Кафедра селекції, насінництва і генетики

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Browsing Кафедра селекції, насінництва і генетики by Subject "adaptability"

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    Adaptive properties of plants and yield of energy crops under different growing conditions: A case study from Ukraine
    (2025) Kaletnik, G.; Kulyk, M. I.; Pryshliak, N.; D'omin, D.; Rozhko, I. I.; Кулик, Максим Іванович; Дьомін, Дмитро Геннадійович; Рожко, Ілона Іванівна
    In Ukraine, balancing agricultural efficiency, food security, and energy development is crucial. Energy crops offer a sustainable raw material due to their adaptability and high biomass yields, supporting biofuel production and value-added products like bioplastics and paper. However, the war has severely degraded agricultural land, necessitating reclamation efforts to restore productivity and enhance bioenergy potential. A five-year field study (2019–2023) in Ukraine’s forest-steppe and steppe zones assessed energy crop yields on marginal lands. Research methods included field studies, gravimetric biomass analysis, data visualization, and statistical analysis (ANOVA, LSD at 5% significance). Findings showed that drooping sorghum and perennial sorghum exhibited the highest drought resistance, while switchgrass and drooping sorghum demonstrated the best frost resistance. Drooping sorghum also had the greatest lodging resistance, whereas switchgrass and perennial sorghum were more prone to lodging, particularly in the forest-steppe, suggesting a correlation with precipitation levels. The vegetation pe riod varied by region, influenced by plant biology and environmental factors. In the Steppe, it lasted 170.6–192.0 days, with drooping sorghum having the longest cycle. In the forest-steppe, it ranged from 170.3 to 181.3 days, with switchgrass exhibiting the longest duration. Biomass yields were higher in the steppe (7.8–11.2 t/ha) than in the forest-steppe (7.4–10.4 t/ha). Over four years, switchgrass and perennial sorghum achieved the highest total biomass yields: 56.0 t/ha and 53.6 t/ha in the steppe, and 51.9 t/ha and 51.7 t/ha in the forest-steppe, respectively. Drooping sorghum produced 46.1 t/ha (steppe) and 39.9 t/ha (forest-steppe), while big bluestem had the lowest yield (39.1 t/ha and 36.9 t/ha). Switchgrass and perennial sorghum proved to be the most productive and adaptable energy crops. Their stable biomass production makes them promising candidates for biofuel manufacturing. Future research will explore strategies to enhance yields, particularly through spring foliar fertilization on marginal lands.
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    Adaptive Value of Soybean Varieties by the Seed Quality Parameters
    (2025-06-12) Mazur, O.; Kupchuk, I.; Voloshyna, O.; Mazur, O.; Biliavska, L.; Білявська, Людмила Григорівна; Poltoretskiy, S.
    Production requires highly adaptive varieties that have a  high level of  genetic protection of  the  crop from biotic and abiotic factors of the environment and can maximally realize the potential of the crop in combination with high-quality seeds. The article presents the results of studies on the assessment of soybean varieties by the adaptability of qualitative characteristics in different soil and climatic conditions in terms of the years of research according to the content and output of oil and protein, as well as the  intensity of  oil and protein formation in soybean seeds. The  adaptability of  soybean seed quality of  the  studied varieties was determined by the Eberhard and Russell method. According to the research results, the highest oil content in the seed was observed in the following varieties: Hoverla (22.2%), Artemida (21.1%), and Zolotysta (20.7%), and the highest protein content was recorded in Artemida (39.2%) and Zolotysta (39.3%). It should be noted that the indicated varieties are conservative (bi <1) by the response to changes in the hydrothermal regime, except for Hoverla, which is highly plastic (bi >1) in terms of oil content in the seeds. These varieties have the highest indicators of agronomic stability (As) in terms of protein content in seeds: 99.2; 99.0%, as well as the  sequence of  distribution of  varieties according to homeostaticity of  the  first (Nom1) and second (Nom2) types: Artemida – 131.4 and 109.5; Zolotysta – 99.2 and 62.0. The highest output of oil and protein from seeds was recorded in Hoverla – 0.48 and 0.805 t.ha-1, Artemida – 0.43 and 0.803 t.ha-1, which belong to highly plastic varieties by the response to the improvement of the agro-background of cultivation, the variance of stability (Si2) in which is as close to zero as possible. The combination of high yield of oil and protein became possible due to the high productivity of Hoverla, as for Artemida, these traits are at the level of above mean values. The highest intensity of oil and protein formation in seeds was observed in Hoverla– 4.25 and 7.12, Artemida – 3.8 and 7.06, Amethyst – 3.43 and 6.72 kg.ha-1 per day, which belong to highly plastic varieties (bi >1), and the stability variance (Si2) in which is as close to zero as possible