More drought-tolerant common bean genotypes for a range of farmer conditions, markets and preferences can only be developed on the basis of an integrated understanding of farmers' production conditions, existing seed system practices and different physiological processes that regulate drought tolerance in the plant. The results presented in this book would contribute to integrative breeding strategies that incorporate participatory, physiology and marker-aided selection to breed new varieties of drought-tolerant common bean that combine a range of mechanisms in farmers' preferred grain types.