Effect of salicylic acid on flavonoids, apigenin, anthocyanin and carbohydrate in Matricaria chamomilla L

Salicylic acid is a common plant-produced phenolic compound and sited as a plant hormone. The work reported in this paper investigated the effects of different concentration of exogenous application of salicylic acid on flavonoids، anthocyanin، apigenin and carbohydrates in hydroponically- grown Matricaria chamomilla L. (german chamomile) during 4 days. Although 0. 125 mM salicylic acid applications produced prominent results، higher salicylic acid dose had a toxic effect. Indeed، salicylic acid treatments effectively promoted the production of a wide range of plant secondary metabolites. Generally، 0. 125 mM salicylic acid increased flavonoids، anthocyanin، apigenin and soluble sugars compared to the control. Salicylic acid was also shown to inhibit seed germination.