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Sivolapov A. I., Politov D. V., Mashkina O. S., Belokon M. M., Sivolapov V. A., Belokon Yu. S., Tabatskaya T. M. Cytological, Molecular-Genetic and Silvicultural-Selection Research of Polyploid Poplars

polyploids, the number of chromosomes, DNA analysis, poplar, aspen, productivity of poplar cultures


How to cite: Sivolapov A. I.1, Politov D. V.2, Mashkina O. S.3, Belokon M. M.2, Sivolapov V. A.4, Belokon Yu. S.2, Tabatskaya T. M.5 Cytological, molecular-genetic and silvicultural-selection research of polyploid poplars // Sibirskij Lesnoj Zurnal (Siberian Journal of Forest Science). 2014. N. 4: 50–58 (in Russian with English abstract).

© Sivolapov A. I., Politov D. V., Mashkina O. S., Belokon M. M., Sivolapov V. A., Belokon Yu. S., Tabatskaya T. M., 2014  

The author of the article – Alexey I. Sivolapov, in 1976 selected two forms of gray poplar (Populus canescens Sm.) on floodplains of the Khoper and the Don rivers, registered for the first time in Russia as varieties and recommended for industrial cultivation. Allotriploid gray poplar Khopersky 1 in test cultures, 26 years old, has a stock of 715 m3/ha on degraded black soils in the Semiluksky nursery. As a result of further comprehensive studies, it has been found that these forms are mixoploids with the presence of triploid cells of 60–70 % in somatic tissue, the value of which is a combination of high productivity, with adaptability to different environmental conditions, and they have high technical properties of wood. The presence of triploid cells was established with the help of cytology and genetic certification on separate, specially selected microsatellite loci. Mathematical treatment of dendrometric indicators of poplar varieties has confirmed a significant effect of genotype on poplars’ growth in diameter and height. Triploid poplars do not bear fruit, and breed by cuttings with difficulty, or do not breed at all; they breed well only with the help of biotechnology in vitro. This technology holds great promise, both abroad and in Russia, with the aim of breeding commercially valuable forms and varieties of woody plants and creation of targeted forest plantations with prescribed properties of wood. In the future, relevant issues for further research are identification and examination of markers-loci responsible for the individual economically valuable features of wood, which is possible using the methods of molecular genetic analysis.

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