Some management practices, like irrigation, can
contribute to the increase of grain yield under water stress
conditions, thus the development of tolerant cultivars
becomes an efficient and economical production strategy
[6, 13]. Indeed, drought tolerance implies the ability to
sustain reasonable yields under moderate water stress
and not the ability to survive over prolonged and severe
water stress periods [13, 14]. Water stress has been
reported to reduce the expression of many characteristics
in faba beans except days to flowering and moisture
retention in the leaf [14]. In common beans, accelerated
maturity of crop along with reducing grain yield and mean
weight of hundred seeds following water stress, have
been reported