Studying the biological effectiveness of phytomelatonin as a promising plant growth regulator

As a result of our research determination of germination and germination energy of seeds, as well as analysis of seedling development (GOST 33061-2014) was chosen as a standard method for testing growth substances for the analysis of biological activity. Research aimed at establishing the optimal concentration of phytomelatonin solutions for pre-sowing seed treatment, as well as studying their effect on seed germination and the intensity of their germination, was carried out in the laboratory for testing elements of agricultural technologies, agrochemicals and plant growth regulators of the All-Russian Research Institute of Agrochemistry named after D.N. Pryanishnikov in 2019-2020. The studies were carried out in two pools of laboratory experiments. The objects of research in the experiment were: 1. Melatonin (N-acetyl-5-methoxytryptamine), which is a pleiotropic molecule of indole nature; 2. Spring wheat, Zlata variety – a variety of lutescens; 3. Soybean, Olympia variety; 4. Cucumber, hybrid Hermann F1 (protected soil). As a result of our research, the range of optimal concentrations for seed treatment with phytomelatonin was determined, which was 0.05% for spring wheat; 0.01 and 0.0001%. For soybean and cucumber crops, the range of optimal concentrations for seed treatment with phytomelatonin was 0.05; 0.001 and 0.0005% respectively. In experimental variants with the studied concentrations, we obtained high biometric indicators of crop seedlings (length of root and sprout), germination, and germination energy.