Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.2307/2656649
Titel (primär) RAPD variation among and within small and large populations of the rare clonal plant Ranunculus reptans (Ranunculaceae)
Autor Fischer, M.; Husi, R.; Prati, D.; Peintinger, M.; van Kleunen, M.; Schmid, B.
Quelle American Journal of Botany
Erscheinungsjahr 2000
Department BZF
Band/Volume 87
Seite von 1128
Seite bis 1137
Sprache englisch
Abstract

In the pre-alpine region of Europe numbers and sizes of populations of the clonal lake shore plant Ranunculus reptans have declined because of the regulation of lake water levels. We investigated genetic variation among and within 17 populations of different size (cover 1-10000 m(2)) in R. reptans with RAPD (random amplified polymorphic DNA) profiles. We sampled 127 rosettes in populations at Lake Constance and three populations at or near Lake Come. There was significant genetic variation between plants from the two lake regions (5.9%, analysis of molecular variance [AMOVA], P < 0.001), among populations within lake regions (20.4%, P < 0.001), and within populations (73.7%. P < 0.001). Under the assumptions of Wright's island model the variation among populations corresponds to a gene Row of N(e)m = 0.70. Within the 14 Lake Constance populations we detected significant genetic variation among subpopulations separated by only a few metres (4.0% of the within-population variation; P < 0.05). Molecular variance was 24% smaller in small populations covering <100 m(2) area than in larger ones (P < 0.03), indicating that samples From large populations were genetically more variable than samples representing comparable areas of smaller populations. We conclude that gene how among populations is very limited and that genetic drift has caused reduced genetic variability of smaller populations. Conservation of genetic variability in R. reptans requires persistence of large and also of small populations (because of population differentiation). and it could be enhanced by increasing the size of small populations (to counter genetic drift).
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=7124
Fischer, M., Husi, R., Prati, D., Peintinger, M., van Kleunen, M., Schmid, B. (2000):
RAPD variation among and within small and large populations of the rare clonal plant Ranunculus reptans (Ranunculaceae)
Am. J. Bot. 87 , 1128 - 1137 10.2307/2656649