Figure 4

The effect of seed treatment with cold plasma and nano-salicylic acid and foliar spraying of nano-salicylic acid on phenylalanine ammonia-lyase (A), tyrosine ammonia-lyase (B), and leaf and root total phenol (C, D) of S. leriifolia plant. Values represent mean ± S.E. Different letters indicate significant differences at the 1% level according to the LSD test.