Study of the genetic variability of durum wheat (Triticum durum Desf.) in the face of combined stress: water and heat.

ABSTRACT: The devastating effects and extent of abiotic stress on cereal production continue to increase globally, affecting food security in several countries, including Tunisia. Heat waves and the scarcity of rainfall strongly affect durum wheat yields. The present study aims to screen for tolerance to combined water and heat stresses in durum wheat at the juvenile stage. Three combined treatments were tested, namely: T0 (100% field capacity (FC) at 24 °C), T1 (50% FC at 30 °C), and T2 (25% FC at 35 °C). The screening was carried out based on morphological, physiological, and biochemical criteria. The results showed that the combined stress significantly affected all the measured parameters. The relative water content (RWC) decreased by 37.6% under T1 compared to T0. Quantum yield (F_v/

SUBMITTER: Chaouachi L 

PROVIDER: S-EPMC10781440 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature