scholarly journals Patterns of genetic variation in bud flushing of Abies alba populations

2018 ◽  
Vol 11 (2) ◽  
pp. 284-290 ◽  
Author(s):  
G Mihai ◽  
I Mirancea ◽  
MV Birsan ◽  
A Dumitrescu
Keyword(s):  
Genetic Variation ◽  
Abies Alba ◽  
Bud Flushing

scholarly journals Genetic analysis of silver-fir populations in the Beskids

2011 ◽  
Vol 72 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Leon Mejnartowicz
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Genetic Analysis ◽  
Abies Alba ◽  
Genetic Distances ◽  
Silver Fir ◽  
Geographical Distance ◽  
Polymorphic Loci ◽  
Expected Heterozygosity ◽  
Rare Alleles

Twenty-eight isozymic loci were studied in the Beskid Mts., in four populations of common silver-fir (<em>Abies alba</em>): one in Beskid Makowski (BM) and three populations in Beskid Sądecki (BS). Their genetic variation and diversity were analyzed, and Nei's genetic distances between the populations were calculated. The results show that the geographical distance between the BM population and the three BS populations is reflected in genetic distances. The BM population is clearly distinct from the others. It has the lowest genetic diversity (<em>I</em> = <em>0.42</em>), percentage of polymorphic loci <em>(%PoL </em>= <em>64.29</em>) and number of rare alleles (<em>NoRa </em>= <em>5</em>). Besides, the BM population has the highest observed heterozygosity (<em>Ho </em>= <em>0.291</em>), which exceeds the expected heterozygosity (<em>He </em>= <em>0.254</em>), estimated on the basis of the Hardy-Weinberg Principle. On the contrary, BS populations are in the state of equilibrium, which is manifested, in similar values of <em>He </em>= <em>0.262 </em>and <em>Ho </em>= <em>0.264</em>.

Levels of genetic variation in European silver fir (Abies alba)

Genetica ◽  
1990 ◽  
Vol 82 (1) ◽  
pp. 1-10 ◽  
Author(s):  
F. Bergmann ◽  
H. -R. Gregorius ◽  
J. B. Larsen
Keyword(s):  
Genetic Variation ◽  
Abies Alba ◽  
Silver Fir

Genetic variation and differentiation of Abies alba Mill. populations from Ukrainian Carpathians

2005 ◽  
Vol 41 (3) ◽  
pp. 275-283 ◽  
Author(s):  
I. I. Korshikov ◽  
N. N. Pirko ◽  
Ya. V. Pirko
Keyword(s):  
Genetic Variation ◽  
Abies Alba

scholarly journals Genetic Variation Among and Within Populations in Swedish Species of Sorbus aucuparia L. and Prunus padus L. Assessed in a Nursery Trial

2005 ◽  
Vol 54 (1-6) ◽  
pp. 1-8 ◽  
Author(s):  
V. Baliuckas ◽  
T. Lagerström ◽  
L. Norell ◽  
G. Eriksson
Keyword(s):  
Genetic Variation ◽  
Growth Traits ◽  
Genetic Correlations ◽  
Population Variation ◽  
Sorbus Aucuparia ◽  
Population Effect ◽  
Prunus Padus ◽  
Bud Flushing ◽  
Over Time ◽  
Leaf Colouring

Abstract Seedlings originating from open-pollinated offspring of six and four populations of Prunus padus and Sorbus aucuparia, respectively, were studied with respect to phenology and growth traits for 3-4 years in a nursery. There were no replications at the population levels since the experiments should be converted to seedling seed orchards. Therefore, a special statistical model for analysis of the population effect was developed making use of neighbour performances. This model was also used for derivation of heritabilities. The heritabilities for phenology traits were in many cases high in P. padus, > 0.40, while they varied in the range 0.07-0.62 in S. aucuparia. The population effect was significant for all growth rhythm traits in P. padus and for a majority of traits in S. aucuparia. In both species the heritability for height decreased over time. Only bud flushing in P. padus indicated a relationship with population latitudinal origin in some cases. The genetic correlations between bud flushing different years were relatively strong in both species while the corresponding correlations for leaf colouring were moderate in P. padus and weak in S. aucuparia. In conclusion, the observed structure suggests that the pattern of seed dispersal may have an influence on the among- and within-population variation.

scholarly journals The Pattern of Genetic Variation, Survival and Growth in the Abies alba Mill. Population within the Introgression Zone of Two Refugial Lineages in the Carpathians

Forests ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 849
Author(s):  
Marta Kempf ◽  
Marcin Zarek ◽  
Jarosław Paluch
Keyword(s):  
Genetic Variation ◽  
Survival Rate ◽  
Regional Climate ◽  
Abies Alba ◽  
Tree Height ◽  
Climatic Conditions ◽  
Phenotypic Traits ◽  
Nuclear Markers ◽  
Lower Survival Rate ◽  
New Gene

Background and Objectives: The contact zones of different refugial lineages, where mixing of genetic backgrounds leads to new gene combinations or pre-adaptations, represent hotspots of genetic diversity. The aim of the study was to compare patterns in the genetic structure of the Abies alba Mill. population in the Eastern and Western Carpathians (Eastern Europe) within the introgression zone of two refugial lineages and the growth response of provenances located in a gradient of pollen-mediated gene fluxes. Materials and Methods: The mitochondrial nad5-4 marker and five polymorphic microsatellite nuclear markers (nSSR) were analyzed in 56 subpopulations from Romania, Ukraine, Slovakia and Poland. The survival rate and height growth up to an age of 15 years were compared for 33 subpopulations, forming a distance gradient between 170 and 470 km from the meeting zone of the refugial lineages. Results: The results of the analysis of molecular variance indicated that 8.2% of the total genetic variation is attributable to the between-subpopulation level and 1.7% to the between-lineage level. The pollen-mediated influence of the eastern lineage was detectable at a distance of at least 300 km in the western direction. Eastern provenances with origin sites closer to the meeting zone of the refugial lineages were characterized by lower survival rate and lower heights (about 8% lower than the average tree height) compared to subpopulations from the central and western part of the studied region. Conclusions: Pollen-mediated gene flow between lineages appears to have been sufficient to cause a significant change in phenotypic traits related to tree growth. Subpopulations from the central and western parts of the studied region are better adapted to current climatic conditions. Nonetheless, given the increasing aridity of the regional climate, a safe guideline is to increase genetic mixing.

scholarly journals Genetic variation of silver fir progeny from Tisovik Reserve population determined via microsatellite and isozyme markers

2017 ◽  
Vol 59 (1) ◽  
pp. 45-58
Author(s):  
Ewa Maria Pawlaczyk ◽  
Alina Bączkiewicz ◽  
Katarzyna Buczkowska ◽  
Maria Anna Bobowicz
Keyword(s):  
Genetic Variation ◽  
Abies Alba ◽  
Unknown Origin ◽  
Equilibrium Analysis ◽  
Silver Fir ◽  
Isolated Population ◽  
Primeval Forest ◽  
High Level ◽  
Białowieża Primeval Forest ◽  
Progeny Line

Abstract Progeny from 19 family lines of silver fir (Abies alba Mill.) from a small, native and isolated population from the Tisovik Reserve (Belarusian part of Białowieża Primeval Forest) growing in an experimental plot near Hajnówka (Polish part of Białowieża Primeval Forest) were analysed in terms of 4 nuclear microsatellite DNA loci and 9 isozyme systems with 14 loci. The aim of this study was to determine the genetic variation within and between progeny lines. Analysis of isozyme loci showed that all progeny lines, except the progeny lines T6 and T16, were characterised by an excess of heterozygotes and 20% of the detected variation occurred between progeny. Progeny formed two groups. Microsatellite loci showed that 6 progeny lines demonstrated an excess of heterozygotes and 12 an excess of homozygotes. On an average, the population was in the Hardy-Weinberg equilibrium. Analysis of molecular variance (AMOVA) showed that 14% of the detected variation occurred between offspring and the remaining 86% within progeny lines. The most distinct progeny line was Tl, where the highest number of alleles per locus was detected. Generally, progeny of Tisovik is characterised by high level of differentiation as the offspring of isolated population that have limited number of individuals to crossing (only 20). In some progeny line, the private alleles that are detected may be the result of pollination from Polish part of Białowieża Forest where in 1920s and 1930s of XX century had planted the seedling of silver fir of unknown origin. The substructuring of population is observed, and the detected deficiency of heterozygotes may be ostensible as a result of the Wahlund effect. Such pattern of genetic structure could also be an effect of harsh environmental conditions exerting selection pressure and modifying the genetic composition of this population.

scholarly journals Variability of silver fir (Abies alba Mill.) progeny from the Tisovik Reserve expressed in needle traits and chloroplast microsatellite DNA

2017 ◽  
Vol 45 (1) ◽  
pp. 1-16
Author(s):  
Ewa M. Pawlaczyk ◽  
Maria A. Bobowicz
Keyword(s):  
Genetic Variation ◽  
Microsatellite Dna ◽  
Abies Alba ◽  
Silver Fir ◽  
Experimental Plot ◽  
Range Limit ◽  
Chloroplast Microsatellite ◽  
Natural Range ◽  
Resin Canals ◽  
Białowieża Primeval Forest

AbstractProgeny from nineteen family lines of silver fir (Abies alba Mill.) from the Tisovik Reserve growing in an experimental plot were analyzed based on 4 chloroplast microsatellite DNA loci and 12 morphological and anatomical needle traits. The Tisovik Reserve is located in Białowieża Primeval Forest, 120 km north of the natural range limit of this species, and embraces a small and isolated natural population of silver fir. The aim of this study was to determine genetic variation within and between progeny lines. Analysis of phenotypic variation showed that the traits which differed most among individuals were the needle width and the distance from resin canals to vascular bundle. Those traits, which differed most between the progeny lines, were the number of endodermic cells around the vascular bund and the weight of hypodermic cells. In Tisovik progeny, we detected 107 different haplotypes. In progeny lines, we detected more haplotypes than in maternal trees, and most haplotypes did not exist in maternal trees. This may be the result of pollen influx from other silver fir stands. Progeny from Tisovik showed a higher level of variability in comparison with maternal trees.

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