Relationship between Freezing Tolerance and Leaf Growth during Acclimation in Winter Wheat

Winter hardiness is influenced by many environmental factors, and freezing tolerance among the main ones, rendering phenotypic selection of winter wheat (Triticum aestivum L.) under field conditions a difficult task due to irregular occurrence or absence damage in trials. Plant growth response low temperatures during acclimation period might be used as an indirect approach assess tolerance. Thirteen cultivars were investigated for autumn spring two growing seasons. Additionally, precise non-destructive technique was applied study leaf at high temporal resolution accompanied test laboratory semi-field conditions. The results revealed variations thermal patterns 13 cultivars. with lower base temperature (Tb) values, particular ‘Lakaja DS’ ‘Sedula DS’, grew slower and, thus, had increases (SlpLER-T) than fast-growing cultivars, such ‘Simano” ‘KWS Ferrum’, whose SlpLER-T values stronger Tb higher. A correlation analysis traits showed clear association between parameters tolerance, indicating certain level genetic adaptation cessation temperatures, which confirmed that these are important factors explaining different evaluated (LT30) strong negative (r = ?0.82 ÷ ?0.89, p 0.01) scores from experiment, supporting essential contribution rate hardiness. findings provide novel information development winter-hardy adapted future environments.