Elevated CO₂ Improves the Physiology but Not the Final Yield in Spring Wheat Genotypes Subjected to Heat and Drought Stress During Anthesis.

ABSTRACT: Heat and drought events often occur concurrently as a consequence of climate change and have a severe impact on crop growth and yield. Besides, the accumulative increase in the atmospheric CO₂ level is expected to be doubled by the end of this century. It is essential to understand the consequences of climate change combined with the CO₂ levels on relevant crops such as wheat. This study evaluated the physiology and metabolite changes and grain yield in heat-sensitive (SF29) and heat-tolerant (LM20) wheat genotypes under individual heat stress or combined with drought applied during anthesis at ambient (aCO₂) and elevated CO₂ (eCO₂) levels. Both genotypes enhanced similarly the WUE under combined stresses at eCO₂. However, t

SUBMITTER: Abdelhakim LOA 

PROVIDER: S-EPMC8940247 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature