Authors:
A. V. ABRAMCHUK, candidate of biological sciences, associate professor,
S. K. MINGALEV, doctor of agricultural sciences, professor,
M. Yu. KARPUKHIN, candidate of agricultural sciences, associate professor,
Ural State Agrarian University (42 K. Liebknekhta str., 620075, Ekaterinburg).
Abstract. Research was conducted in 2017–2018. For two years, the effect of drugs from various classes of compounds at concentrations recommended by the manufacturer was studied. The scheme of the experiment includes four variants: 1) control (seeds soaked in distilled water); 2) Epin-extra (concentration – 0.05 ml / 100 ml of water); 3) Zircon (concentration – 0.05 ml / 100 ml of water); 4) Orton-Growth (concentration – 0.5 g / 250 ml of water). Time of soaking seeds in water and treatment with drugs in all studied variants is 4 hours. During the research it was established that presowing seed treatment with growth regulators has a significant influence on the development of Tibetan lofant plants: the germination energy and laboratory germination increase, all biometric parameters of plants increase, and the growth of aboveground and underground biomass is observed. Higher values were noted in the fourth variant: ground biomass (an average of 1 shoot) increased in comparison with the control variant by 0.37 g (62.7 %), and underground – by 0.08 g 80.0 %). In the structure of the aerial biomass of the shoot, leaves predominate in all variants, they account for 0.47 ± 0.03 g (control) up to 0.74 ± 0.02 g (Orton-growth).
Keywords: plant growth regulators: Epin-extra, Zircon, Orton-growth, seed treatment, Lofant Tibetan.
