Allozyme investigations on the genetic differentiation between closely related pines —Pinus sylvestris, P. mugo, P. uncinata, andP. uliginosa (Pinaceae)

Lewandowski, Andrzej; Boratyński, Adam; Mejnartowicz, L.

doi:10.1007/bf01086377

Cited by 58 publications

(62 citation statements)

References 15 publications

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“…phoenicea. These results confirm the genetic differentiation of the taxons (Lewandowski et al 2000) and also the biochemical and morphologic division of them (Lebreton and Thievend 1981;Lebreton 1983;Lebreton and Rivera 1989). Nevertheless, the distances between particular populations are so great that they more resemble the distances between species than between subspecies.…”

Section: Resultssupporting

confidence: 78%

Morphological variability of Juniperus phoenicea (Cupressaceae) from three distant localities on Iberian Peninsula

et al. 2011

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The aim of the present study was biometrical comparison of three Iberian populations of Juniperus phoenicea, represented by the subsp. turbinata and subsp. phoenicea. Eight features of the cones and seeds, two of the shoots and leaves were studied.The biometrical analysis of three distant populations of J. phoenicea shows great taxonomic distances among them. Two of them, representatives of J. phoenicea subsp. turbinata, are closer related each other than to the third, which represents J. phoenicea subsp. phoenicea. These results confirm the genetic differentiation of the taxons and also the biochemical and morphologic division of them. Nevertheless, the distances between particular populations are so great that more resemble the distances between species than between subspecies.

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Section: Resultssupporting

confidence: 78%

Morphological variability of Juniperus phoenicea (Cupressaceae) from three distant localities on Iberian Peninsula

et al. 2011

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“…Szmidt 1984, Guldberg et al 198, Muona and Harju 1989, Wang et al 1991, Goncharenko et al 1994, Lewandowski et al 2000. Except one, all analyzed populations were in Hardy-Weinberg equilibrium (statistically significant excess of homozygotes was detected in planted progeny (K2) from Krotoszyn).…”

Section: Discussionmentioning

confidence: 95%

Genetic variability of Scots pine maternal populations and their progenies

Kosińska¹,

Lewandowski²,

Chalupka³

2007

Silva Fenn.

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The genetic variability of Scots pine was investigated in six populations from Poland representing two maternal populations and their natural and artificial progenies. Thirteen enzyme systems controlled by 2 allozyme loci were analyzed using starch gel electrophoresis. Progeny populations maintained a high and similar level of genetic variation to that observed in the maternal populations. As expected, much closer genetic relationships were observed between maternal populations and their respective progeny than between the two maternal populations themselves. Progeny populations had the same major alleles, but differed in the number of rare alleles. Therefore, probably not all rare alleles were transferred from the maternal stands to the progenies. In addition, new rare alleles appeared in the progeny populations, possibly as a result of external pollen flow into the maternal populations.

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“…Interestingly, the pattern of admixture observed in our study is in line with some biochemical and biometric data on cone and needle morphology (Marcysiak and Boratyński 2007 and references therein). These studies showed that P. uliginosa from Węgliniec shares some biometric traits with P. sylvestris, P. mugo, and P. uncinata and is distinct as compared to other allopatric stands of the species (Lewandowski et al 2000;Prus-Głowacki et al 1998). Therefore, the existence of remnant populations of P. uncinata in the Silesian Lowlands seems possible and may result from the expansion of west-European refugia across the northwestern pre-Alpine territories during the late Dryas/early Holocene (Marcysiak and Boratyński 2007).…”

Section: Discussionmentioning

confidence: 99%

Hybridization in contact zone between temperate European pine species

Wachowiak

Żukowska

Wójkiewicz

et al. 2016

Tree Genetics & Genomes

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Hybridization studies are important to advance our understanding of the interspecific gene flow and its evolutionary consequences in closely related species. Hybridization and admixture patterns were assessed in a contact zone and reference populations of European pine species using sequence data from 26 nuclear genes and a species-diagnostic cpDNA marker. Reference populations formed three distinct genetic clusters comprising Pinus sylvestris, Pinus mugo/Pinus uliginosa, and Pinus uncinata. Evidence of population structure was found only in P. uliginosa. Based on phenotypic characteristics and molecular data, we identified five groups of individuals in the contact zone in Poland, comprising forms of the parental species and intermediates that were most probably the result of interspecific crosses. A combination of nuclear gene sequence data and a diagnostic organelle marker were used to show that hybridization is frequent in the contact zone and results in hybrid trees with distinct phenotypic identity. The influence of selection in maintaining hybrid phenotypes in environments unsuited to parental species was inferred from nucleotide polymorphism data. A lack of admixture in reference populations suggests that hybridization has not occurred during post-glacial migration and so the contact zone represents a distinct, active example of ongoing evolution. Pine populations in this zone will be a valuable system for studying the genetic basis of hybrid advantage in environmental conditions untypical of pure parental species.

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Allozyme investigations on the genetic differentiation between closely related pines —Pinus sylvestris, P. mugo, P. uncinata, andP. uliginosa (Pinaceae)

Cited by 58 publications

References 15 publications

Morphological variability of Juniperus phoenicea (Cupressaceae) from three distant localities on Iberian Peninsula

Morphological variability of Juniperus phoenicea (Cupressaceae) from three distant localities on Iberian Peninsula

Genetic variability of Scots pine maternal populations and their progenies

Hybridization in contact zone between temperate European pine species

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