Hensen, Isabell and Oberprieler, Christoph and Wesche, Karsten (2005) Genetic structure, population size, and seed production of Pulsatilla vulgaris Mill. (Ranunculaceae) in Central Germany. FLORA, 200 (1). pp. 3-14. ISSN 0367-2530,
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Pulsatilla vulgaris Mill. (Ranunculaceae) is a rare and rapidly declining grassland community species that was once widespread at a time when Central Germany was covered by steppe vegetation. Through the course of this study, the patterns of random-amplified polymorphic DNA (RAPD) variation among 11 populations of varying size were analysed to assess any possible local differentiation, in relation to spatial isolation, resulting from random genetic drift brought on by reduced population size and lack of migration between geographically isolated populations. Following results attained from methods including: multivariate analysis based on asymmetric Soerensen similarity, phi(ST)-statistics, and analysis of molecular variance, we were able to conclude that there is a high within-population variability (84.4%) and a weak, but significant, differentiation among Populations (phi(ST) = 0.17). A matrix correlation between genetic and geographical distances revealed that geographical differentiation was reflected in the RAPD profile (Mantel test: r = 0.47, p = 0.002). Further significant correlations were noted between population size and both percentage of polymorphic loci (p = 0.02) and genetic diversity (p = 0.03). An additional analysis of seed production showed that mean seed set, seed number, and mean seed mass per Population could be attributed to differences in population size, whereas only seed mass was related to genetic variation. (c) 2005 Elsevier GmbH. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GENTIANA-PNEUMONANTHE L; AGRICULTURAL LANDSCAPE; HABITAT FRAGMENTATION; SALVIA-PRATENSIS; RAPD VARIATION; PLANT; FITNESS; CONSERVATION; CONSEQUENCES; DIVERSITY; fitness; fragmentation; population-genetic structure; Pulsatilla vulgaris; RAPD-PCR; small populations |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Group Plant Systematics and Evolution (Prof. Dr. Christoph Oberprieler) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Jun 2021 06:59 |
| Last Modified: | 02 Jun 2021 06:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36694 |
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