Вплив стійкості до низьких температур на параметри екологічної пластичності пшениці м’якої озимої в контексті змін клімату

• Date: 2026
• Main Authors: Yarosh, Andrii, Riabchun, Nataliia, Riabchun, Viktor, Kuzmyshyna, Nataliia, Solonechna, Olha
• Format: Article
• Language: English
• Published: Publishing House ‘Akademperiodyka’ of the National Academy of Sciences of Ukraine; Institute for Problems of Cryobiology and Cryomedicine 2026
• Subjects: морозостійкість; генотиповий ефект; адаптивний потенціал; стресостійкість; пшениця м’яка озима
• Online Access: https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/2093
• Journal Title: Problems of Cryobiology and Cryomedicine

This study examines how low-temperature tolerance influences environmental plasticity of winter bread wheat — a critical factor for crop homeostasis amid global warming challenges. Among winter wheat genotypes graded by hypothermia tolerance, 19.0 % demonstrated the highest environmental plasticity for yield. Genotypes with superior genetic potential adaptability (identified by the lowest rank sums (rank sum = 2) of genotypic effect and regression coefficient (Oktava Odeska, Pontiyka, Zamolxe, NE 10507) yielded 128–148 % related to the check cultivar. In the winter bread wheat cultivars under investigation, there was a moderate negative correlation between freezing tolerance of winter bread wheat leaves in early spring and rank sum of genotypic effect and yield plasticity (r = –0.42; P < 0.05) and a moderate positive correlation between tolerance to critical freezing temperatures and rank sum of genotypic effect and yield plasticity (r = 0.41; P < 0.05). The selected winter bread wheat genotypes with high genetic potentials of environmental plasticity represent high-value starting materials for breeding new wheat cultivars that would be adaptable to current climatic changes.   Probl Cryobiol Cryomed. 2025; 35(3): 138—148