Impact of Salinity Stress on Growth Attributes of Some Salt-Sensitive and Tolerant Lines of Mung Bean (Vigna radiata L.) - Abstract
Soil salinity is distinguished in primary and a secondary salinity. The primary one is a consequence of natural processes of rock disintegration that release soluble salts, such as chlorides of sodium, calcium and magnesium, sulphates and carbonates into water, which are deposited in soil solution through the wind and rain. The most easily transported salt in this process is sodium chloride. This study investigates the impact of salinity stress in salt-sensitive and salt-tolerant cultivars of Vigna radiata, commonly known as mung bean. Experiment was conducted in petri dishes and 120 mM NaCl was applied. The study reveals distinct differences in the salt-sensitive and salt-tolerant lines of V. radiata. Salt-sensitive cultivars exhibited reduction in their shoot & root fresh and dry biomass. In contrast, salt-tolerant lines showed minimum reduction in their biomass (fresh & dry). 07006MB and 08009MB showed slight increase in their fresh and dry shoot biomass under 120mM NaCl. Similarly, root fresh biomass was slightly increased in 07006MB and 14005MB, but dry root biomass was observed maximum in line 14005MB as compared to other lines under 120 mM NaCl. These findings provide valuable insights into the adaptive strategies of salt-tolerant cultivars, offering a basis for targeted breeding programs aimed at enhancing salinity resilience in this economically significant legume. In summary, this research deepens our understanding of the impact of salinity stress on growth pattern of Vigna radiata lines. It lays the groundwork for developing robust crop varieties capable of thriving in saline environments.