INFLUENCE OF AMINO ACID BIOSTIMULANTS ON SEED YIELD, OIL CONTENT, AND PROTEIN PERCENTAGE IN DIFFERENT SESAME CULTIVARS

• Julan Zaben Habib

  Department of Biology, College of Education for Pure Sciences, Tikrit University, Iraq

  Author

Background: Sesame (Sesamum indicum L.) is an important oilseed crop from an economic perspective. Amino acid biostimulants have been proposed as a green alternative to enhance the productivity of crops and seed quality. Objective: This study was conducted to explore the response of the yield, growth components, seed yield and seed quality traits of three sesame cultivars to application between some concentrations of amino acids under conditions available in Kirkuk-Iraq
Methods: The study was carried in a factorial design based on randomized complete block design with three replications during the 2025 growing season. A field experiment was conducted on three sesame cultivars (Shandweel 3, Giza 32 and Toshka 1) which were sprayed using four concentrations of amino acids(0,2,4 and6 mL L-1).
Results: Cultivar, amino acid concentration and their interaction were significant for all traits (P ≤ 0.05). Amino-Acids concentration have been considered major bio fertilizer yield components and it appears that distant concentrations of amino-acid are highly influential for seed quality. The maximum capsules per plant (84.1), seeds per capsule (72.7) and 1000–seed weight (3.85 g) recorded by Toshka 1 at 6 mL L⁻¹ of leaf extract application. The higher seed yield per plant (29.4 g) and total seed yield (1679 kg ha-1) were obtained after the same treatment. The maximum oil and protein content were also 54.1% and 24.7%, respectively. We used principal component analysis (PCA) to show a positive correlation between growth traits, yield components and seed quality characters. Conclusion: Foliar application of amino acid biostimulants successfully increased sesame productivity and seed quality, and 6 mL L⁻¹ concentration was the most effective. While all the tested cultivars were responsive to rhizobial inoculation, cultivar Toshka 1 was the most responsive and may be recommended for sesame production under Iraqi conditions.

• pdf

This work is licensed under a Creative Commons Attribution 4.0 International License.