Mehran Khan, Muhammad Mohibullah, Syed Noor Muhammad Shah, Muhammad Amin and Shahbaz Asmat Heritability, variability, cotton, heriatability,genetic advance, morphological characterization 1-8 2 (4) 2018 October,2018 The study was carried out to evaluate the extent of genetic variability in elight germplasm accessions of upland cotton. Highly significant differences recorded for days to flowering, bolls plant^-1, boll weight, number of seeds boll^-1 and yield plot^-1. However the non-significant differences were recorded for plant height and number of monopodial branches plant^-1. The per se performance of variable range was observed for all studied traits for all the elite cotton accessions. The current study suggests that the PCV was higher than the GCV for all traits. Borad sense heritability was highest for days to flowering and yield per plot demonstrates that these traits could be successfully transferred to offspring, if selection for these characters is performed in the hybridisation programme. Highest genetic advance observed for boll weight and plant height which implies that these characters could be used to select upland elite accession genotypes for a notable improvement in cultivation in changing environments. The morphological characterization based on pollen color, stigma position and angle of monopodia will help cotton breeder to identify the elight germplasm accessions.