Wheat is a cereal grass that belongs to the Poaceae (Gramineae) family. It's one of the most important crops, for sure. During the winter of 2021, researchers conducted farmer's field experiment (Al-Batira area, 20 km away from the center of Maysan Governorate) in silty loam soil, to determine the impact of glutamine and proline spraying on yield and components of different soft wheat genotypes (Triticum aestivum L.). The split-plot, randomized, complete-block experiment was set up (R.C.B.D). Two variables were investigated in this experiment: the first factor included; (a control treatment sprayed only with distilled water; amino acid glutamine is sprayed with a concentration of 300 mg l-1; amino acid proline sprayed at a concentration of 300 mg l-1; a treatment in which the amino acids gluten and proline are combined, 150 mg l-1 each). The second factor includes ten newly introduced genotypes from soft wheat, which are as follows; (Russian, ACSAD 133, ADANE 99, ACSAD 59, ACSAD 901, Iranian, Wafiya, Jad (Germanian), Jihan, Bohouth22). The results showed: Wafiya cultivar's superiority, as evidenced by its higher average number of fertile spikes and grain yield, which counted to 398.96 spike-1 and 7.76 Mg ha-1, respectively, while cultivar Acsad-901 outperformed in the traits of; grains number per spike-1, biological yield and harvest index with averages of 82.90 grains of spike-1, 16.51 Mg ha-1 and 46.16%, respectively. Cultivar Acsad 133 exceeds the characteristic of protein percentage in grains at a rate of 12.05%. The study showed that spraying by amino acids glutamine and proline, especially in the elongation and flowering stage, in the mixed concentration of (150 mg l-1glutamine with 150 mg l-1 proline) was significantly superior than other concentrations, as it gave highest averages in the characteristics: fertile spikes number of 392.02 spikes m2; in grains number per spike-1 at 77.89 grains spike-1; grains yield at 7.50 Mg ha-1; biological yield was 16.43 Mg ha-1; harvest index at 45.73%; and protein percentage reached 12.04%.
Keywords: Glutamine; proline; Triticum aestivum L.; soft wheat.