Affiliation:
1. KI ofthe FPS ofRussia
2. InEkA-Consulting LLC; Kuzbass Humanitarian
Pedagogical Institute of the Kemerovo State University
Abstract
The wide distribution of Populus × sibirica G.V. Krylov & G.V. Grig.
ex A.K. Skvortsov in the Siberian region led to its numerous contacts with
plantations of P. nigra L. and the facts of anthropogenic hybridization occurring both in disturbed (ruderal) and natural (floodplain) habitats. Hybrids
growing in these territories are distinguished by a significant phenotypic
diversity, which makes their identification quite difficult. The aim of this
work was to study the anthropogenic hybridization of Populus × sibirica
with P. nigra in natural habitats. At the same time, the following tasks were
solved: to identify diagnostic morphological features of hybrids; peculiarities
of variability of traits in the leaves of the studied taxa; to identify the influence
of environmental conditions on the phenotypic diversity of hybrid populations.
To achieve the set goals and objectives, 30 reproductively mature trees
of P. × sibirica, P. nigra and their hybrids were examined at the mouth
of the Biya River and in the city of Biysk (Altai Territory). When analyzing
the qualitative features, the following morphological markers were chosen:
the shape of the leaf blade, its apex and base, the presence of basal glands,
and petiole pubescence. The most important morphological features that
make it possible to identify hybrids are the differentiation of short crown
shoots and the presence of basal glands. The phenotypic diversity of P. nigra
and P. × sibirica plantations is not high, and its growth is observed in hybrids
under these conditions. The observed anthropogenic hybridization in natural
habitats is asymmetric, which, like the phenotypic composition of hybrid
populations, is determined by the action of stabilizing selection.
Publisher
Federal State Budgetary Educational Institution of Higher Education «Moscow Pedagogical State University» (MPGU)
Reference23 articles.
1. Maiorov S.R., Bochkin V.D., Nasimovich Yu.A., Shcherbakov A.V. Adventivnaya flora Moskvy i Moskovskoi oblasti Adventivnaya flora Moskvy i Moskovskoy oblasti. Moscow, 2012.
2. Borzenkova T.G., Kostina M.V., Nasimovich Yu.A. Cultivated poplars (Populus, Salicaceae) of Khabarovsk. Environment and Human: Ecological Studies. 2022. Vol. 12. No. 1. Рр. 9–21. (In Rus.) DOI: 10.31862/2500-2961-2022-12-1-9-21
3. Klimov A.V., Proshkin B.V. Morphotypic diversity in populations of Populus nigra L., P. laurifolia Ledeb. and P. × jrtyschensis Ch.Y. Yang. in the zone of natural hybridization. Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya = Tomsk State University Journal of Biology. 2017. No. 39. Pp. 58–72. (In Rus.)
4. Klimov A.V., Proshkin B.V., Andreeva Z.V. Hybridization of species of the genus Populus L. sections Aigeiros Lunell and Tacamahaca Mill. Bulletin of NSAU. 2018. No. 1. Pp. 16–34. (In Rus.)
5. Klimov A.V., Proshkin B.V. The use of morpho-anatomical features to identify hybrid plants in the zone of natural hybridization of Populus laurifolia and P. nigra in Siberia, Russia. Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya = Tomsk State University Journal of Biology. 2019. No 46. Pp. 64–81. (In Rus.)
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