Archives of Current Research International

The study was conducted during the 2023–25 Rabi season at the Research Farm of the Department of Genetics and Plant Breeding, School of Agriculture, Lovely Professional University, Punjab, India. Thirteen genetically diverse wheat genotypes, including ten lines from NBPGR and three testers from IIWBR, were crossed in a Line x Tester mating design to generate 30 F₁ hybrids. These hybrids, along with their parents and a standard check variety, were evaluated to determine the type of gene action influencing yield and associated traits. Observations were recorded on eleven quantitative characters viz., days to 50% flowering, days to maturity, plant height (cm), number of effective tillers per plant, length of main spike (cm), number of spikelets per main spike, number of grains per main spike, thousand grain weight (g), biological yield per plant, harvest index and grain yield per plant (g). The experimental material was sown in a randomized block design (RBD) with three replications. The findings of the study emphasize the potential of utilizing both additive and non-additive gene effects in wheat improvement programs. The identified superior parental lines and cross combinations can be effectively utilized in future breeding strategies aimed at enhancing productivity and adaptability in bread wheat.