Evaluating Physiological and Hormonal Responses of Two Distinct Rice Genotypes Under High Temperatures.

ABSTRACT: Climate change poses a major threat to rice productivity, particularly due to high-temperature stress during anthesis, which severely impacts the grain yield. Understanding the physiological and biochemical responses of different rice genotypes to high-temperature stress is critical for breeding resilient varieties. In this study, we assessed two contrasting rice genotypes, high-temperature-tolerant-1 (HTR-1) and high-temperature-sensitive (HTS-5), to confirm previously established physiological and hormonal mechanisms associated with high-temperature tolerance. The study evaluated morphological, physiological, and biochemical markers at the anthesis stage under control (29/24 °C) and high-temperature stress (38 °C for six hours) conditions. Our results confirmed that HTR-1 exhibits superi

SUBMITTER: Qi X 

PROVIDER: S-EPMC11901512 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature