Interrelationship between yield and yield components was studied in two rice cultivars, Basmati-370 and Basmati Pak and their true breedings mutant lines viz EF-29-i, EF-4-73 1st EF-4-73-1, and EF-27-73-1, DM-16-5-2 and EF-2-11. These vat' let--les/mutant lines were grown at two population densities (22x15 cm and 22x30 cm). Correlation coefficients were worked out between various yield components. Panicle length showed a positive and significant correlation with number of grains per panicle and panicle weight. A highly significant correlation was observed between number of branches per panicle, number of grains per panicle and panicle weight. Thousand grain weight was negatively correlated with all the yield components studied. It was also found that change in the planting density did not show any influence on the interrelationship of various trait.