To improve yearlings and high potential yield of faba bean. Six populations P₁, P₂,  F₁, F₂, BC₁ and BC₂ produced from three faba bean crosses , namely (Giza 429 x Giza 674), (Masr 1 x Giza 674) and (Giza 40 x Giza 402) ) were conducted during three successive winter seasons 2013/14, 2014/15 and 2015/16.  The experiment was conducted at the Experimental Farm., Faculty of Agricultural, Al-AzharUniversity (Assiut Branch). Recorded six generations mean days to maturity, branches number, number of pods, plant height per plant, 100 seed weight and seed yield per plant were exposed to upgrade test, and six abistatic detection method parameters and estimates of m, d, h, I, j and l parameters. The epistasis genes effects were reveal by the results that cannot be ignored when creating new program of breeding to expand faba bean inhabitants of economic traits. And controls inherit all attributes and non-additive gene effects study added, with a value greater than the influence of genes dominate one in most cases. Among other elements added impact can be solved, i.e. , stabilizer × additive (I) interaction type and was also great and form the chief part of  the effects of gene. (H) and (l) the consultation if days to maturity in two crosses, crosses the plant height in three, number one, cross sections and reflects the pods number / plant, 100 seed weight in three crosses and seed yield / plant in two crosses, indicating the duplicate type of interaction is allelic in these qualities. Accidentally discovered a sign and magnitude.