EFFECT OF CULTIVARS AND CONCENTRATIONS OF THE CHEMICAL MUTAGEN SODIUM AZIDE ON SOME GROWTH, YIELD AND QUALITY OF SORGHUM (SORGHUM BICOLOR L.)

A field experiment was carried out in Ramadi city, Al-Bofraj area, in an agricultural field belonging to one of the farmers, located on longitude 43.27 and latitude 33.47, to know the effect of different concentrations of the chemical mutagen sodium azide on some growth characteristics, yield and components of three varieties of sorghum. During the spring season 2022 and using the RCBD randomized complete block design with three replications. Where the main plots occupied the mutagen concentrations with the control treatment (0, 0.5, 1 and 1.5) Mm and took the symbols (M0, M1, M2 and M3) sequentially, while the split plots were placed in the secondary plots and included (Enqath, Buhuth-70 and Lilo) and have symbols (V1, V2 and V3) sequentially.The studied cultivars also variation with each other as a result of their genetic nature, as the cultivar Lilo recorded the lowest number of days for flowering by 50% as it was earlier than the of the cultivars by 42.33 days, while the cultivar Bohuth-70 outperformed the highest rates for the traits, plant height was 229.50 cm, number of grains per head is 2505 grain head, and the yield of the plant is 71.87 g. plant-1, and the harvest index is 23.62%. While in of protein content, the Lilo cultivar superior, recording highest rate of 13.50%. Results of indicated that the M3 concentration in the flowering date was 50% superior, as it was earlier in flowering and the number of days was less, which amounted to 39.78 days, while the concentration of 1 Mm was superior in all the studied traits and recorded the highest rates, as it reached 263.89 cm in the trait of plant height and 2579 head grains in the number of grains per head And 80.64 g of plants in the grain yield and 24.78% in the harvest index.