A.A.Khadim, M. Aslam, Abdullah, K. Fatima, F. Gul, A. Sattar Maize, hybrid, correlation , yield, heritability 30-43 10 (1) January 2026 Maize (Zea mays L.) is a globally important cereal crop valued for food, feed and industrial applications. Enhancing grain yield requires a clear understanding of genetic variability and the interrelationships among yield-contributing traits. The present study was conducted to assess genetic variability, heritability and trait associations in fifteen maize hybrids grown under normal field conditions during the spring season of 2024 at the University of Agriculture, Faisalabad. The experiment was laid out in a randomized complete block design with three replications. Analysis of variance revealed highly significant differences among genotypes for all studied morphological and yield-related traits, indicating the presence of considerable genetic variation. High broad-sense heritability was observed for plant height, tassel length, number of tassel branches and 100-seed weight, suggesting that these traits are predominantly governed by genetic factors and can be effectively improved through selection. In addition, high heritability coupled with moderate to high genetic advance for these traits indicates the predominance of additive gene action, making them reliable selection criteria in breeding programs. Correlation analysis indicated strong positive associations among key yield components, particularly between seeds per row, seeds per cob and rows per cob, highlighting their collective contribution to grain yield. Path coefficient analysis further demonstrated that number of tassel branches, seeds per row and rows per cob exerted substantial direct effects on grain yield, emphasizing their importance as primary selection indices. Furthermore, the presence of substantial phenotypic and genotypic coefficients of variation for several traits suggests ample scope for genetic improvement through hybridization and selection. The study also underscores the importance of indirect selection strategies, where improvement in highly correlated traits can lead to enhanced grain yield and the traits can be effectively utilized under normal agro-climatic conditions for the development of high-yielding maize hybrid.