Effect of saline irrigation on plant water traits, photosynthesis and ionic balance in durum wheat genotypes
2021
Abstract In the era of climate change, decreased precipitation and increased evapo-transpiration hamper s the yield of several cereal crops along with the soil salinity and poor ground water resource. Wheat being the moderately tolerant crop face many challenges in the arid and semi-arid regions under irrigated agriculture. In view of this, the study was planned to explore the potential of durum wheat genotypes under salinity on the basis of physiological traits. Experiment was designed as RBD in three replications to evaluate 15 wheat genotypes with moderate saline irrigation (ECiw - 6 dS m-1) and extreme saline irrigation (ECiw - 10 dS m-1) along with one set of control (Best available water). Different physiological traits such as water potential (ψp), osmotic potential (ψs), relative water content (RWC), Na+ and K+ content were recorded in roots as well as shoots at the reproductive stage whereas photosynthetic rate and chlorophyll content were measured in the flag leaves. A significant variability (p
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