https://doi.org/10.37229/fsa.fjb.2026.05.29

The study was conducted under the conditions of Nineveh Governorate, Iraq, to ​​investigate the inheritance pattern of some growth and yield traits in three faba bean cultivars (Local, Franchi, and Aquladis) under the influence of three concentrations of the seaweed extract Stymulant (0, 4, and 8 ml/L) during the fall growing season of 2023/2024 at the College of Agriculture and Forestry, University of Mosul, as a factorial experiment with nine treatments in a completely randomized block design with three replications. Analysis of variance demonstrated that there were high differences between cultivars regarding the following traits number of pods per plant, seed weight, total seed number, percentage of pod-filling, 100-seed weight, pod-weight, and biomass. Local cultivar was much better than the other two cultivars when in terms of the number of pods per plant, seed weight, and 100-seed weight, whereas Aquladis was much better in terms of total seed number and percent pod-filled. The highest pod weight was observed in the Franchi cultivar, which was significantly superior only to Aquladis. Foliar application of Stymulant at a concentration of 8 ml/L was significantly superior to other concentrations for the traits of number of pods per plant and pod weight. The highest pod weight was recorded in plants of the Aquladis cultivar treated with Stymulant at 8 ml/L. Genetic variance was significant in all except plant height, number of lateral branches, pod length, and total seed weight whereas the environmental and phenotypic variances was significant in all traits. The heritability values in the broad sense, and expected genetic gain per cent of the mean were high in the number of pods per plant and seed weight, total seed weight, percent pod-filling, 100-seed weight and biomass.  High heritability indicates that the phenotype of an individual is strongly related to its genotype, suggesting the possibility of directly improving these traits in subsequent growing seasons.