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Peculiarities of Nucleus–Nucleolus Indicators of Seed Progeny in Mother Stankevich Pine trees (Pinus brutia var. stankewiczii Sukacz.) Different in Levels of Heterozygosity

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Abstract

Nucleus–nucleolus characteristics of Pinus brutia var. stankewiczii Sukacz. seeds were analyzed under conditions of the marginal part of the area and recreational load. Interpopulation polymorphism in the number of nucleoli and their size was detected in the cells of P. brutia var. stankewiczii seedlings from the southeastern coast of Crimea. For a population experiencing recreational load, an increase in the average area of nucleoli in the nucleus and a decrease in nucleus–nucleolus ratio was noted, which indicates an increase in the functional activity of the genetic apparatus of the cells in response to the effect of adverse conditions. A change in nucleus–nucleolus indicators depending on the level of heterozygosity of mother trees was demonstrated. An increase in the size of nucleoli was found for low-heterozygous plants. The identified trends indicate the complex nature of the changes in the cells of P. brutia var. stankewiczii seed progeny.

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Funding

This study was not funded by any grant from government financial institutions or the commercial or noncommercial sector.

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Authors and Affiliations

  1. Donetsk Botanical Garden, National Academy of Sciences of Ukraine, 50089, Kryvyi Rih, Ukraine

    I. I. Korshikov & Ya. G. Milchevskaya

  2. Kryvyi Rih Botanical Garden, National Academy of Sciences of Ukraine, 50089, Kryvyi Rih, Ukraine

    I. I. Korshikov

  3. Institute of Food Biotechnology and Genomics, National Academy of Sciences of Ukraine, 04123, Kyiv, Ukraine

    Yu. O. Bilonozhko

Authors
  1. I. I. Korshikov
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  2. Yu. O. Bilonozhko
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  3. Ya. G. Milchevskaya
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Correspondence to Yu. O. Bilonozhko.

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Translated by A. Barkhash

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Korshikov, I.I., Bilonozhko, Y.O. & Milchevskaya, Y.G. Peculiarities of Nucleus–Nucleolus Indicators of Seed Progeny in Mother Stankevich Pine trees (Pinus brutia var. stankewiczii Sukacz.) Different in Levels of Heterozygosity. Cytol. Genet. 56, 118–124 (2022). https://doi.org/10.3103/S0095452722020074

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