2020,    № 3 (41)    

ECOLOGY




Dubrovina O.A., Zubkova T.V.

The content of the pigment Fund in annual conifers of prickly spruce (Picea pungens) and Western thuja (Thuja occidentalis) growing in different functional zones of Yelets

Woody plants can act as a bioindicator of the environment. Coniferous species are the most informative in this regard. To study the dynamics of growth and development in the urban environment of the city of Yelets were selected plantings of blue spruce and arborvitae of the West that grows in different pollution conditions. The selected types of conifers are widely used in creating artificial plantings, and are widely used in landscaping and landscape architecture of the city of yeltsa. Study of the content of pigments (chlorophylls a, b and carotenoids) in the annual coniferous spruce (P. pungens) and Western thuja (T. occidentalis) was determined in extracts using spectrophotometric analysis. As a result of the research, species differences in the content of photosynthetic pigments in the coniferous spruce (P. pungens) and Western thuja (T. occidentalis) during the growing season. In the spring period, with an increase in temperature, the activity of the photosynthetic active radiation is resumed, and species differences in the amount of pigments are determined. With the beginning of the growth of needles, the amount of pigments in may led prickly spruce (P. pungens) (0.486 mg / g) > Western thuja (T. occidentalis) (0.435 mg/g). In 2019, in the annual coniferous spruce (P. pungens) and Western thuja (T. occidentalis) in the study areas there is a fairly uniform increase in the content of chlorophyll, with a maximum accumulation in July. Analysis of the obtained data indicates high adaptive resources of the photosynthetic apparatus of prickly spruce (P. pungens) and Western thuja (T. occidentalis) in relation to the pollution conditions of the city of Yelets

Keywords:PRICKLY SPRUCE, WESTERN THUJA, CHLOROPHYLLS, CAROTENOIDS, ADAPTIVE REACTION