Genetic differentiation of the Scots pine (Pinus sylvestris L.) populations along the altitudinal gradient in the Central Caucasus (within Kabardino-Balkaria)

2019 ◽  
Author(s):  
M. Z. Mollaeva ◽  
O. E. Cherepanova ◽  
F. A. Tembotova ◽  
S. N. Sannikov
Keyword(s):  
Genetic Differentiation ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Altitudinal Gradient ◽  
Central Caucasus

scholarly journals Relationship and genetic diversity of mistletoe (Viscum album L.) subspecies

2011 ◽  
Vol 75 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Leon Mejnartowicz
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Abies Alba ◽  
Viscum Album ◽  
The Other ◽  
Silver Fir ◽  
Two Generations ◽  
Systematic Nomenclature

With the help of 21 putative isoenzyme loci, the genetic diversity and variations of <em>Viscum album</em> ssp. <em>album</em> L. from 42 species, subspecies, varieties and hybrids of broadleaf trees, <em>Viscum album</em> ssp. <em>austriacum</em> (Wiesb.) Vollmann, from 4 populations of Scots pine (<em>Pinus sylvestris</em> L.) and <em>Viscum album</em> ssp. <em>abietis</em> (Wiesb.) Abromeit, from 8 populations of European silver fir (<em>Abies alba</em> Mill.) were analyzed. On the dendrogram, the three investigated subspecies form three clusters, each clearly separated from the other, so we suggest a revision of the systematic nomenclature proposed to take into consideration a return to an earlier system of dividing the European mistletoe into three species: <em>Viscum album</em> L., <em>Viscum abietis</em> Beck, and <em>Viscum laxum</em> Boiss. et Reut. From among the 21 tested loci only one locus, SOD-A, was monomorphic. The average number of actual alleles (Na) and effective alleles (Ne) was 2.23 and 1.61 respectively. The observed heterozygosity (Ho) varied from 0.199 in <em>V. album</em> ssp. <em>abietis</em> to 0.345 in the <em>V.a.</em> ssp. <em>album</em> populations. Average FST = 0.277 indicates that about 28% of genetic differentiation is due to an interpopulation diversity of <em>Viscum album</em> populations. There is a small gene flux between <em>Viscum album</em> populations with only one immigrant successfully entering a population per two generations (Nm = 0,653).

scholarly journals Effect of Prunus serotina Ehrh. Volatile Compounds on Germination and Seedling Growth of Pinus sylvestris L.

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 846
Author(s):  
Aleksandra Halarewicz ◽  
Antoni Szumny ◽  
Paulina Bączek
Keyword(s):  
Pinus Sylvestris ◽  
Volatile Compounds ◽  
Scots Pine ◽  
Prunus Serotina ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Fraction ◽  
Black Cherry ◽  
Allelopathic Potential ◽  
Pine Seedlings ◽  
Phytotoxic Effect

In temperate European forests invaded by Prunus serotina Ehrh. (black cherry), a reduction in the spontaneous regeneration capacity of Pinus sylvestris L. (Scots pine) is observed. It could be caused by various factors, including allelopathic properties of this invasive plant. In this study the phytotoxic effect of P. serotina volatile compounds on P. sylvestris and the seasonal variation in this effect were assessed. Simple assays showed that volatiles emitted from P. serotina leaves significantly inhibited root growth of P. sylvestris seedlings. Their negative effect on stem growth was much weaker. The strongest phytotoxic effect on Scots pine seedlings was caused by the volatiles emitted from the youngest black cherry leaves. In fresh foliage of P. serotina, nineteen volatile organic compounds were identified by gas chromatography–mass spectrometry (GC–MS). The dominant compound was benzaldehyde. On the basis of tests of linalool alone, it was found that this monoterpene present in the volatile fraction has a strong allelopathic potential and inhibits germination, root elongation and shoot elongation of pine seedlings. The results of our research suggest that volatile compounds from P. serotina leaves could limited survival of P. sylvestris individuals in the seedling phase.

scholarly journals Location, but not defensive genotype, determines ectomycorrhizal community composition in Scots pine ( Pinus sylvestris L.) seedlings

2021 ◽  
Author(s):  
Jim Downie ◽  
Andy F. S. Taylor ◽  
Glenn Iason ◽  
Ben Moore ◽  
Jonathan Silvertown ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Community Composition ◽  
Scots Pine ◽  
Ectomycorrhizal Community
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