scholarly journals Wide variation in spatial genetic structure between natural populations of the European beech (Fagus sylvatica) and its implications for SGS comparability

Heredity ◽  
2012 ◽  
Vol 108 (6) ◽  
pp. 633-639 ◽  
Author(s):  
A S Jump ◽  
L Rico ◽  
M Coll ◽  
J Peñuelas
Keyword(s):  
Genetic Structure ◽  
Fagus Sylvatica ◽  
Spatial Genetic Structure ◽  
Natural Populations ◽  
European Beech

Isolation-by-distance within naturally established populations of European beech (Fagus sylvatica)

Botany ◽  
2009 ◽  
Vol 87 (8) ◽  
pp. 791-798 ◽  
Author(s):  
Igor J. Chybicki ◽  
Magdalena Trojankiewicz ◽  
Andrzej Oleksa ◽  
Artur Dzialuk ◽  
Jaroslaw Burczyk
Keyword(s):  
Genetic Structure ◽  
Fagus Sylvatica ◽  
Spatial Clustering ◽  
Scale Effects ◽  
Isolation By Distance ◽  
Spatial Genetic Structure ◽  
Pollen Dispersal ◽  
Distance Effect ◽  
European Beech ◽  
Biparental Inbreeding

In plants, the magnitude of seed and pollen dispersal plays a pivotal role in shaping genetic structure of populations. Restricted dispersal of genes can stimulate the increase of inbreeding as well as spatial clustering of relatives. These phenomena are explained by the theory of isolation-by-distance. Because of its biology, European beech ( Fagus sylvatica L.) seems to be susceptible to isolation-by-distance. However, to date fine-scale effects, including biparental inbreeding and a spatial genetic structure are not fully recognized for this species. In this study, two populations of European beech were investigated, both representing a dense beech forest, typical for Central Europe. Using nine microsatellite markers and a recently developed method, we found a significant level of biparental inbreeding in both populations. Spatial autocorrelation analysis revealed that both populations exhibit clustering of related individuals up to 40 m. The observed spatial genetic structure fit well to the log-linear regression model. Thus, results confirmed our hypothesis of the presence of the isolation-by-distance effect. Furthermore, based on these results we inferred a dispersal mode, both for seeds and pollen; in particular, seed dispersal was 10–100 times more restricted than pollen flow, although a significant portion of short-distance pollinations responsible for biparental inbreeding cannot be excluded.

Spatial genetic structure in wild cherry (Prunus avium L.): I. variation among natural populations of different density

2010 ◽  
Vol 7 (2) ◽  
pp. 271-283 ◽  
Author(s):  
Céline Jolivet ◽  
Aki M. Höltken ◽  
Heike Liesebach ◽  
Wilfried Steiner ◽  
Bernd Degen
Keyword(s):  
Genetic Structure ◽  
Prunus Avium ◽  
Spatial Genetic Structure ◽  
Natural Populations ◽  
Wild Cherry ◽  
Prunus Avium L
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