Effect of Jasmonic Acid on the Content of Medicinally Active Substances in Rosemary Leaves Grown in Contaminated Soils

. Two separate factorial experiments were carried out in the greenhouse to study the effect of different concentrations of Jasmonic acid (0, 1, 2, and 3) mg. L-1, and adding different levels of lead and cadmium as toxic heavy metals to the culture medium (0, 5, and 10) g. kg-1 of soil from the weight of the pot and the interaction between them in the content of medicinally active substances in rosemary leaves using a completely randomized design C.R.D. with three replications. The results showed the superiority of the combination that the concentrations of 2 and 3 mg. L-1 of Jasmonic acid interfered with levels 5 and 10 g. kg-1 of soil induced a significant increase in the studied active compounds (rosmarinic acid, carnosic acid, carnosol acid and norgingin) in soils contaminated with lead and cadmium separately com-pared with the control treatment.