Conocimiento campesino en la selección de variedades de haba (vicia faba l.) en la Sierra Norte de puebla México

cold resistance (81%), plant health (76%), and precocity (55%); and in relation to grain aspect, grain health (93%), and grain health and size (55%). The peasants selecting four or more characters of the beans, in relation to the environment, plant and seed, contrib- uted more to the improvement of the species, as they integrated more knowledge and exerted higher selective