Division De Estudios De Posgrado, Facultad De Ciencias Biologicas, Universidad Autonoma De Nuevo Leon, Apartado Postal F-16, San Nicolas de los Gazra, N.L. CP 66450.
The protein profiles of four bean cultivars tolerant-Flor de mayo and Laguna; and susceptible garbancillo and pinamerpa to low nutrient medium were determined with the help of polyacrilarnide gel electrophoresis. The results obtained showed that a specific protein of 48 kDa was present in higher concentrations in tolerant cultivars.