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Information × Registration Number 0225U005294, (0121U108628) , R & D reports Title Scientific bases of creation source material for selection of hybrids corn FAO 300-500 with the increased compensatory possibilities at cultivation in stressful conditions popup.stage_title Наукові основи створення вихідного матеріалу для селекції гібридів кукурудзи ФАО 300-500 з підвищеними компенсаційними можливостями при вирощуванні в стресових умовах Head Dziubetskyi Borys V., Доктор сільськогосподарських наук Registration Date 30-12-2025 Organization State Institution "Institute of Grain Crops" of the National Academy of Agrarian Sciences of Ukraine popup.description1 Create a new source material of different genoplasms with high stability of breeding traits, tolerant to stress and on its basis to synthesize maize hybrids FAO 300-500 with high resistance to biotic and abiotic phenomena, adapted to the conditions of the Steppe and Forest-steppe zone popup.description2 Due to changes in climatic conditions in Ukraine, significant fluctuations in grain yield have been observed in maize hybrids of the medium- and medium-late maturity groups (FAO 300–500), which are characterized by a high yield potential. Under these conditions, the development of new source breeding material with enhanced stability of economically valuable traits and resistance to a complex of abiotic and biotic stresses is highly relevant. The objective of this study was to develop scientific principles for creating source material for the breeding of maize hybrids FAO 300–500 with increased compensatory capacity under stress growing conditions and, on this basis, to synthesize highly stress-resistant and well-adapted hybrids for the Steppe and Forest-Steppe zones of Ukraine. As a result of the conducted research, a database of the heterotic structure of drought- and heat-tolerant maize hybrids was created; breeding approaches for the selection of source material with intensive grain moisture loss were developed; and the main heterotic models of hybrids with increased adaptability to environmental stress factors were identified. Scientific foundations for the development of source material for breeding maize hybrids FAO 300–500 with high compensatory capacity were established. In the course of the breeding program, 100 maize inbred lines with high combining ability, seed productivity, and resistance to drought and high temperatures were developed. Six maize hybrids FAO 300–500 were submitted to the State Variety Testing, five of which were entered into the State Register of Plant Varieties Suitable for Dissemination in Ukraine. Under Steppe conditions, the developed hybrids exceeded the best imported analogues in grain yield by 0.30–1.36 t/ha at grain harvest moisture levels comparable to the standards. Product Description popup.authors Natalya A. Bodenko Maksym S. Olkhovyk Dmytro S. Kuprichenkov Oleksand V. Kulyk Hanna I. Koval Olena A. Matvieieva popup.nrat_date 2025-12-30 Close