Salinity is a significant limitation to agricultural crop productivity worldwide, with varying responses observed among different plant species and cultivars. To address this issue, a study was conducted to identify salttolerant rootstocks for watermelon grafting. Several experiments were carried out to select the suitable grafting technique used for grafting of watermelon. In the experiment, effect of 2 salinity levels (control and 9 dS m-1 of NaCl) was investigated on the basis of growth, physio-morphological and biochemical attributes of salt tolerant rootstocks (Kalash, Crystal Long, Green Round and Desi Bittergourd) and two grafting techniques (hole insertion and splice grafting) were used for improvement of watermelon cultivar (Augusta). Rootstock and scion cultivars seeds were grown in plastic pots, using fine sand as growth medium. Half strength of Hoagland solution was applied to plants as nutrition. The grafted plants were treated with two different concentrations of NaCl. Symptom scoring was conducted, and subsequent measurements included number of leaves, root length, stem length, and diameter per plant, dry matter production was considered. Data of various morphological, physiological and biochemical parameters were collected and analyzed statistically using standard statistical procedures. The study revealed that Crystal Long variety of bottle gourd was salt tolerant and performed better when watermelon is grafted on it.