Influence of natural growth regulators «Ecolarix» and «Biolarix» on early stages of morphogeny of soft wheat

Abstract

The article reflects the results of a study on the use of natural growth regulators with a fungicidal action: «EcoLarix» and «BioLarix». The effect of the drugs on the growth and development of early wheat ontogenesis of varietal variety «Vatan» is shown. Concentrations of drugs that have the maximum stimulating effect on wheat in the two-week-old seedling stage were revealed: for «EcoLarix», the concentration is 80 mg/l. The preparation «BioLarix» is more preferable for stimulating the growth of wheat in the early stages of ontogenesis, causes a manifestation of protective ontogenetic strategy in common wheat - with increasing dose of the drug the morphological integration of plants grows. The protective nature of the plant's response to the drug is confirmed by the fact that the maintenance and enhancement of the morphological integrity of plants requires energy expenditure, and adaptation to stress is always energy-intensive. The variability of the ratio of aboveground to underground mass decreases with increasing dose to 60 mg/l and increases with further increase in the dose of the drug. In general, the limits of variation of this indicator (23.73 – 42.68 %) in the experiments with the «BioLarix» preparation are lower than in the experiments with the testing of the «EcoLarix» preparation (48.89 – 249.70 %). The vitality of soft wheat seedlings with an increase in the dose of the preparation increases with the manifestation of the hormetic effect at a dose of 20 ml/l. It has been established that energy costs in the development of plants are redistributed between maintaining the morphological integrity of plants, stimulating and stabilizing plant growth. Summarizing the response of various indicators of seedlings to the use of the preparation «BioLarix», we can conclude that the optimal dose is 20 ml/l.