THE ROLE OF PLANT GROWTH REGULATORS IN THE INDUCTION OF CALLUS TREATED WITH HARMEL SEEDS EXTRACT AND THE REGENERATION AND ROOTING OF VEGETATIVE GROWTHS OF BARLEY VARIETIES IN VITRO: THE ROLE OF PLANT GROWTH REGULATORS IN THE INDUCTION OF CALLUS TREATED WITH HARMEL SEEDS EXTRACT AND THE REGENERATION AND ROOTING OF VEGETATIVE GROWTHS OF BARLEY VARIETIES IN VITRO. (2026). Iraqi Journal of Market Research and Consumer Protection, 18(1), 275-290. https://www.jmracpc.uobaghdad.edu.iq/index.php/IJMRCP/article/view/586