Effect of amino acids on productivity and phenolic content in common chicory leaves
https://doi.org/10.18619/2072-9146-2026-1-38-43
Abstract
Relevance. Biostimulants based on different compounds is increasingly used in agriculture due to the need to increase plant yield under unstable climate conditions. Exogenous application with amino acids on various agricultural crops increased productivity, the content of biologically active compounds, and improved their resistance to abiotic stress. Common chicory is a promising medicinal plant for obtaining pharmaceutical substances with a high content of chicory acid. Due to the content of various classes of phenolic compounds in the leaves, extracts from the aboveground part of chicory have an immunomodulatory and hepatoprotective effect.
Methods. In this study, the effect of foliar application with single-component solutions of phenylalanine, tyrosine, and tryptophan at two concentrations (10 mg/L and 25 mg/L) on plant productivity and the content of phenolic compounds in the leaves of common chicory is assessed. Results. Treatment with amino acids at a concentration of 10 mg/L was most effective. The use of tryptophan increased the productivity of the aboveground part by 29-57% depending on concentration (from 112 g to 144-176 g). Treatment with all amino acids contributed to increase the phenolic compounds content: phenylalanine – from 4.84% to 5.49%, tyrosine – up to 7.25%, tryptophan – up to 6.23%. Amino acids application did not have a significant effect on the root weight. It was noted that under favorable climate conditions for plant development, the use of amino acids is more effective, but under unfavorable conditions, there is no significant decrease in plant indicators.
Results. Treatment with amino acids at a concentration of 10 mg/L was most effective. The use of tryptophan increased the productivity of the aboveground part by 29-57% depending on concentration (from 112 g to 144-176 g). Treatment with all amino acids contributed to increase the phenolic compounds content: phenylalanine – from 4.84% to 5.49%, tyrosine – up to 7.25%, tryptophan – up to 6.23%. Amino acids application did not have a significant effect on the root weight. It was noted that under favorable climate conditions for plant development, the use of amino acids is more effective, but under unfavorable conditions, there is no significant decrease in plant indicators. Results indicate the prospects of using amino acids as an element of agricultural practices to increase plant productivity and the content of biologically active substances.
About the Author
P. O. Mavrina
All-Russian Scientific Research Institute of Medicinal and Aromatic Plants
Russian Federation
Russian Federation
Polina O. Mavrina – Junior Researcher, Department of Chemistry and Technology of Natural Compounds
7, Greena st., Moscow, 117216
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For citations:
Mavrina P.O. Effect of amino acids on productivity and phenolic content in common chicory leaves. Vegetable crops of Russia. 2026;(1):38-43. (In Russ.) https://doi.org/10.18619/2072-9146-2026-1-38-43
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