Mean value for each treatment with different lowercase letters indicate significant differences by the LSD-test (P < 0.05). NP + Cn: no priming and no stress, NP + CS: no priming and chilling stress, HP + CS: hydropriming and chilling stress, CaCl₂ + CS: calcium chloride priming and chilling stress, H₂O₂ + CS: hydrogen peroxide priming and chilling stress. Se + CS: selenium priming and chilling stress, and SA + CS: salicylic acid priming and chilling stress, Cn: 28°C, CS: 18°C, HHZ: inbred cultivar huanghuazhan, YLY6: hybrid variety Yangliangyou-6.