A large-boiled line, R-7 selected in M2 generation after seed irradiation of cotton variety AC-134, was grown and tested in M3 generation. Seventeen progenies of R-7 in M3 and control plants of variety AC-134 were used to compare yield, boll size, seed lint indices. Data of 17 progenies of R-7 were analysed in order to estimate the variances, correlation coefficients, heritability and selection advance. Significant amounts of genetic variability were present for yield and seed index. Genetic variance value for boll size and lint index were very low. Similarly, heritability estimates for yield and seed index were more than 0.75, and those for boll size and lint index less than 0.50. Boll size and seed index were found genetically correlated. Selection for higher yielding genotypes was found possible. Induced variation was utilized by selection and some variation is still left for further progress.