INFLUENCE OF PRESOWING TREATMENT OF SEEDS WITH COMPOSITIONS OF METABOLICALLY ACTIVE SUBSTANCES ON MORPHOMETRIC INDEXES OF WINTER RYE VARIETIES SYNTHETIC 38 AND ZABAVA AT DIFFERENT STAGES OF ONTOGENESIS
Abstract
Winter rye is a promising crop for the Polissya region of Ukraine, so the search for and development of effective and safe approaches to stimulate the growth and development of this crop is relevant. The material of the study was the seeds of winter rye (Secale cereale L.) varieties Synthetic 38 and Zabava, and compositions of metabolically active substances: vitamin E (10-8 M), paraoxybenzoic acid (POBA) (0,001 %), methionine (0,001 %), ubiquinone-10 (10-8 M) and MgSO4 (0,001 %), which were used in the following combinations – vitamin E+POBA+methionine, vitamin E+POBA+methionine+MgSO4, vitamin E+ubiquinone-10. Presowing treatment of seeds with the studied compositions was performed. The research was conducted in the following phases of rye development: tillering, tubing, earing, flowering and milk ripeness. The studied compositions of metabolically active compounds effectively stimulate the growth of winter rye plants of Synthetic 38 and Zabava varieties during phenological phases of development. The greatest stimulating effect is observed in the tillering phase. At the same time, there is a greater increase in stem mass compared to height in groups of plants with presowing treatment with compositions of vitamin E+POBA+methionine+MgSO4 and vitamin E+ubiquinone-10. During the studied phenological phases of development in groups of plants of both varieties with presowing treatment with the studied compositions increases the length, weight and number of roots. The composition of vitamin E+POBA+methionine+MgSO4 shows the greatest stimulating effect. The results obtained may indicate an increase in the efficiency of the root system, which ensures the growth of the plant. The influence of compositions of metabolically active compounds, namely vitamin E, ubiquinone, paraoxybenzoic acid, methionine, and MgSO4 on the growth processes of aboveground and underground parts of winter rye plants of Synthetic 38 and Zabava varieties was investigated for the first time and the highest efficiency of vitamin E+POBA+methionine+MgSO4 and vitamin E+ubiquinone-10 to stimulate the growth of both aboveground and underground parts of the plant of both studied varieties.
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