PLANT CELL BIOTECHNOLOGY AND MOLECULAR BIOLOGY

The experiment was conducted in the winter season 2020-21 in the lath house belonging to the College of Agriculture / University of Basra. The study targeted the effect of spraying with salicylic acid (SA) at a concentration of (0, 70, 140 mg.L^-1) and Moringa leaf extract at a concentration of (0, 10, 20) g L^-1 in the vegetative and flowering growth of Antirrhinum majus L. The results showed that spraying with salicylic acid at a concentration of 140 mg L^-1 and Moringa leaf extract, at a concentration of 20 g L^-1 was significantly excelled in most of the studied traits and included (plant height, stem diameter, number of leaves, leaf area, fresh and dry weights of vegetative growth, number of florets, length of inflorescences and flowering period. The fresh and dry weights of the florets, the number of roots, and the soft and dry weights of the root system compared to the control plants. The effect of the interaction between the two factors was significant in most of the studied traits. (plant height 29.83 cm, stem diameter 3.29 mm , number of leaves 122.33 leaves.plant^-1, leaf area 21.94 cm², fresh and dry weights of vegetative growth (21.53, 3.70 g), number of florets 12.97 florets, length of inflorescences 10.17 cm and flowering period 31.67 day, The fresh and dry weights of the florets (4.41,0.72 g), the number of roots 49..67 root.plant^-1, and the fresh and dry weights of the root system(2.15,0.78 g) compared to the control plants.