Abstract

The effect of new environmentally friendly synthetic plant growth regulators Ivin, Methyur, Kamethur and biofertilizers Rostok Extra and Radix Tim forte+, used separately and in combination, on the growth of an important cereal crop - winter wheat (Triticum aestivum L.) variety Mudríst’ Odes’ka during the vegetation period was studied. Their regulatory activity on wheat growth was compared with the regulatory activity of auxins NAA and 2,4-D. In wheat plants treated with the synthetic plant growth regulators Ivin, Methyur, Kamethur and biofertilizers Rostok Extra and Radix Tim forte+, used separately and in combination, an increase in such morphometric indicators as length of the shoots (mm), length of the roots (mm) and plant biomass (g), as well as biochemical indicators such as the content of chlorophylls and carotenoids (mg/g FW) and the content of total soluble protein (g/100 g FW) was observed compared to similar indicators in control wheat plants treated with distilled water. The regulatory activity of the synthetic plant growth regulators Ivin, Methyur, Kamethur and biofertilizers Rostok Extra and Radix Tim forte+, used separately and in combination, on wheat indicators was similar to or exceeded the regulatory activity of the synthetic auxins NAA and 2,4-D. The obtained results allow us to conclude that synthetic plant growth regulators and biofertilizers exhibit a synergistic auxin-and cytokinin-like effects in vital processes of wheat, namely: they enhance the division, elongation and differentiation of plant cells, improve the uptake of water and nutrients by the root system, increase the efficiency of photosynthesis and protein metabolism, which contributes to the enhanced growth and development of wheat. The findings from this study could be valuable for farmers looking to optimize wheat production and for researchers interested in plant growth regulation.

Keywords:Triticum aestivum L; Synergistic effect of plant growth regulators and biofertilizers; Plant growth; Uptake of water and nutrients; Photosynthesis; Protein metabolism