A group of G.hirsutum L.varieties and theirhybrids F_1 were studied on two fields withdifferent mineral supply conditions:optimalmineral supply and without fertilizers.Thereliable genotypic intraspecies polymorphism ofresponse to the different level of mineralnutrition was identified.An individual reaction A group of G.hirsutum L.varieties and theirhybrids F_1 were studied on two fields with different mineral supply conditions: optimalmineral supply and without fertilizers. There is a genotypic intraspecies polymorphism of response to the different level of mineral nutrition was identified. An individual reaction