This research was carried out on 13 durum wheat genotypes in randomized complete block design with four replications between 1993-95 years, in Kahramanmaras-Turkey. The aim of this research was to determine direct and indirect effects of traits (vegetative period-VP, grain filling period-GFP, grain filling rate-GFR, flag leaf area-FLA and duration-FLAD, head number-HN, grain number per head-GN/H and 1000-grain weight-GW on grain yield-GY. According to the correlation coefficients, GY was positively and significantly related with GN/H and GFP. Path coefficients indicated that GN/H, GFP, GFR and FLAD had positive and high direct effects, GW had moderate positive direct effect -on GY, whi'e FLA had negative and high direct effect on GY. Therefore, GFP. GFR, FLAD, GN/H and GW can be used as selection criteria in region to increase grain yield.