Influence of pre-sowing seed treatment on the activation of the primary growth processes in winter wheat
Abstract
Purpose of the research is to determine the effect of pre-sowing seed treatment with chemicals for sterilization and disinfection on seed sowing quality and activation of growth processes in winter wheat seedlings. Methods. Gradual surface sterilization of the source material with solutions of 1% potassium permanganate, 96% ethanol and 0.1% silver nitrate was used. For further processing, fungicidal pesticides Raxil Ultra (tebuconazole) and Lamardor (tebuconazole + prothioconazole) were used, both separately and in mixtures with Gaucho (imidacloprid) insecticidal pesticide. Water treatment served as a control. Results. It was determined that chemical sterilization of seeds before germination helps to destroy the external infection, but leads to inhibition of the initial growth. The use of pesticides reduced germination energy and seed germination, but its effect on growth processes was ambiguous. The results of the studies show that pre-sowing seed treatment with various chemicals had an ambiguous effect on the development of oxidative stress. It was found that the use of Lamardor for pre-sowing seed treatment showed stimulating effect on the activation of primary growth processes in winter wheat plants. Conclusions. According to the complex characteristics of the effect of the studied treaters on seed sowing quality, Lamardor treater (tebuconazole + prothioconazole) was the optimal one, as it provided reliable protection against pathogens and contributed to active formation of seedlings and primary roots, the length of which exceeded the control variant by 29% and 7% in the stage BBCH 07 and 28%. and 43% in stage BBCH 10, respectively. In terms of dry matter content in coleoptiles and roots, this treatment variant was somewhat inferior to the control due to the increase in the activity of free radical processes. However, according to the complex characteristics of the germination process (energy index), the use of Lamardor for pre-sowing seed treatment contributed to the formation of the most viable plants.
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