DYNAMICS OF THE CONTENT OF CHLOROPHYLLS IN THE LEAVES OF THE ENGLISH OAK (QUERCUS ROBUR L.) OF THE FOREST-STEPPE ZONE
2021
Sautkina, M.Yu. (All-Russian Research Institute of Forest Genetics, Breedings and Biotechnology)
The article presents experimental data on the dynamics of the accumulation of photosynthetic pigments in the leaves of model trees of the English oak, which grows in the field-protective forest belts of the forest-steppe zone. It is shown that in 2020, the content of chlorophylls a and b in the leaves of model trees is minimal compared to the previous three years of research. It was revealed that the sum of the main photosynthetic pigments in the leaves of the oak trees of the control group growing on the plakor is 17.1% higher than the sum of the pigments of the trees of the experimental group growing on the slope, and is 4.735±0.188 mg / g a. d. m. It is proved that the content of chlorophylls a and b is an environmentally dependent feature that reflects the general vital state of plants, as well as changes that occur during growth, development and stress loads.
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