In this study, by using 6 different originated common wheat genotypes [Gonen(G1), Saraybosna(G 2), Koksal-2000(G3), Atilla-12(G4), 15-4(G5), 22-1(G6)], full diallel crosses were made. Plant height, spike length, spikelet number/spike, seed number/spike, seed weight/spike and 1000 kernel weight were investigated over F-1 plants and parents. It is found that mean squares of GCA and SCA were significant for all investigated traits whereas it is determined that resiprocal effect was non-significant for spike length and seed number/spike and statistically significant for other traits. GCA effects were determined to be significant for all the traits, except spike lenght, in Gonen wheat. When the SCA effects were examined, in G1xG3 hybrid, except plant height, significant and positive SCA effects were observed for the other traits. The highest narrow-sense heritability was found in plan height by 0.464 and the lowest in spike length by 0.003. The highest heterosis value was observed in G6xG3 hybrid by 82.54% in the seed number/spike, the lowest heterosis was in G5xG3 hybrid by - 28.31% in the trait of seed weight/spike in the study. The highest and the lowest heterobeltiosis values were obtained in the seed weight/spike by 54.01% and - 28.63%, respectively.