<p>This study aimed to elucidate the morpho-physiological traits associated with sodicity tolerance and to identify sodicity tolerant genotypes of jamun. Ten genotypes of jamun, including CSJ-3, CSJ-14, CSJ-15, CSJ-16, CSJ-29, CSJ-32, CSJ-33, CSJ-35, CSJ-38, and CSJ-40, representing jamun genetic diversity from different states of India, were treated with normal (control) and three levels of sodic waters [residual sodium carbonate (RSC) levels of ~ 2.5, 5.0 and 7.5 me/l] for a period of 8 weeks. The effects of RSC water irrigation on key growth and physiological responses were recorded. There were significant variations among the genotypes examined in plant growth and physiological attributes, indicating genetic variation for sodicity tolerance in Jamun. Genotypes such as ‘CSJ-15’, ‘CSJ-38’, ‘CSJ-3’, ‘CSJ-40’, ‘CSJ-29’, and ‘CSJ-32’ exhibited desirable traits, including higher chlorophyll content, transpiration rate, photosynthetic rate, stomatal conductance, and relative water content, suggesting their potential for salt tolerance. The results also demonstrated the presence of RSC in irrigation water negatively affects the overall growth and physiological attributes of Jamun. However, three genotypes viz. ‘CSJ-38’, ‘CSJ-40’, and ‘CSJ-29’, displayed better tolerance to RSC_iw treatments, suggesting their ability to withstand higher levels of salinity in the irrigation water. The results provided valuable insights into the salt tolerance levels among the genotypes and led to the identification of tolerant genotypes which can be used in further breeding programme.</p>