Likhanov A. Anomalous variability of plants under conditions of technogenic ecosystems of Donbass.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0404U001404

Thesis Registration Form

0404U001404.pdf

Applicant for

Specialization

  • 03.00.16 - Екологія

25-02-2004

Specialized Academic Board

Д 08.051.04

Oles Honchar Dnipro National University

Essay

Object - flower plant with tags of anomalous variability. The aim is to fixing of the main types of morphological anomalies of flower plant, to defining their influencing on ecophysiology function and to defining of their value during acclimatization. Methods - ecological-morphological, ecological-anatomical and ecophysiologycal. The thesis is devoted to studying the anomalous variability of plants under conditions of technogenic ecosystems of Donbass. In a period from 1999 to 2003 morphological anomalies have been revealed in 115 types of flower plants. It has been determined that in Donbass the main reason for the appearance of plants morphoses is a complex influence of anthropogenic and natural-climatic factors. It has been ascertained that factors teratogeneity is intensified during drought, under conditions of high or low temperatures. Inverse dependency has been revealed between precipitation amount in the period of flowers formation of Armeniaca vulgaris L. and between frequency of anomalous flowers occurrence: when precipitation amount increases 2 times, the amount of anomalous flowers decreases in 1,7 times. On the basis of plural correlation analysis it was proved that flowers teratogenesis of Armeniaca vulgaris is accompanied by the weakening of interconnection morphological features and by transformation peculiar to the given type of correlations pleiades. It has been detected that morphogenesis of leaves is more sensitive to technogenic contamination than morphogenesis of flowers. Under conditions of industrial zones, the frequency of anomalous leaves occurrence increases up to 10-25 %. Xeromorphic features are intensified in plants with anomalous construction of vegetative organs. On the grounds of the morpho-functional criterion it is proposed to distinguish three types of anomalies in the structure of vegetative and generative plant organs: neutral, negative (destructive) and positive (adaptational). Sphere - training courses, phytoindication.

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