caa a22 4500 475806476 CHVBK 20180406123748.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF00985325 doi (NATIONALLICENCE)springer-10.1007/BF00985325 Allozymic variation and relationships within Viola subsection Viola (Violaceae) [Elektronische Daten] [T. Marcussen, L. Borgen] Allozyme markers from ten European taxa ofViola subsectionViola suggest that this group is allotetraploid, based on x = 5. All taxa had distinct multilocus phenotypes exceptV. alba subspp.alba andscotophylla, which were identical and different from subsp.dehnhardtii. Variation was consistently higher in Mediterranean populations than in North European ones. Hybridisation seems extensive but putative F1 hybrids were distinctly less fertile than the parental species. Nevertheless, increased fertility in later-generation hybrids and shared band patterns among taxa indicate an important role of hybridisation and introgression in past and present evolution within the subsection. The octoploidV. ambigua shows affinity toV. hirta (tetraploid). The octoploidV. suavis probably originated fromV. pyrenaica and other unidentified tetraploids, and high variability suggests polytopy or even polyphyly. The stoloniferous condition (seriesFlagellatae) seems to be primitive in the subsection but the reduction of stolons (seriesEflagellatae) may have originated multiple times. Springer-Verlag, 2000 Violaceae nationallicence Viola nationallicence allozymes nationallicence introgression nationallicence reticulate evolution nationallicence hybrid speciation nationallicence paleopolyploidy nationallicence Marcussen T. Department of Biology, University of Oslo, Blindern, P.O. Box 1045, N-0316, Oslo, Norway aut Borgen L. Botanical Garden and Museum, University of Oslo, Trondheimsveien 23B, N-0562, Oslo, Norway aut Plant Systematics and Evolution Springer-Verlag 223/1-2(2000-03-01), 29-57 0378-2697 223:1-2<29 2000 223 606 https://doi.org/10.1007/BF00985325 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00985325 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marcussen T. Department of Biology, University of Oslo, Blindern, P.O. Box 1045, N-0316, Oslo, Norway aut NATIONALLICENCE 700 1- Borgen L. Botanical Garden and Museum, University of Oslo, Trondheimsveien 23B, N-0562, Oslo, Norway aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 223/1-2(2000-03-01), 29-57 0378-2697 223:1-2<29 2000 223 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer