Fig. 4From: Thymol improves salinity tolerance of tobacco by increasing the sodium ion efflux and enhancing the content of nitric oxide and glutathioneEffect of thymol on NO and antioxidant system in tobacco seedlings under salt stress. DAF-FM DA fluorescence indicates total NO level (a). (b) GSH content. Different lowercase letters in b, indicated that the mean values of three replicates were significantly different between the treatments (P < 0.05, ANOVA, LSD)Back to article page