Wyniki wyszukiwania - Biblioteka Nauki

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Polskie proweniencje świerka pospolitego (Picea abies Karst.) w czechosłowackich doświadczeniach proweniencyjnych

100%

Paule L.

Sylwan

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1988

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tom 132

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nr 09

2

Patterns of genetic variation in Carpathian forest trees

51%

Gomory D. , Paule L. , Longauer R.

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2013

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tom 55

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nr 1

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Phylogeny of beech in western Eurasia as inferred by approximate Bayesian computation

51%

Gomory D. , Paule L. , Macejovsky V.

Acta Societatis Botanicorum Poloniae

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2018

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tom 87

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nr 2

EN

The Fagus sylvatica L. species complex in Europe and Western Asia comprises two commonly recognized subspecies, F. sylvatica subsp. sylvatica [= F. sylvatica sensu stricto (s. str.)] and F. sylvatica subsp. orientalis (= F. orientalis), and two putatively hybridogenous or intermediate taxa, “F. moesiaca” and “F. taurica”. The present study aimed to examine the demographic history of this species complex using 12 allelic loci of nine allozymes scored in 279 beech populations in western Eurasia. Three sets of phylogenetic scenarios were tested by approximate Bayesian computation: one dealing with the divergence of subspecies and/or regional populations within the whole taxonomical complex, and two others focusing on the potential hybrid origin of “F. moesiaca” and “F. taurica”. The best-supported scenario within the first set placed the time of divergence of regional populations of F. orientalis in the Early Pleistocene (1.18–1.87 My BP). According to this scenario, the Iranian population was the ancestral lineage, whereas F. sylvatica s. str. was the lineage that diverged most recently. “Fagus taurica” was found to have originated from hybridization between the Caucasian population of F. orientalis and F. sylvatica s. str. at 144 ky BP. In contrast, there was no evidence of a hybrid origin of “F. moesiaca”. The best-supported scenario suggested that the Balkan lineage is a part of F. sylvatica s. str., which diverged early from F. orientalis in Asia Minor (817 ky BP), while both the Italian and Central-European lineages diverged from the Balkan one later, at the beginning of the last (Weichselian) glacial period.

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Development of genetic structures in a Norway spruce [Picea abies Karst.] population colonizing the abandoned agricultural land: a look back and a look ahead

51%

Gomory D. , Fabrika M. , Chudy F. , Paule L.

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nr 1

EN

Changes in the genetic variation and spatial genetic structures were modelled in a Norway spruce (Picea abies Karst.) population colonizing abandoned pasture area of 100 hectares at the locality Príslopy, Poľana Mts. (Carpathians, Central Slovakia, 48º38’ N, 19º25’E, approx. 900 m a.s.l.). The development in the past was reconstructed on the basis of a series of historical aerial photographs, reflecting primarily the population growth and the colonization process. The future development was predicted using the individual-tree model SIBYLA developed by Fabrika (2003), whereby it reflects the future density-dependent mortality. No significant changes of the allelic richness or gene diversity were observed during the whole period of modelling (1956 to 2065). Fixation index (reflecting the degree of inbreeding) has steadily increased since the initial stage up to the present, and is predicted to increase further, indicating the accumulation of inbred individuals due to the formation of spatially continuous kin groups. This assumption is supported by the development of spatial genetic structures (non-random distribution of genotypes). The distograms of the number of alleles in common (NAC) showed that spatially proximate individuals share significantly more alleles than expected under random distribution of genotypes. Spatial genetic structures were formed at the very early stage of colonization, have persisted until the present and are predicted to be even enhanced in the future. Isolation by distance due to a limited seed dispersal, strong fertility variation and facilitation of seedling establishment in the vicinity of early colonizers are proposed as explanation. The results indicate that Norway spruce, although being the component of many climax forest communities, is capable under certain circumstances to behave as a very efficient pioneer. The species disperses enough seeds on medium distances to reach suitable sites within open areas and establish as seedlings, whereas a strong seed dispersal at short distances and modification of environment near the early colonizers allow the extension of kin groups and gradual occupation of the whole available space.

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Variation patterns of mitochondrial DNA of Abies alba Mill. in suture zones of postglacial migration in Europe

26%

Gomory D. , Longauer R. , Liepelt S. , Ballian D. , Brus R. , Kraigher H. , Parpan V. I. , Parpan T. V. , Paule L. , Stupar V. I. , Ziegenhagen B.

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tom 73

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nr 3

EN

Thirty silver fir populations originating from the putative suture zones of the postglacial recolonization (Slovenia, Bosnia and Hercegovina, Ukraine) were studied using a mitochondrial nad5-4 gene marker. The geographical distribution of mtDNA haplotypes in the Ukrainian Carpathians and their northern foothills indicates a very recent meeting of migration streams arriving from the Romanian Carpathians and Central Europe. In the western part of the Balkan Peninsula, two counterparallel migration streams are the most plausible explanation of the pattern observed. The haplotype typical for the Balkan Peninsula predominates along the Adrian coast, whereas the CentralEuropean haplotype is more represented in the inland.