scholarly journals Study of the stem growth of heteroplastic grafts of stone pines in the Krasnoyarsk forest-steppe

2021 ◽  
Vol 20 (1) ◽  
pp. 249-254
Author(s):  
G. V. Kuznetsova ◽  
N. V. Astrakhantseva
Keyword(s):  
Scots Pine ◽  
Annual Ring ◽  
Mutual Influence ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Pinus Sibirica ◽  
Pinus Cembra ◽  
Stone Pine ◽  
Species Characteristics ◽  
Pinus Sibirica Du Tour

Changes in the radial growth Pinus sibirica Du Tour and Pinus cembra L. grafts and Scots pine (Pinus sylvestris L.) rootstocks were observed in comparison with control (non-grafted) trees of the corresponding species, whichindicated the mutual influence of the grafting components on each other. The smaller width of the annual rings in Pinuscembra grafts compared to Siberian cedar grafts is due to their species features. In general, the phloem was more conservative in structure than the xylem and in the grafts union zone retained the species characteristics, sometimes manifestedin the form of jagged junction of two types of bark, while in the xylem in the union zone were cells with an intermediatestructure. The study of seasonal dynamics showed that, in comparison with the rootstocks of Scots pine (Pinus sylvestrisL.), the scions of Stone pine quickly passed to the process of maturation of tracheids, especially the scions of Pinus sibirica Du Tour, which also completed the development of xylem annual ring faster. The similarity of some parameters of theanatomical structure, reactions to climatic conditions, synchronization of the development of the annual ring in the scion of the P. cembra with the stock of the Scots pine explain the higher safety of grafts of the P. cembra in comparison withthe P. sibirica.

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

FUNGI COLONIZING CONIFEROUS SEEDLINGS IN FOREST NURSERIES OF MIDDLE SIBERIA

2021 ◽  
Vol 14(63) (1) ◽  
pp. 57-66
Author(s):  
Marina A. SHELLER ◽  
Elena A. SHILKINA ◽  
Aleksey A. IBE ◽  
Tatyana V. SUKHIKH ◽  
Inna E. SAFRONOVA
Keyword(s):  
Pinus Sibirica ◽  
Stone Pine ◽  
Siberian Stone Pine ◽  
Picea Obovata ◽  
Siberian Spruce ◽  
Phialocephala Fortinii ◽  
Phytosanitary Measures ◽  
Forest Nurseries ◽  
Pinus Sibirica Du Tour ◽  
Middle Siberia

The study was carried out in four forest nurseries of Middle Siberia. Affected seedlings of Scots pine (Pinus sylvestris L.), Scots Siberian stone pine (Pinus sibirica Du Tour), and Siberian spruce (Picea obovata Ledeb.) were collected for molecular phytopathological examination. In total, 14 fungal taxa were identified in the needles and roots of the plants. The most dominant among them were Sydowia polyspora (Bref. & Tavel) E., Didymella glomerata (Corda) Qian Chen & L. Cai, Cladosporium herbarum (Pers.) Link, Lophodermium seditiosum Minter, Staley & Millar, Phialocephala fortinii C. J. K. Wang & H. E. Wilcox and Cadophora finlandica (C. J. K. Wang & H. E. Wilcox) T. C. Harr. & McNew. The richness of the fungal taxa was higher in the needles than in the roots of all the tree species studied. The obtained results could be used for implementing more effective phytosanitary measures in the studied nurseries.

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.

scholarly journals Climate Variability May Delay Post-Fire Recovery of Boreal Forest in Southern Siberia, Russia

2021 ◽  
Vol 13 (12) ◽  
pp. 2247
Author(s):  
Qiaoqi Sun ◽  
Arden Burrell ◽  
Kirsten Barrett ◽  
Elena Kukavskaya ◽  
Ludmila Buryak ◽  
...  
Keyword(s):  
Climate Change ◽  
Climate Variability ◽  
Scots Pine ◽  
Vegetation Index ◽  
Fire Regime ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Strong Impact ◽  
Southern Siberia ◽  
Increased Temperature

Prolonged dry periods and increased temperatures that result from anthropogenic climate change have been shown to increase the frequency and severity of wildfires in the boreal region. There is growing evidence that such changes in fire regime can reduce forest resilience and drive shifts in post-fire plant successional trajectories. The response of post-fire vegetation communities to climate variability is under-studied, despite being a critical phase determining the ultimate successional conclusion. This study investigated the responses of post-fire recruited species to climate change and inter-annual variability at 16 study sites that experienced high-severity fire events, mostly in early 2000, within the Scots pine forest-steppe zone of southeastern Siberia, Russia. These sites were originally dominated by Scots pine, and by 2018, they were recruited by different successional species. Additionally, three mature Scots pine stands were included for comparison. A Bayesian Additive Regression Trees (BART) approach was used to model the relationship between Landsat-derived Normalized Difference Vegetation Index (NDVI) time series, temperature and precipitation in the 15 years after a stand-replacing fire. Using the resulting BART models, together with six projected climate scenarios with increased temperature and enhanced inner-annual precipitation variability, we simulated NDVI at 5-year intervals for 15 years post-fire. Our results show that the BART models performed well, with in-sample Pseudo-R2 varying from 0.49 to 0.95 for fire-disturbed sites. Increased temperature enhanced greenness across all sites and across all three time periods since fires, exhibiting a positive feedback in a warming environment. Repeatedly dry spring periods reduced NDVI at all the sites and wetter summer periods following such dry springs could not compensate for this, indicating that a prolonged dry spring has a strong impact consistently over the entire early developmental stages from the initial 5 years to 15 years post-fire. Further, young forests showed higher climate sensitivity compared to the mature forest, irrespective of species and projected climatic conditions. Our findings suggest that a dry spring not only increases fire risk, but also delays recovery of boreal forests in southern Siberia. It also highlights the importance of changing rainfall seasonality as well as total rainfall in a changing climate for post-fire recovery of forest.

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