Статті, тези конференцій. Навчально-науковий інститут агротехнологій, селекції та екології

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https://dspace.pdau.edu.ua/handle/123456789/10

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Перегляд Статті, тези конференцій. Навчально-науковий інститут агротехнологій, селекції та екології за Ключові слова "antioxidant system"

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  • Ескіз
    Публікація
    Physiological response of soybean to cold stress during the germination stage
    (2026-03-02) Staniak, M.; Stępień-Warda, A.; Єремко, Людмила Сергіївна; Yeremko, L. S.
    This article examines the physiological and biochemical transformations in soybean (Glycine max L.) seeds and seedlings under the influence of low-temperature stress during germination. The author explores how cold stress affects seed imbibition, enzymatic activity, and the mobilization of storage reserves required for heterotrophic growth. The research highlights key physiological responses, such as changes in cell membrane permeability, increased electrolyte leakage, and the accumulation of reactive oxygen species (ROS). Special attention is given to the role of the antioxidant defense system and the accumulation of cryoprotectants, such as soluble sugars and proline, in mitigating chilling injury. The study concludes that the germination stage is a critical window where cold stress can lead to reduced field emergence and uneven plant stands, emphasizing the need for selecting cold-tolerant genotypes and using protective seed treatments to ensure stable crop establishment in temperate climates.
  • Ескіз
    Публікація
    Soybean response to cold stress during the flowering based on physiological indicators
    (2026-03-02) Staniak, M.; Czopek, K.; Єремко, Людмила Сергіївна; Yeremko, L. S.
    The article investigates the physiological and biochemical responses of soybean (Glycine max L.) to low-temperature stress during the critical flowering stage. The author analyzes how cold stress disrupts pollen viability, fertilization processes, and overall reproductive success, leading to significant yield losses. The research focuses on key physiological indicators, including changes in chlorophyll fluorescence, membrane lipid peroxidation (MDA levels), and the activity of antioxidant enzymes (SOD, POD). It was established that cold-tolerant genotypes exhibit a higher capacity for osmotic adjustment and maintain more stable photosynthetic rates under thermal stress. The study substantiates the importance of monitoring these physiological markers to evaluate soybean resilience and provides a basis for breeding programs aimed at developing varieties better adapted to unpredictable temperature fluctuations during the generative phase.