In the era of climate change, decreased precipitation and increased evapo-transpiration hampers 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 < 0.001) was noted among the genotypes under different stress environments and it was observed that durum genotype HI 8728 and HI 8737 showed less reduction in plant water traits (RWC, ψp and ψs) than the salinity tolerant checks of bread wheat KRL 99 and KRL 3–4. HD 4728 and HI 8708 maintained higher photosynthetic rate as well as higher chlorophyll content under the extreme salinity level of ECiw – 10 dSm−1. No significant differences were found in root Na+ in genotypes KRL 99 (3.17g), KRL 3–4 (3.34g) and HI 8737 (3.41g) while in shoots, lowest accumulation was seen in KRL 99, MACS 3949 and KRL 3–4 at ECiw – 10 dSm−1. The mean range of K+ content was 7.60–9.74% in roots and 4.21–6.61% in shoots under control environment which decreased to 50.77% in roots and 46.05% in shoots under extreme salinity condition of ECiw – 10 dSm−1. At ECiw – 10 dSm−1, KRL 99 maintained highest K+/Na+ in both root and shoot followed by KRL 3–4, HI 8737, MACS 3949, HD 4728 in roots and MACS 3949, KRL 3–4, MACS 4020, HD 4758, MACS 3972 and HI 8713 in shoots. The differential response of durum wheat genotypes under salinity particularly for physiological traits, confer their adaptability towards stress environments and exhibit their potential as genetic sources in breeding programs for improving salt stress tolerance.

Mungbean is an important food grain legume with high economic status. It has an excellent source of dietary protein and nutritional health benefits, particularly for the vegetarians. It increases soil fertility and also plays an imperative role in major cropping systems due to its short life span. Production of mungbean is still decreasing due to its susceptibility towards various environmental stress factors. Salt stress is one of the most prevailing abiotic stress imposing threats for agriculture food crops along with increasing world population and limited natural resources. Fewer efforts have been made to develop improved variety of mungbean. Present review summarizes the adverse effects of salt stress, mungbean response at physiological and molecular level. It covers recent studies on introgression of useful traits in mungbean for its better adaptability and survival under stressed conditions. Modern biotechnological approaches and traditional breeding methods may assist the development of salt tolerant cultivars of mungbean for salinity affected area in arid and semi-arid regions. Researchers involved in this area should keep this goal on priority for sustainable mungbean production. Availability of protein rich food may help to reduce the problem of malnutrition in poor families and national food security issue for continuous rising population.

Salinization is an ever-increasing problem that severely affects crop performance and finally agricultural production worldwide. This adverse effect of salinity on crop plants occurs in two phase i.e. ionic and osmotic phase. Plants accumulate osmolytes to combat with the osmotic phase of salinity. Osmolytes are polar, non-toxic, uncharged organic compatible solutes that are easily soluble in nature and do not cause any disturbance in normal cellular functions. Osmotic adjustment is crucial to maintain cell turgidity and membrane stability. Osmolytes also regulates the protein folding essential for mediating stress signalling mechanisms or pathways responsible for tolerance. Additionally, they help maintain thylakoid membrane stability, keeping the plants in photosynthetically active phase under stressed conditions. Osmolytes are broadly classified into three groups: ammonium containing compounds (polyamines and betaines), sugars, amino acids and sugar alcohols. In consideration of immense potential of plant osmolytes under salinity, the present review emphasized on the biosynthesis of various reported osmotically active substances and their involvement in different mechanisms or pathways responsible for salinity tolerance in crop plants.