Biometric indicators, degree of quality and viability of high juniper pollen (Juniperus excels M. Bieb.) in the conditions of the Crimean Mountains
Olesya O. Korenkova, Candidate of Biological Sciences, Associate Professor
Moscow State University Of Civil Engineering (National Research University), Moscow, Russia, o.o.korenkova@mail.ru, https://orcid.org/0000-0001-6482-7312
Abstract
The formation of the male generative sphere is one of the most important stages of the reproductive cycle. On average, the diameter of pollen grains of J. excelsa in the Crimean Mountains is 28.70±0.72 µm. Among the leading factors influencing the development of pollen, one can highlight the climatic conditions and the height of the growing areas above sea level (the strength of their influence is 11.78% and 12.52%, respectively). The proportion of colored J. excelsa pollen in the Crimean Mountains varies from 20.21±1.99 to 84.10±3.74%, which is 2—8 times more than the number of actually viable pollen grains. On average, only 16.28±1.07% belong to the number of sprouted pollen grains. Among the main factors influencing the actual viability of J. excelsa pollen grains in the Crimean Mountains are the height of the growing areas above sea level, slope exposure and anthropogenic impact. The degree of anthropogenic impact on the development of the male generative sphere of J. excelsa in the Crimean Mountains is noticeable. In the most disturbed areas the proportion of sprouted pollen is on average 1.7 times less than in specially protected natural areas.
Korenkova O. O. Biometric indicators, degree of quality and viability of high juniper pollen (Juniperus excels M. Bieb.) in the conditions of the Crimean Mountains. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2024, no. 1 (49), pp. 32—45. DOI: https://doi.org/10.32516/2303-9922.2024.49.3.
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