Determained effective of traits on yield of faba bean (Vicia faba L.) genotypes by path analyses

Faba bean (Vicia faba L.) is a major legume that is used as food owing to the high nutrient components in seeds. This study was carried out during 2015-16 growing season in Lorestan province, Iran. Experimental material comprised 26 accessions of faba bean. Field experiments were conducted in a randomized complete block design with three replications and 26 genotypes. Each plot consisted of four rows with 4 m long and distance between rows and plants were 0.50 m, respectively. The characters included dayes to germination, dayes to flowering, dayes to maturity, plant height, number of stems per plant, number of node per stem, number of seeds per pod, number of seeds per plant, hundred seed weight, pod length, dry seed yield, biological yield and harvest index were measured. The analysis of variance indicated significant differences between genotypes for all of the studied traits. Correlation analysis indicated there were positive correlation coefficients between seed yield and number of day to germination, number of day to flowering, plant height, number of pod per plant, number of node per stem, hundred seed weight, pod length, biological yield and harvest index. Path coefficient analysis indicated plant height (0.74), number of pod per plant (0.51), number of node per stem (0.11), number of seed per pod (0.20), hundred seed weight (0.34) and pod length (0.41) had positive direct effects on seed yield. Thus should be paid to traits such as plant height, number of pod per plant, number of node per stem and pod length for augmentation of seed yield.