Fig. 4From: Effects of silicon application on leaf structure and physiological characteristics of Glycyrrhiza uralensis Fisch. and Glycyrrhiza inflata Bat. under salt treatmentEffects of Si and NaCl treatment on xylem area (a), phloem area (b), parenchyma area (c), vascular bundle area (d), main vein thickness (e), and epidermal thickness (f) of two varieties of licorice. Results are mean for four replicates with different letters indicating differences at P < 0.05 by Duncan’s multiple comparison testsBack to article page