Figure 2.

The effect of salt and Si treatment on predawn LWP in alfalfa leaves. Four weeks-old alfalfa seedlings were exposed to 0, 50, 100, and 200 mM NaCl with (+2 mM Si) or without (−2 mM Si) Silicon for 14 d. Leaves were measured 14 d after conducting salt and Si treatment to determine predawn LWP. Bars indicate standard deviation (SD) of the means (n = 4). Different letters denote significant differences among the treatments based on Duncan’s multiple range test (P < 0.05). predawn LWP, predawn leaf water potential.