PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION
Patterns of morphological variation were studied in herbarium specimens of Stellaria longipes , an herbaceous perennial and subsequently in a growth chamber experiment using three cytotypes (4 x , 6 x , 8 x ) of S. longipes and diploids of its proposed progenitor S. longifolia. Despite extensive phe...
Published in: | American Journal of Botany |
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Online Access: | http://dx.doi.org/10.1002/j.1537-2197.1988.tb08832.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fj.1537-2197.1988.tb08832.x https://onlinelibrary.wiley.com/doi/full/10.1002/j.1537-2197.1988.tb08832.x |
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crwiley:10.1002/j.1537-2197.1988.tb08832.x 2024-06-02T08:02:24+00:00 PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION Macdonald, S. Ellen Chinnappa, C. C. Natural Sciences and Engineering Research Council of Canada 1988 http://dx.doi.org/10.1002/j.1537-2197.1988.tb08832.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fj.1537-2197.1988.tb08832.x https://onlinelibrary.wiley.com/doi/full/10.1002/j.1537-2197.1988.tb08832.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Botany volume 75, issue 8, page 1191-1200 ISSN 0002-9122 1537-2197 journal-article 1988 crwiley https://doi.org/10.1002/j.1537-2197.1988.tb08832.x 2024-05-03T11:34:16Z Patterns of morphological variation were studied in herbarium specimens of Stellaria longipes , an herbaceous perennial and subsequently in a growth chamber experiment using three cytotypes (4 x , 6 x , 8 x ) of S. longipes and diploids of its proposed progenitor S. longifolia. Despite extensive phenotypic plasticity in many traits, patterns of variation resulting from ecotypic differentiation within S. longipes could be detected in the field. A distinct form of S. longipes , which is restricted primarily to arctic and alpine tundra locations, shows genetic differentiation for the following traits: few flowers per ramet, a low proportion of flowering ramets, and ovate leaves. The three cytotypes of S. longipes could be distinguished by their mean genotypic value for leaf length and number of flowers per ramet. The extent of phenotypic plasticity in these traits makes it unlikely that the cytotypes could be distinguished in the field. The direction and extent of morphological divergence between S. longifolia and S. longipes suggest an alloploid origin for S. longipes. Variational trends (among‐habitat types and cytotypes) in trait means are similar to those reported previously for the pattern of plasticity. This supports the argument that similar forces guide evolution of the mean and pattern of plasticity of a trait. Article in Journal/Newspaper Arctic Stellaria longipes Tundra Wiley Online Library Arctic American Journal of Botany 75 8 1191 1200 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Patterns of morphological variation were studied in herbarium specimens of Stellaria longipes , an herbaceous perennial and subsequently in a growth chamber experiment using three cytotypes (4 x , 6 x , 8 x ) of S. longipes and diploids of its proposed progenitor S. longifolia. Despite extensive phenotypic plasticity in many traits, patterns of variation resulting from ecotypic differentiation within S. longipes could be detected in the field. A distinct form of S. longipes , which is restricted primarily to arctic and alpine tundra locations, shows genetic differentiation for the following traits: few flowers per ramet, a low proportion of flowering ramets, and ovate leaves. The three cytotypes of S. longipes could be distinguished by their mean genotypic value for leaf length and number of flowers per ramet. The extent of phenotypic plasticity in these traits makes it unlikely that the cytotypes could be distinguished in the field. The direction and extent of morphological divergence between S. longifolia and S. longipes suggest an alloploid origin for S. longipes. Variational trends (among‐habitat types and cytotypes) in trait means are similar to those reported previously for the pattern of plasticity. This supports the argument that similar forces guide evolution of the mean and pattern of plasticity of a trait. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Macdonald, S. Ellen Chinnappa, C. C. |
spellingShingle |
Macdonald, S. Ellen Chinnappa, C. C. PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION |
author_facet |
Macdonald, S. Ellen Chinnappa, C. C. |
author_sort |
Macdonald, S. Ellen |
title |
PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION |
title_short |
PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION |
title_full |
PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION |
title_fullStr |
PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION |
title_full_unstemmed |
PATTERNS OF VARIATION IN THE STELLARIA LONGIPES COMPLEX: EFFECTS OF POLYPLOIDY AND NATURAL SELECTION |
title_sort |
patterns of variation in the stellaria longipes complex: effects of polyploidy and natural selection |
publisher |
Wiley |
publishDate |
1988 |
url |
http://dx.doi.org/10.1002/j.1537-2197.1988.tb08832.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fj.1537-2197.1988.tb08832.x https://onlinelibrary.wiley.com/doi/full/10.1002/j.1537-2197.1988.tb08832.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Stellaria longipes Tundra |
genre_facet |
Arctic Stellaria longipes Tundra |
op_source |
American Journal of Botany volume 75, issue 8, page 1191-1200 ISSN 0002-9122 1537-2197 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/j.1537-2197.1988.tb08832.x |
container_title |
American Journal of Botany |
container_volume |
75 |
container_issue |
8 |
container_start_page |
1191 |
op_container_end_page |
1200 |
_version_ |
1800746893769179136 |