Diversity of the hybrid forms between Siberian stone pine and Siberian dwarf pine

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  • G. V. Vsilyeva Institute of monitoring of climatic and ecological systems SB RAS Email: galina_biology@mail.ru
Keywords: Habitus, hybridization, hybrids life form, Pinus sibirica, Pinus pumila

Abstract

Siberian stone pine (Pinus sibirica) and Siberian dwarf pine (P. pumila) are Russian five-needle pines withdifferent life forms, namely upright tree and prostrate tree, respectively. Hybridization of the species was considered in thepaper from the point of view of the habitus of their natural hybrids. In early studies, it was always noted that the hybridswere intermediate in comparison with the parental species. Crown structure in hybrids are largely determined by twomain factors. These are deflection of the tree stem from the vertical axis and the selectivity of apical dominance. Hybridsgrowing in open places under full lighting conditions are characterized by strictly intermediate growth form. In a forestwhere there is no enough light, hybrid reaches for sun but gradually deviates to the side, which ultimately leads to a branchbreak or even the roots of the entire tree being upturned from the soil. In the mountains, hybrids can form uniform trunkbranches, forming a cup-shaped crown, similar to how it happens in Siberian dwarf pine. Thus, the previously notedintermediate morphology of hybrids represents a series of forms, from almost vertical multi-stemmed trees to pumila-likeones with a cup-shaped crown.

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References

Авров Ф. Д. Скрещиваемость различных видов лиственницы на коллекционно-маточной плантации в Сибири // Лесоведение, 1982. – № 5. – С. 23–30.

Галазий Г. И. Вертикальный предел древесной растительности в горах Восточной Сибири и его динамика // Тр. Ботан. ин-та им. В. Л. Комарова АН СССР. Серия 3 (Геоботаника), 1954. – Вып. 9. – С. 210-329.

Горошкевич С. Н. О возможности естественной гибридизации Pinus sibirica и Pinus pumila (Pinaceae) в Прибайкалье // Бот. журн., 1999. – Т. 84, № 9. – С. 48–57.

Горошкевич С. Н., Васильева Г. В., Попов А. Г.О гибридизации кедра сибирского и кедрового стланика в западной части Станового нагорья // Лесное хозяйство, 2008. – № 6. – С. 25–27.

Коропачинский И. Ю. Ботанико-географические и лесоводственные аспекты естественно гибридизации древесных растений // Лесоведение, 1992. – № 2. – С. 3–10.

Коропачинский И. Ю., Милютин Л. И. Естественная гибридизация древесных растений. – Новосибирск: Гео,2006. – 223 с.

Моложников В. Н. Кедровый стланик горных ландшафтов Северного Прибайкалья. – М.: Наука, 1975. – 203 с.

Поздняков Л. К. Древовидная форма кедрового стланца // Бот. журн., 1952. – Т. 37, № 5. – С. 688–691.

Серебряков И. Г. Экологическая морфология растений. Жизненные формы покрытосеменных и хвойных. – М.: Высшая школа, 1962. – 378 с.

Goroshkevich S. N., Popov A. G., Vasilieva G. V. Ecological and morphological studies in the hybrid zone between Pinus sibirica and Pinus pumila // Annals of Forest Research, 2008. – Vol. 51. – P. 43 -52.

Vasilyeva G., Bondar A., Goroshkevich S. What does a mixed population of Pinus sibirica and P. pumila from the southern Baikal region suggest about the structure of their hybrid zone? // European Journal of Forest Research, 2020. –Vol. 139. – P. 311–319.

Vasilyeva G., Goroshkevich S. Artificial crosses and hybridization frequency in five-needle pines // Dendrobiology,2018. – Vol. 80. – P. 123–130.
Published
2021-09-14
How to Cite
Vsilyeva G. V. Diversity of the hybrid forms between Siberian stone pine and Siberian dwarf pine // Проблемы ботаники Южной Сибири и Монголии, 2021. Vol. 20, № 1. P. 92-96 DOI: 10.14258/pbssm.2021019. URL: http://journal.asu.ru/bpssm/article/view/pbssm.2021019.