Abstract
Morphological and anatomical features of the leaves and roots of Taraxacum officinale Wigg., growing under the conditions of the rocky dump of the Kedrovsky coal mine of the Kemerovo region, were studied. It was revealed that the specific environmental conditions of the dump cause morphological and anatomical changes in the leaves and roots of the dandelion. At the level of morphology, a decrease in the average leaf area, a thickening of leaf blades, a tendency to decrease the number of leaves in the rosette, a significant decrease in the mass and length of the roots. At the level of the anatomical structure of the leaves, there is a significant increase in the thickness of the mesophyll, a tendency to decrease the thickness of the tissues of the upper and lower epidermis, a decrease in the number of cells in 1 mm 2 and an increase in the size of stomata in the tissues of the lower and upper epidermis, a decrease in the number of stomata by 1 mm 2 and a stomatal index on the upper epidermis. At the level of the anatomical structure of the roots, the radius of the root decreases, the radius of the cortex and phloem, the diameter of the xylem.
Highlights
As a result of coal mining, the area of disturbed land in Kuzbass is more than 100 thousand hectares
As a result of the open method of coal mining, the emerging rock dumps are characterized by specific ecological conditions – a lack of productive moisture, failed water permeability, a contrasting temperature regime on different relief elements; low potential fertility of embriozems, they are a classical object for studying the adaptive mechanisms of plants planted on them
The aim of the work is to study adaptive rearrangements at the morphological and anatomical level in Taraxacum officinale Wigg., which grows in conditions of the rocky dump of the Kedrovsky coal mine
Summary
As a result of coal mining, the area of disturbed land in Kuzbass is more than 100 thousand hectares. As a result of the open method of coal mining, the emerging rock dumps are characterized by specific ecological conditions – a lack of productive moisture, failed water permeability, a contrasting temperature regime on different relief elements; low potential fertility of embriozems, they are a classical object for studying the adaptive mechanisms of plants planted on them. A high degree of resistance of some species of higher plants is provided by a combination of morphological, physiological, anatomical adaptive reactions, which makes these plants potentially capable of improving the quality of the natural environment – urban areas, industrial zones and technogenically disturbed lands. The aim of the work is to study adaptive rearrangements at the morphological and anatomical level in Taraxacum officinale Wigg., which grows in conditions of the rocky dump of the Kedrovsky coal mine
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