Nine faba bean genotypes have been selected under different drought stress
conditions throughout faba bean breeding program at Fs generation. These genotypes
were evaluated comparing with the commercial cullivar Giza-461 at Fs generation for
the performance of yield and its components and genetically verify for drought
tolerance. The obtained results from the green house experiment indicated that
genotypes no.,4 , 5 and 7 gave the highest values for yield and its components.
Moreover, the biochemecal genelic results verify that the genotypes no.4,5,7.8 and 9
gave the highest values for isozyme activities, either for isozymes accompanied with
yield and its components or those associated with drought tolerance. Also, the results
of isozyme banding patterns showed thai genolypes no., 4 and 5 gave the highest
gene expression for the genes associated with both drought or yield and its
components. Generally, it could be concluded that genotypes no., 4 and 5 were the best
genotypes of faba bean breeding program. where gave the maximal productivity
under drought conditions.