Impact of river system structure on the genetic diversity of reed populations
| Autor: | Fuxová, Gabriela |
|---|---|
| Přispěvatelé: | Fér, Tomáš, Kubátová, Barbora |
| Jazyk: | čeština |
| Rok vydání: | 2011 |
| Předmět: |
rozmnožování
ecology anemochorie genetic diversity říční systémy river systems migration long distance dispersal mikrosatelity common reed Česká republika water plants migrace clonality SSRs microsatellites dálkové šíření rákos obecný genetická diverzita molecular methods disperze anemochory ekologie Czech republic molekulární metody dispersal hydrochory hydrochorie river corridor plants Phragmites australis vodní rost pobřežní rostliny klonalita |
| Popis: | Many plant species are closely related to river biotopes or to biotopes influenced by rivers. River systems create important linear corridors in ecosystems and directly or non-directly influence spatial spread of species in these environments. This offer many questions about species spread in this system. We can answer these questions by using molecular methods. Using 10 microsatellite (SSRs) primers, 202 individuals of Phragmites australis from 60 populations were analysed. Those analyses allowed reveal kinship of individuals, obtain information about spatial spread of populations and about spreading of common reed. Phragmites australis creates both - monoclonal and polyclonal - populations. Dependence of rate of clonality on environment was revealed. Populations from river banks are more monoclonal, populations from pond shores are more polyclonal. Populations are isolated. The highest percentage of variability was explained on among-population level. This is common for anemochoric species. Communication between populations is present, more on shorter distances. Evidence for vegetative spread was found on short distance. Generative spread is much more common. Long-distance spreading is mediated by generative diaspores - seeds. This spreading includes within-river spread, among-river spread and spreading... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|