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Features of the nucleus and nucleoli in seedlings from mother Stankevich pine trees (Pinus brutia Var. Stankewiczii Sukacz.). with different heterozygosity levels

Korshikov I.I., Bilonozhko Yu.O., Milchevskaya Ya.G.

 




SUMMARY. The results of the analysis of the nucleus and nucleoli features in the seeds of Pinus brutia var. stankewiczii Sukacz under conditions of the marginal part of the distribution and recreational load area are presented. The polymorphism in the number of nucleoli and their size in the cells of seedlings from the south-eastern coast of the Crimea was found between P. brutia var. stankewiczii populations. An increase in the average area of nucleoli in the nucleus and a decrease in the nucleus-nucleolus ratio were observed for the population under the recreational pressure, which indicates higher functional activity of the genetic apparatus of cells in response to adverse conditions. The change of nucleus-nucleolus parameters depending on the level of heterozygosity of mother trees was shown. The plants with low heterozygosity tended to have larger nucleoli. The identified trends indicate the complex nature of changes in the cells of the seed progeny of P. brutia var. stankewiczii.

Key words: nucleus, nucleolus, level of heterozygosity, Pinus brutia var. stankewiczii Sukacz.

Tsitologiya i Genetika 2022, vol. 56, no. 2, pp. 14-20

  1. Donetsk Botanical Garden of the National Academy of Sciences of Ukraine, 50, Marshaka Str., Kryvyi Rih 50089 Ukraine
  2. Kryvyi Rih Botanical Garden of the National Academy of Sciences of Ukraine, 50, Marshaka Str., Kryvyi Rih 50089 Ukraine
  3. Institute of Food Biotechnology and Genomics of the National Academy of Sciences of Ukraine, 2a, Osypovskoho Str., Kyiv 04123 Ukraine

E-mail: tkacheva_ua ukr.net

Korshikov I.I., Bilonozhko Yu.O., Milchevskaya Ya.G. Features of the nucleus and nucleoli in seedlings from mother Stankevich pine trees (Pinus brutia Var. Stankewiczii Sukacz.). with different heterozygosity levels, Tsitol Genet., 2022, vol. 56, no. 2, pp. 14-20.

In "Cytology and Genetics":
I. I. Korshikov, Yu. O. Bilonozhko & Ya. G. Milchevskaya Peculiarities of NucleusNucleolus Indicators of Seed Progeny in Mother Stankevich Pine trees (Pinus brutia var. stankewiczii Sukacz.) Different in Levels of Heterozygosity, Cytol Genet., 2022, vol. 56, no. 2, pp. 118124
DOI: 10.3103/S0095452722020074


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