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MORPHOLOGICAL-ANATOMICAL CHANGES OF VEGETATIVE ORGANS PINUS SYLVESTRIS L. UNDER MAN-MADE POLLUTION

Drozhzhina Veronika Nikolaevna  (Associate Professor, Candidate of Biological Sciences Voronezh State Pedagogical University, Voronezh, Russia )

In conditions of environmental pollution by emissions of man-made origin of various origins, there is a change in the quantitative and qualitative parameters of the vegetative organs of Pinus sylvestris L. There is a decrease in the growth of annual shoots, both in length and thickness, an increase in the number of needles, and the life expectancy of needles is shortened. Under the influence of pollutants, areas of the affected needles appear, drying is observed. The parameters of the needles are reduced, and changes in the resin-bearing system are observed. The number and diameter of resin passages are reduced, anomalies in their laying are noted: doubling of resin passages, necrotization of individual areas, filling with waste products, deepening of passages into the thickness of the mesophyll, underdevelopment of resin channels. The change in the length of the tissues forming the needles is most pronounced in a reduction in the area of the main vein and an increase in the area of the sclerenchyme.

Keywords:hypoderm, mesophyll, bifurcation, resin passages, needles, endoderm, epidermis, Pinus sylvestris L.

 

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Citation link:
Drozhzhina V. N. MORPHOLOGICAL-ANATOMICAL CHANGES OF VEGETATIVE ORGANS PINUS SYLVESTRIS L. UNDER MAN-MADE POLLUTION // Современная наука: актуальные проблемы теории и практики. Серия: Естественные и Технические Науки. -2025. -№02. -С. 7-11 DOI 10.37882/2223-2966.2025.02.12
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