scholarly journals Ontogeny of Siberian Stone Pine (Pinus Sibirica du Tour) in Southeastern West Siberian Plain

2011 ◽  
Vol 4 (1) ◽  
pp. 3-22 ◽  
Author(s):  
Nikolaeva Svetlana A. ◽  
◽  
Velisevich Svetlana N. ◽  
Savchuk Dmitry A. ◽  
◽  
...  
Keyword(s):  
West Siberian Plain ◽  
Pinus Sibirica ◽  
Stone Pine ◽  
Siberian Stone Pine ◽  
Siberian Stone ◽  
Pinus Sibirica Du Tour

scholarly journals Genetic structure and postglacial recolonization of Pinus sibirica Du Tour in the West Siberian Plain, inferred from nuclear microsatellite markers

2021 ◽  
Vol 70 (1) ◽  
pp. 99-107
Author(s):  
D. N. Shuvaev ◽  
A. A. Ibe
Keyword(s):  
Western Siberia ◽  
West Siberian Plain ◽  
Pinus Sibirica ◽  
Ural Mountains ◽  
Stone Pine ◽  
The Urals ◽  
Siberian Stone Pine ◽  
Siberian Stone ◽  
Nuclear Microsatellite ◽  
Pinus Sibirica Du Tour

Abstract The total of 257 trees from the ten natural Siberian stone pine populations of West Siberian Plain, Ural Mountains and Kuznetsk Alatau were studied with the eight nuclear microsatellite loci. Differentiation of population groups indicates the possible existence of separate refugia in the past in the Urals and Kuznetsk Alatau. The northern populations of Western Siberia were characterized by a reduced level of genetic diversity, which could be a consequence of the founder effect in the process of P. sibirica migration from the southern regions of Western Siberia and the Urals since the end of the last glacial maximum. The genetic variability distribution among populations shows the uneven dynamics of Siberian stone pine migration from the zones of supposed refugia. The map of the proposed ways of Siberian stone pine migration from the zones of possible refugia was constructed, and it is in a good agreement with the results of palynological investigations.

scholarly journals Weather Conditionality of Siberian Stone Pine (Pinus sibirica Du Tour) Seeding

2021 ◽  
pp. 56-69
Author(s):  
Sergei Goroshkevich ◽  
Keyword(s):  
Negative Impact ◽  
Stand Age ◽  
West Siberian Plain ◽  
Pinus Sibirica ◽  
Stone Pine ◽  
Ray Method ◽  
Siberian Stone Pine ◽  
Siberian Stone ◽  
X Ray ◽  
Accumulated Temperature

The dynamics of Siberian stone pine sexual reproduction in the South-Eastern part of the West Siberian Plain was studied by 13-year stationary observations. The stand age was 160–180 years, the average tree height was 22 m, and the average diameter of the trunk at breast height was 53 cm. On average, 50–60 trees were analyzed annually (in different years from 25 to 100). Cones were counted and samples were collected annually from August 10 to August 20. The resercher (usually the author of this paper) climbed each tree, knocked down the cones with operating tools (a bat and a rod), and then their number was counted on the ground. A sample of 10–15 cones was taken from each tree. Afterwards, a complete morphological analysis was performed: the number of sterile and fertile scales, and underdeveloped and developed seeds were counted. Developed seeds were analyzed by the X-ray method. To determine the weight, only perfectly full seeds selected by the X-ray pattern were used. Information on weather conditions was used according to data from the Tomsk station of Roshydromet. The main factor in the cone initiation was the amount of precipitation during 2 years before the start of this process: with an increase in the amount of precipitation, the number of cones increases. However, the final seed productivity depends to a greater extent not on the number of initiated cones, but on the success of their further development. The most important stage in the cone development was spring in the year of pollination and the main negative factor was late frosts. The degree of their negative impact is determined by the sum of the effective (above 5 °C) mean daily temperatures at which the return of frost with temperature from –3 to –4 °C occurred. Complete abortion of cones occurred only when the sum of effective temperatures was 150–180 °C. The same frost at the accumulated temperature sum of 100–150 °C killed a significant part of the cones, and the rest strongly disrupted the development. When the sum of accumulated temperature was about 50 °C, a strong frost significantly increased the loss of seedbuds at all stages of their development, thereby reducing the number of full seeds. The average temperature of September in the pollination year was an important factor in seed production. The loss of seedbuds increased significantly with its increase. The only important trait that is formed in the year of cone maturity is the weight of full seeds: it increases with the amount of precipitation from April to June of the current year.

scholarly journals Genetic polymorphism in Siberian stone pine (Pinus sibirica Du Tour) populations from Ural and Altai-Sayan mountains

2020 ◽  
Vol 19 (2) ◽  
pp. 081-086
Author(s):  
Е. А. Petrova ◽  
Yu. S. Belokon
Keyword(s):  
Pinus Sibirica ◽  
Stone Pine ◽  
Ural Mountain ◽  
Siberian Stone Pine ◽  
Siberian Stone ◽  
The North ◽  
Total Genetic Diversity ◽  
South Siberia ◽  
Pinus Sibirica Du Tour ◽  
Allozyme Loci

The article presents the results of analysis of the variability of 23 allozyme loci in 10 populations of Siberian Stone pine. Populations from South Siberia mountain regions had higher percentage of polymorphic loci in averageand mean number of alleles per loci (P99% = 44,57 %, NA = 1,543 ± 0,014) compared to Ural populations (P99%=29,57%,NA = 1,348 ± 0,015). The average values of the observed and expected heterozygosity in the populations of the Altai-Sayan (HO = 0,087 ±0,007 and HE = 0,090 ± 0,004) and the Ural mountain region (HO = 0,083 ± 0,008 и HE = 0,082 ± 0,005)were close. About 8.4% of the total genetic diversity is due to differences between the studied populations. The results ofmultidimensional data analysis confirm the existence of the Altai-Sayan and Ural refugia in the post-glacial period andthe dispersal of Siberian stone pine to the North from the Ural glacier refugium.

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