Research Article

Simultaneous Determination of Salicylic Acid, Jasmonic Acid, Methyl Salicylate, and Methyl Jasmonate from Ulmus pumila Leaves by GC-MS

Figure 5

Changes in concentrations of methyl salicylate (a) and methyl jasmonate (b) in U. pumila leaves infected by Tetraneura akinire Sasaki. and represent significant difference compared with control at and level, respectively.
(a)
(b)