Figure 1.

The physiological indexes of sugar beet O68 seedlings under different durations of salt treatments. (a) relative water content (b) chlorophyll content (c) root activity (d) MDA content (e) POD activity (f) CAT activity (g) SOD activity. The gray bars represent leaves and the white bars represent roots. The significance of leaves is marked with lowercase letters and that of roots is marked with uppercase letters. Triplicate biological replicates were performed. Different letters indicate significant differences according to Student−Newman−Keuls (p < 0.05).