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Information × Registration Number 0226U000303, (0121U100556) , R & D reports Title Development of theoretical principles for using the heterosis effect in F1 sunflower hybrids adapted to climatic changes, based on different germplasms, with improved combinations of valuable economic features popup.stage_title Розроблення теоретичних основ використання ефекту гетерозису в F1 гібридів соняшнику, адаптованих до змін клімату, створених на основі різних зародкових плазм, з поліпшеними комбінаціями цінних господарських ознак Head Kyrychenko Viktor V., Доктор 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 theoretically justify the use of the heterosis effect in sunflower hybrids created by combining parental germplasms of different origins in various combinations of desirable traits, including tolerance to climatic changes, resistance to common diseases, improved fatty acid composition of oil and technological suitability for modern technologies popup.description2 The study object was sunflower breeding (self-pollinated lines, simple and three-line hybrids). The purpose was to theoretically justify the use of heterosis in sunflower hybrids derived from combining parental germplasms of different origins into various combinations of valuable traits, including tolerance to climate change, resistance to common diseases, improved fatty acid composition of oil and technological suitability for current cultivation technologies. Field, laboratory, and statistical methods were used. A working collection of lines formed by a set of economic traits was prepared. “Line Catalog” was published. The monograph “Methodological Foundations of Sunflower Production Process Management” was published (Kharkiv, 2022). Scientific and methodological guidelines “Methodological Foundations of Heterosis Effect Variability in Economically Valuable Traits of Sunflower Depending on Environmental Conditions” were published (Kharkiv, 2023). The following guidebooks were published: “Phytotoxicity of Sulfonylurea Herbicides and Sunflower Breeding” (Kharkiv, 2021); “Agricultural Crop Variety Science. Part 1. Oilseed Crops (Sunflower and Oilseed Flax)” (Kharkiv, 2025). The following hybrids were submitted for qualifying examination: ‘Korund’, ‘IR Sonet’, ‘IR Polysk’, and ‘IR Ahata’. 9 first-generation hybrids were included in the State Register of Plant Varieties Suitable for Dissemination in Ukraine: ‘Blyks’, ‘Sokrat’, ‘Vyrii’, ‘Epikur’, ‘Azart’, ‘Holkiper’, ‘Yaskravyi’, ‘Khoryv’, and ‘IR Polysk’. 7 lines – hybrids’ parental components were also included in the State Register. The results were reported in a monograph, a section of an international monograph, two guidebooks; 17 articles in professional Ukrainian journals; 15 conference abstracts, two information articles, 42 certificates and patents for plant varieties. In 2021–2025, 41 license agreements were concluded for the sale of scientific products. Product Description popup.authors Nina M. Leonova Valeriia P. Kolomatska Valentyna I. Syvenko Oleh H. Suprun Borys P. Shepilov Viktor V. Andriienko Kateryna М. Makliak Nadiia V. Kuzmyshena Tetiana M. Kyrash Serhii A. Chumachenko Dmytro V. Kurylych popup.nrat_date 2026-01-07 Close