TY  - JOUR
A1  - Drenckhahn, Detlev
A1  - Baumgartner, Werner
A1  - Zonneveld, Ben
T1  - Different genome sizes of Western and Eastern Ficaria verna lineages shed light on steps of Ficaria evolution
JF  - Forum Geobotanicum
N2  - The genus Ficaria is now considered to comprize eight Eurasian species. The most widespread European species is the tetraploid F. verna Huds. The present study provides evidence for the existence of two main lineages of F. verna that differ considerably in their genomic size by about 3 pg. A Western F. verna lineage west of river Rhine displays a mean genome size (2C-value) of 34.2 pg and is almost precisely codistributed with the diploid F. ambigua Boreau (20 pg) north of the Mediterranean. The remaining part of Europe appears to be occupied by the Eastern F. verna lineage solely (mean genome size of 31.3 pg) which codistributes in South-Eastern Europe with the diploid F. calthifolia Rchb. (15 pg). There is little overlap at the boundary of Western and Eastern F. verna lineages with the occurrence of a separate intermediate group in the Netherlands (mean genomic size of 33.2 pg) that appears to result from hybridization of both lineages. On the basis of these observations and further considerations we propose development of F. ambigua and F. calthifolia south of the Alps with subsequent divergence to populate their current Western and Eastern European ranges, respectively. The Western F. verna lineage is proposed to originate from autotetraploidization of F. ambigua (precursor) with moderate genomic downsizing and the Eastern F. verna lineage from auto¬tetraploidization of F. calthifolia (precursor).
KW  - Ficaria verna
KW  - Ficaria calthifolia
KW  - Ficaria ambigua
KW  - Durchflusscytometrie
KW  - Evolution
KW  - Genom
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-155061
UR  - http://www.forum-geobotanicum.net/articles/vol_7-2016/drenckhahn-baumgartner-zonnefeld_ficaria_verna/drenckhahn-baumgartner-zonnefeld_ficaria_verna.pdf
SN  - 1867-9315
VL  - 7
ER  -