Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


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Language: 
Russian
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Article type: 
Article
UDC: 
504.064

Investigation of Chlorophyll Fluorescence Parameters and Fluctuating Asymmetry of Leaves of Woody Plant – Quercus castaneifolia C. A. Mey. in the City of Baku, Azerbaijan

Autors: 
Mamedova Roza N., Бакинский государственный университет
Abstract: 

The article presents the results of the study of morphometric and physiological parameters of the leaves of the woody plant-chestnut oak (Quercus castaneifolia S. A. Mey.). The study was conducted in Baku, which is the capital of the Republic of Azerbaijan, to assess the bioindicative properties and prospects of using this plant in environmental monitoring and landscaping of the city. To conduct a comparative analysis of the results, leaf samples were collected in the areas of the city that differ in the degree of environmental pollution. Morphometric parameters were investigated by the method of fluctuating asymmetry of bilateral morphological signs of leaves. It was found that the increase in the level of anthropogenic pollution leads to an increase in the value of the fluctuating asymmetry of chestnut oak leaves. In parallel with the morphological parameters, the functional activity of photosystem II of the leaf photosynthetic apparatus was studied based on the analysis of the parameters of the induction curves of the millisecond delayed fluorescence component of chlorophyll a. The intensities of phases were compared, as well as the ratio of the phase intensity of the millisecond delayed fluorescence component of chlorophyll a to the intensity of the stationary level. The variation of these parameters depending on the different degrees of technogenic load on the plants’s growing environment. Under environmental risk, both the fast and slow phases are suppressed and the efficiency of photosynthesis is reduced. Based on the obtained results, it was concluded that chestnut oak can be used as a monitor plant for rapid diagnosis of environmental quality, as the studied morpho-physiological parameters are sensitive to environmental stress.

Reference: 

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