| simultaneous determination of salicylic acid, jasmonic acid, methyl salicylate, and methyl jasmonate from ulmus pumila leaves by gc-ms. | salicylic acid, jasmonic acid, methyl salicylate, and methyl jasmonate are important phytohormones and defensive signaling compounds, so it is of great importance to determine their levels rapidly and accurately. the study uses ulmus pumila leaves infected by tetraneura akinire sasaki at different stages as materials; after extraction with 80% methanol and ethyl acetate and purification with primary secondary amine (psa) and graphitized carbon blacks (gcb), the contents of signal compounds salic ... | 2015 | 26457083 |