Nitrogen Status of Wild and Cultured<i>Rhodiolarosea</i> L. Plants
Nitrogen Status of Rhodiolarosea L. plants in their natural habitat and field stands were studied. We found variability of total nitrogen content in plants from different habitats. The total nitrogen content in parts of plants declined as follows: leaves>stems>roots>caudex. Nitrogen from proteinogenic amino acids amounted to 52-73% of the total nitrogen content. Application of complex mineral fertilizers at dose N90P45K45 in field experiments led to increased of total nitrogen content in aboveground and underground plant parts. Leaves and stems accumulated high amounts of nitrate, while the roots and caudex accumulated proteinogenic amino acids.