Effect of selected elements of mineral nutrition deficit on accumulation of flavonoids in legume plantsfor an example of common beans

The effect of the exclusion of certain mineral elements on the qualitative and quantitative composition of flavonoids accumulated by leguminous plants is discussed. It is shown that the most important for the accumulation of flavonoids of legumes is nitrogen deficiency. Exclusion of this element from a mixture of mineral nutrition has led to an increase both in content of most of the studied flavonoids and in their antioxidant activity. The observed phenomena can be explained by the signal and protective role of flavonoids.