Physiological and Yield Responses of Green-Shelled Beans (Phaseolus vulgaris L.) Grown under Restricted Irrigation

Common bean is an important crop, consumed as green-shelled in several countries. In Chile, beans are cultivated often a dry land vulnerable to drought. The objective of this study was characterize the hydric and productive responses four genotypes subjected deficit irrigation order outline production strategies face increasing water scarcity. Two experiments were evaluated: one pot experiment with three treatments, supplying 100% crop evapotranspiration (ETc) (T100), 50% (T50), 30% (T30); open field two treatments: (I100) 40% ETc (I40). Treatments applied during reproductive stage determinate cultivars vegetative indeterminate plants. Severe restriction (T30 I40) both showed significant decrease stomatal conductances, well biomass number grains per pod; I40 treatment also reduction chlorophyll fluorescence. Water use efficiency (WUE) higher under stress (I40), but lower on T30 from experiment. Determinate 22.7% 100-seed weight compared type, and, thus, tolerance Our results indicate that severe highly harmful terms yield, moderate controlled plus may be strategy for producing successfully drought scenario.