ABSTRACT
The comparative ecophysiology of yield and environmental adaptation of grain legumes is discussed. Emphasis is placed on opportunities for enhancing yield potential and resistance to abiotic stresses through breeding-improved cultivars and developing management methods that complement the new cultivars. This work concentrates on bio tic stresses that interact with resistance to abiotic stresses and factors influencing yield potential. Symbiotic associations involving rhizobia and mycorrhizal fungi are particularly relevant to the function of grain legumes in cropping systems and are examined.
