Effect of Arginine and GA3 on Some Qualitative Traits and Active Ingredients of Matricaria chomomilla L.

The experiment was carried out in the one fields of Saba Abcar area - north of Baghdad duringwinter season of 2022-2023 to study the effect of arginine and gibberellin acid on the somequalitative traits and active ingredients of chamomile plant. The experiment was designedaccording to randomized complete block design at three replications, the first factor includedthe spraying of three concentrations of arginine (0, 50 and 150 mg L-1), whereas the secondfactor included the spraying of three concentrations of GA3 (0, 100 and 200 mg L-1). The resultsshowed that the spraying of arginine at a 50 mg L-1 was significantly superiority in thechlorophyll index (26.63 SPAD), carbohydrates percentage (50.38%) and volatile oil yield(13.84 Kg ha-1), while the spraying of arginine at a 150 mg L-1 was significantly superiority inthe protein percentage (10.18%). Also, the results revealed that the spraying of GA3 at 100 mgL-1 was significantly superiority in the chlorophyll index (24.90 SPAD), carbohydratespercentage (50.79%) and volatile oil yield (16.30 Kg ha-1), whereas the spraying of arginine ata 200 mg L-1 was significantly superiority in the protein percentage (9.83%). The interactionbetween studied factors had significant effect on the all studied traits. Further, the results ofHPLC analysis showed a difference in the percentages of the active ingredients of chamomilevolatile oil.