The study was conducted at research farm of FASAI, Rama University, Mandhana, Kanpur-209217 during Rabi 2021-22. It focused on the inheritance of grain yield and its components in 90 varieties of bread wheat, 45 indigenous and 45 exotics. The experiment used an Augmented Block Design and revealed a high degree of variability in all characters in both indigenous and exotic wheat lines. High to moderate estimates of broad sense heritability were recorded for various factors, including tillers per plant, days to maturity, spikelets per spike, harvest index, test weight, days to 50% flowering, grains per spike, and peduncle length. High estimates of genetic advance were also recorded for harvest index, days to maturity, tillers per plant, and plant height.