Affiner les résultats

Malagasy Dracaena Vand. ex L. (Ruscaceae): an investigation of discrepancies between morphological features and spatial genetic structure at a small evolutionary scale

Buerki, Sven ; Callmander, Martin ; Schüpfer, Fanny ; Ravokatra, Mamy ; Küpfer, Philippe ; Alvarez, Nadir

In: Plant Systematics and Evolution, 2009, vol. 280, no. 1-2, p. 15-28

Specific pollinator attraction and the diversification of sexually deceptive Chiloglottis (Orchidaceae)

Mant, J. ; Peakall, R. ; Weston, P.

In: Plant Systematics and Evolution, 2005, vol. 253, no. 1-4, p. 185-200

Interspecific hybridization in the genus Hieracium s. str.: evidence for bidirectional gene flow and spontaneous allopolyploidization

Mráz, Patrik ; Chrtek, Jindřich ; Fehrer, Judith

In: Plant Systematics and Evolution, 2011, vol. 293, no. 1-4, p. 237-245

Reproductive isolation in the Aegean Ophrys omegaifera complex (Orchidaceae)

Schlüter, P. M. ; Ruas, P. M. ; Kohl, G. ; Ruas, C. F. ; Stuessy, T. F. ; Paulus, H. F.

In: Plant Systematics and Evolution, 2007, vol. 267, no. 1-4, p. 105-119

Climate oscillations and species interactions: large-scale congruence but regional differences in the phylogeographic structures of an alpine plant and its monophagous insect

Borer, Matthias ; Arrigo, Nils ; Buerki, Sven ; Naisbit, Russell E. ; Alvarez, Nadir

In: Journal of Biogeography, 2012, p. -

Aim To predict the fate of alpine interactions involving specialized species, using a monophagous beetle and its host plant as a case study.Location The Alps.Methods We investigated genetic structuring of the herbivorous beetle Oreina gloriosa and its specific host-plant Peucedanum ostruthium. We used genome fingerprinting (in the insect and the plant) and sequence data (in the insect)...

High genetic and morphological diversity despite range contraction in the diploid Hieracium eriophorum (Asteraceae) endemic to the coastal sand dunes of south-west France

Frey, David J. ; Haag, Christoph R. ; Kozlowski, Gregor ; Tison, Jean-Marc ; MráZ, Patrik

In: Botanical Journal of the Linnean Society, 2012, p. -

Endemic plants inhabiting coastal sand dunes show augmented extinction risks due to the dynamic nature of dunes and strong human pressure on coastal areas. To investigate the survival strategies and threats to long-term survival of such species, we combined genetic, morphological and biogeographical approaches, using the example of Hieracium eriophorum (Asteraceae) and its putative cryptic sister...

Interspecific hybridization in the genus Hieracium s. str. : evidence for bidirectional gene flow and spontaneous allopolyploidization

Mráz, Patrik ; Chrtek, Jindřich ; Fehrer, Judith

In: Plant Systematics and Evolution, 2011, vol. 293, p. 237-245

Although reticulation has indisputably played an important role in the evolutionary history of the genus Hieracium s. str. (Asteraceae), convincingly documented cases of recent interspecific hybridization are very rare. Here we report combined evidence on recent hybridization between two diploid species, Hieracium alpinum and H. transsilvanicum. The hybrid origin...