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Morphological variation in Scandinavian populations of the diploid-tetraploid species pair Anthericum ramosum and Anthericum liliago (Anthericaceae)

Rosquist, Gabrielle LU and Prentice, Honor C LU (2001) In Canadian Journal of Botany 79(7). p.850-860
Abstract
Both members of the diploid-tetraploid species pair Anthericum ramosum L. and Anthericum liliago L. occur as geographically disjunct isolates on the margins of their northern range in Scandinavia. Variation in floral morphology was studied in 33 populations of A. ramosum from four geographic regions and 25 populations of A. liliago from seven regions in Scandinavia. Tepal shape was characterized with the help of moment invariants, and intra- and inter-specific variation in style and filament length was investigated. There were significant between-region and between-population differences in tepal shape and style and filament length within both species. However, despite the geographic disjunction of both species' distributions, there was... (More)
Both members of the diploid-tetraploid species pair Anthericum ramosum L. and Anthericum liliago L. occur as geographically disjunct isolates on the margins of their northern range in Scandinavia. Variation in floral morphology was studied in 33 populations of A. ramosum from four geographic regions and 25 populations of A. liliago from seven regions in Scandinavia. Tepal shape was characterized with the help of moment invariants, and intra- and inter-specific variation in style and filament length was investigated. There were significant between-region and between-population differences in tepal shape and style and filament length within both species. However, despite the geographic disjunction of both species' distributions, there was considerable overlap in tepal shape between populations from the different regions. The hierarchical partitioning of tepal shape diversity was similar in the two species. Most of the total diversity was explained by regional and interpopulation components of diversity (48% and 35%, respectively, in A. ramosum and 61% and 22%, respectively, in A. liliago). The two species were clearly discriminated on the basis of tepal shape and style and outer filament lengths. A southern Swedish population, containing triploid hybrids between A. ramosum and A. liliago, was indistinguishable from other Scandinavian populations of A. liliago on the basis of tepal shape. However, a (allegedly hybrid) Danish population of A. liliago was intermediate between the two species in tepal shape. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Canadian Journal of Botany
volume
79
issue
7
pages
850 - 860
publisher
Canadian Science Publishing, NRC Research Press
external identifiers
  • scopus:0034892988
ISSN
0008-4026
DOI
10.1139/cjb-79-7-850
language
English
LU publication?
yes
id
e7999516-1297-4b0c-bc64-d879e70f5d8e (old id 147241)
date added to LUP
2007-07-02 13:56:42
date last changed
2018-05-29 10:24:05
@article{e7999516-1297-4b0c-bc64-d879e70f5d8e,
  abstract     = {Both members of the diploid-tetraploid species pair Anthericum ramosum L. and Anthericum liliago L. occur as geographically disjunct isolates on the margins of their northern range in Scandinavia. Variation in floral morphology was studied in 33 populations of A. ramosum from four geographic regions and 25 populations of A. liliago from seven regions in Scandinavia. Tepal shape was characterized with the help of moment invariants, and intra- and inter-specific variation in style and filament length was investigated. There were significant between-region and between-population differences in tepal shape and style and filament length within both species. However, despite the geographic disjunction of both species' distributions, there was considerable overlap in tepal shape between populations from the different regions. The hierarchical partitioning of tepal shape diversity was similar in the two species. Most of the total diversity was explained by regional and interpopulation components of diversity (48% and 35%, respectively, in A. ramosum and 61% and 22%, respectively, in A. liliago). The two species were clearly discriminated on the basis of tepal shape and style and outer filament lengths. A southern Swedish population, containing triploid hybrids between A. ramosum and A. liliago, was indistinguishable from other Scandinavian populations of A. liliago on the basis of tepal shape. However, a (allegedly hybrid) Danish population of A. liliago was intermediate between the two species in tepal shape.},
  author       = {Rosquist, Gabrielle and Prentice, Honor C},
  issn         = {0008-4026},
  language     = {eng},
  number       = {7},
  pages        = {850--860},
  publisher    = {Canadian Science Publishing, NRC Research Press},
  series       = {Canadian Journal of Botany},
  title        = {Morphological variation in Scandinavian populations of the diploid-tetraploid species pair Anthericum ramosum and Anthericum liliago (Anthericaceae)},
  url          = {http://dx.doi.org/10.1139/cjb-79-7-850},
  volume       = {79},
  year         = {2001},
}