Common bean (Phaseolus vulgaris L.) is considered
one of the most important grains for human alimentation
and is worldwide planted on approximately 26 million
hectares (www.faostat.fao.org). Common bean could be
grown as a seed legume in dryland rotations with winter
wheat to increase production diversity [1]. Although there
are reports that common bean is susceptible to drought
stress or water deficit, the production of this crop in many
places of the world is carried out under drought stress
conditions, due to insufficient water supply by rainfall
and/or irrigation