Aliyu Usman Ibrahim, B. Yadav, Anusha Raj, Auwal Ibrahim Magashi Durum wheat, GCV, PCV, heritability, genetic gain, heterosis 2-8 4 (1) 2020 January, 2020 The present investigation was undertaken at the Department of Genetics and Plant Breeding, Sam Higginbottom university of Agriculture, Technology and Sciences SHUATS, Allahabad during Rabi 2015-2016 in RBD with three replications. Mean performance for grain yield and its components depicted that F₁ (HI-8653 x AKDW-2997) was found superior. Higher phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were observed for character effective tillers per plant. A close perusal of heritability depicted that high heritability (>60%) was observed for plant height, days to maturity, effective tillers per plant, test weight, days to heading, days to 50% flowering, flag leaf length, grain yield per plant and grain filling period. The highest estimates of genetic gain were exhibited by effective tillers per plant. Estimates of heterosis (H_a) showed that the highest average heterosis for seed yield per plant was observed for F₁ (HI-8653 x AKDW-2997). The highest heterobeltiosis (H_b) value for seed yield per plant was depicted for F₁ (HI-8653 x AKDW-2997). A perusal of estimates of economic (H_c) heterosis revealed that the highest economic heterosis value for seed yield was observed for F₁ (HI-8653 x AKDW-2997). Estimate of heterosis (H_a) showed that the lowest average heterosis for days to maturity was observed for F₁ (RAJ-6560 x PDW-300). The lowest heterobeltiosis (H_b) value for days to maturity was depicted for F₁ (RAJ-6560 x PDW-300). A perusal of estimates of economic (H_c) heterosis revealed that the highest economic heterosis value for days to maturity was observed for F₁ (NIDW-295 x PDW-300). These crosses can be advanced to obtain desirable transgressive segregants in durum wheat.