Figure 2.

Effects of exogenous selenium on cold stress of cucumber seedlings. (A) The phenotype of control, selenium application, cold stress, and selenium application under cold stress. (B) Shoot weight of control, selenium application, cold stress, and selenium application under cold stress. (C) Leaf area of control, selenium application, cold stress, and selenium application under cold stress. (D) SPAD value of control, selenium application, cold stress, and selenium application under cold stress with 5 and 10 days treatments, respectively. (E) Net photosynthetic rate of control, selenium application, cold stress, and selenium application under cold stress with 5 and 10 days treatments, respectively. Values are expressed as means of three replicates ± SD, and different letters are significantly different (P < 0.05).