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Information × Registration Number 0226U000307, (0121U100557) , R & D reports Title Establishment of variability patterns of reproductive processes in sunflower influenced by growth regulators and microfertilizers and, on their basis, development of ways to increase the seed productivity of hybrid parents popup.stage_title Встановлення закономірностей мінливості репродукційних процесів соняшнику під впливом регуляторів росту і мікродобрив та розроблення на їх основі способів підвищення насіннєвої продуктивності батьківських компонентів гібридів Head Buriak Yurii I., Кандидат сільськогосподарських наук Registration Date 07-01-2026 Organization Institute of Plant Breeding named after V. Ya. Yuriev of the National Academy of Agrarian Sciences of Ukraine popup.description1 Purpose - to establish and theoretically justify variability patterns of vegetative and generative development of sunflower plants under the influence of modern growth regulators and microfertilizers and to develop, on their basis, ways to increase seed productivity of hybrid parents in the eastern forest-steppe of Ukraine popup.description2 The study object was seed productivity of parental forms and sunflower hybrids. The study subject was fields of sunflower female forms ‘Skh66A’, ‘Skh588A’, and ‘OdOl1A’; male forms ‘Kh526V’, ‘Kh1814V’, and ‘Kh2283V’; sunflower hybrids ‘Kadet’, ‘Kosmos’, ‘Yarylo’, and ‘Epikur’; plant growth regulators AKM, Antistress, and Endophyt L1; microfertilizers Raykat Start, Mikrokat Oil Crops, Atlante, Aminokat 30, ENDO CuZnB (Endobor brand), Avangard NPK+M/E Start, Avangard Grow Amino, Avangard Boron, Avangard Sunflower, Avangard PK, and Avangard Grow Humate; macrofertilizers Magnesium Sulfate and Urea; fungicides Barion and Exor. The project purpose was to establish and theoretically substantiate variability patterns of vegetative and generative development of sunflower plants under the influence of modern growth regulators and microfertilizers and, on this basis, to develop a technology for producing seeds of parental components of sunflower hybrids depending on varietal characteristics and agroclimatic conditions of a growing zone. Methods - field and laboratory experiments, collection and accumulation of information and computer processing of data. Results and Novelty. For the first time in Ukraine, a method for increasing the production of top-quality basic sunflower seeds has been developed; the method is based on the differentiated and complex use of effective domestic and foreign plant growth regulators, microfertilizers and their mixtures. Methodological guidelines were developed; Patent’s for a utility model were received. The developed scientific products have been implemented in scientific institutions and agricultural enterprises in the eastern forest-steppe and northern steppe of Ukraine. Product Description popup.authors Oleksandr V. Chernobab Yurii Y. Ohurtsov Liudmyla M. Makhnova Svitlana M. Voloshyna Sofiia K. Deineko popup.nrat_date 2026-01-07 Close