FEATURES OF THE CONTENT OF PHOTOSYNTHETIC PIGMENTS IN THE LEAVES OF FRAXINUS EXCELSIOR L
The article presents the results of the physiological and biochemical analysis of the content of photosynthetic pigments in the leaves of common ash trees in the forest-steppe zone of the Central Chernozem region. It is shown that the content of chlorophyll a varies from 1.35 to 6.10 mg/g a.d.m. with an average value of 3.672±0.764 mg/g a.d.m. The range of variability of the sum of photosynthetic pigments is in the range of values from 4.44 to 8.89 mg/g a.d.m.It is noted that the content of photosynthetic pigments is an indicator of the biological characteristics of the species and most accurately reflects the production process, as well as the reaction of the plant to the growing conditions.