K. Rahiniza, M. M. A. Adam, A. R. M. S. Firdaus, M. S. Hamidah, H. Shahida, Z. N. Hidayah, S. Elixon4, R. Asfaliza Rice, chlorophyll index, selection, salt tolerant, morphological traits 40-50 7(2) 2023 April 2023 A phenotypic evaluation of 89 potential salinity tolerant rice lines obtained from hybridization of Malaysian elite rice variety (MR 297) and salt tolerant varieties Pokkali and Salinas 2 (NSIC Rc184) was carried out according to chlorophyll index and plant morphological traits. ANOVA test showed a significant difference of chlorophyll index among check varieties when grown under salt-stressed treatment as compared to non-stressed treatment. Further evaluation on chlorophyll index among potential salinity tolerant rice lines found that around 56 lines have higher chlorophyll index compared to tolerant check variety Pokkali ranged from 42.60 to 50.83 SPAD value. Cluster analysis on thirteen selected lines discriminated the lines into two groups according to tolerant and sensitive check varieties. As conclusion, chlorophyll index is one of indicators to determine the inhibitory effect of salinity on photosynthetic efficiency and could be used in identifying potential salt tolerant lines along with other plant morphological traits.