Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution
We investigated breeding system, germination capacity, and phenotypic variation within and among several populations of the arctic‐alpine Saxifraga aizoides from the periphery of its alpine distribution area in Switzerland. Flowers of S. aizoides proved to be self‐compatible, but crossing yielded mu...
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crwiley:10.1111/j.1756-1051.1998.tb01550.x 2024-03-24T08:59:59+00:00 Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution Meier, Christine Holderegger, Rolf 1998 http://dx.doi.org/10.1111/j.1756-1051.1998.tb01550.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1756-1051.1998.tb01550.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1756-1051.1998.tb01550.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Nordic Journal of Botany volume 18, issue 6, page 681-688 ISSN 0107-055X 1756-1051 Plant Science Ecology, Evolution, Behavior and Systematics journal-article 1998 crwiley https://doi.org/10.1111/j.1756-1051.1998.tb01550.x 2024-02-28T02:14:48Z We investigated breeding system, germination capacity, and phenotypic variation within and among several populations of the arctic‐alpine Saxifraga aizoides from the periphery of its alpine distribution area in Switzerland. Flowers of S. aizoides proved to be self‐compatible, but crossing yielded much higher seed set than selfing. Agamospermy did not occur. This result fits well into a general lay‐out of the common breeding system in the genus Saxifraga. Germination of the pioneer species S. aizoides was fast and high in most populations and for most stratification and germination conditions. Nevertheless, a small, isolated population of this species exhibited a lower germination rate, possibly caused by enhanced inbreeding. Phenotypic variation, especially in petal colour and leaf shape, indicated considerable genetic variation within and among populations of S. aizoides. High germination capacity, successful selfing, and the possibility to maintain substantial intrapopulational genetic variation due to high outbreeding may play decisive roles in the maintenance of biogeographically outlying, relic populations of S. aizoides in the Swiss Plateau as well as in the colonization of new habitat patches. Article in Journal/Newspaper Arctic Saxifraga aizoides Wiley Online Library Arctic Nordic Journal of Botany 18 6 681 688 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Plant Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Plant Science Ecology, Evolution, Behavior and Systematics Meier, Christine Holderegger, Rolf Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution |
topic_facet |
Plant Science Ecology, Evolution, Behavior and Systematics |
description |
We investigated breeding system, germination capacity, and phenotypic variation within and among several populations of the arctic‐alpine Saxifraga aizoides from the periphery of its alpine distribution area in Switzerland. Flowers of S. aizoides proved to be self‐compatible, but crossing yielded much higher seed set than selfing. Agamospermy did not occur. This result fits well into a general lay‐out of the common breeding system in the genus Saxifraga. Germination of the pioneer species S. aizoides was fast and high in most populations and for most stratification and germination conditions. Nevertheless, a small, isolated population of this species exhibited a lower germination rate, possibly caused by enhanced inbreeding. Phenotypic variation, especially in petal colour and leaf shape, indicated considerable genetic variation within and among populations of S. aizoides. High germination capacity, successful selfing, and the possibility to maintain substantial intrapopulational genetic variation due to high outbreeding may play decisive roles in the maintenance of biogeographically outlying, relic populations of S. aizoides in the Swiss Plateau as well as in the colonization of new habitat patches. |
format |
Article in Journal/Newspaper |
author |
Meier, Christine Holderegger, Rolf |
author_facet |
Meier, Christine Holderegger, Rolf |
author_sort |
Meier, Christine |
title |
Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution |
title_short |
Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution |
title_full |
Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution |
title_fullStr |
Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution |
title_full_unstemmed |
Breeding system, germination, and phenotypic differences among populations of Saxifraga aizoides (Saxifragaceae) at the periphery of its alpine distribution |
title_sort |
breeding system, germination, and phenotypic differences among populations of saxifraga aizoides (saxifragaceae) at the periphery of its alpine distribution |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1111/j.1756-1051.1998.tb01550.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1756-1051.1998.tb01550.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1756-1051.1998.tb01550.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Saxifraga aizoides |
genre_facet |
Arctic Saxifraga aizoides |
op_source |
Nordic Journal of Botany volume 18, issue 6, page 681-688 ISSN 0107-055X 1756-1051 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1756-1051.1998.tb01550.x |
container_title |
Nordic Journal of Botany |
container_volume |
18 |
container_issue |
6 |
container_start_page |
681 |
op_container_end_page |
688 |
_version_ |
1794399880428388352 |