IMPACT OF ASCORBIC ACID ON THE CONCENTRATION OF CAROTENE AND PROLIN IN THE LEGUME (VICIA FABA) PLANTS GROWN WITH SOIL TREATED WITH PB AND NISuzan Othman Omar Mame and Hussein Saber Mohammed Ali Al-Rashedy
This research was conducted at the university of Mosul / college of education for pure science / biology department, to detect the effect of ascorbic acid on the legume plant (Vicia faba) grown in a soil polluted with deferent concentration of heavy elements. The results showed that spraying the vegetative parts of the plant with ascorbic acid at 600 mg/l concentration and for once leads to an increase in carotene concentration and a decrease in proline concentration in the tissues of the leaves of legume plant in comparison with the control treatment as they reached (0.198) mg/g. Fresh weight and (0.058)Î¼ / g fresh weight respectively. As it was noted that treatment of soil with element Ni at a concentration of 50 mg/kg soil leads to a decrease in the concentration of carotene in comparison to the control treatment as it reached (0.097) mg/g. Fresh weight, and an increase in proline when treated with element Pb at a concentration of 550 mg/kg soil as it reached (0.157) Î¼/g in comparison to with the control and other treatments.