In hybridization progromme for wheat improvement, it is important to select parents which are able to transfer useful genes. In this research, broad and narrow sence heritability values were estimated for 10 important yield related characters in three different crosses. In each cross, six basic generations consisting of P1, P2,F1,F2,Bcl and Bc2 were made. Each generation were sown in a different plot. Thirty plant per plot were selectcd in random and scored. Broad and narrow sence heritabilities were estimated using generation analysis of variance and calculating environmental, additive and dominance variances by Hayman,s 6-parameter model. The highest broad sence heritability value was 86.2% for seed yield / plant in the first cross and the lowest value was 14.6% for straw yield/plant in the second cross. The highest narrow sence heritability value was 57.3% for seed yield/Plant in the first cross and the lowest value was 3.4% for straw yield/plant in the secon-d cross.
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