Eight-durum wheat genotypes Triticum trugidum var. durum, of wide ecogeographic origin were used in this study, namely, Carcomun, Cmh80, Chahba 88, Belikh 1, Sohag 1, Sohag 2, Sohag 3 and Bani-Sweif 1. These genotypes were crossed in all possible combinations. The parental genotypes, F1 hybrids and F2 populations were grown in a completely randomized block design with three replicates. The results revealed that the inheritance of morphological traits i.e., days to heading, days to anthesis, days to maturity, plant height, and spike length were mainly controlled by additive and non-additive gene effects. The magnitudes of the dominance components were smaller than those of additive ones, resulting in (Hl/D) 1/2 less than one and confirming the presence of partial dominance for these characters in the F1 and F2 generations except plant height in the F1 and F2 and maturity date in the F2. The parents have more recessive alleles for all traits both generations except spike length in the F1, indicating that decreasing alleles were more frequent in the genetic constitution of the parental genotypes. Heritability estimates were high in broad and narrow-sense for days to heading, days to anthesis, and spike length for both F1 and F2 generations, while were moderate in narrow sense for days to maturity, and plant height in the F1 hybrids and moderate in broad sense for days to maturity. It could be useful to select early heading lines from segregates involved in t he combinations of Sohag1 Cmh80 and Sohag 2.