10.24411/1728-323X-2018-16012

Ecology

THE INFLUENCE OF ENVIRONMENTAL CONDITIONS OF THE URBAN ENVIRONMENT ON THE QUALITY OF SEEDS AND MORPHOLOGICAL INDICATORS OF THE BIRCH LEAF BLADE OF BETULA PENDULA ROTH.

1. V.Yu. Soldatova, Ph. D. (Biology), North-Eastern Federal University, 58 Belinsky str, This email address is being protected from spambots. You need JavaScript enabled to view it.,
2. Yakutsk, the Republic of Sakha (Yakutia), Russia, 677027,
3. A.P. Samsonova, North-Eastern Federal University, 58 Belinsky str., This email address is being protected from spambots. You need JavaScript enabled to view it.,
4. Yakutsk, the Republic of Sakha (Yakutia), Russia, 677027.

The evaluation of the quality and morphological indicators of seeds and leaves of Betula pendula Roth in the territory of Yakutsk. For the research 1088 leaves and 93 catkins were collected from 11 plots, located in four ecological zones of the city. The decrease in the quality of seeds results in the decrease in its mass, germination energy and seed germination in the territory of the city in comparison with the recreational zone. The indicator of fluctuating asymmetry (FA) varied in the range of 0.042—0.053, which corresponds to the quality of the medium from conventionally normal to significant deviations. The most safely condition of birches in the recreational zone of the city. Poor FA indicators are characteristic of the birch trees growing in the central and northern part of the city, where there is an intensive traffic flow and large industrial facilities are located. In general, we can note a statistically significant negative correlation between the value of FA (reflecting a violation of developmental stability) and seed quality indicators. The minimum average number of seeds (199.5) is observed in the recreational zone, and the maximum number (317.6) in the industrial one. Poor seed quality indicators may be compensated by an increase in the quantity of seeds, this fact indicates the consistency of the organism’s reactions to the environmental pollution.

fluctuating asymmetry, developmental stability, environmental quality, urban areas, bioassay, germination energy, seed germination.

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