Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications
Frequency data from six polymorphic allozyme loci and measurements of six quantitative traits were used to examine geographic differentiation among 65 British Columbia provenances of red alder (Alnus rubra Bong.). Principal components analysis showed that variation in quantitative traits can be redu...
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1998
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Online Access: | http://dx.doi.org/10.1139/x98-135 http://www.nrcresearchpress.com/doi/pdf/10.1139/x98-135 |
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crcansciencepubl:10.1139/x98-135 2024-09-15T18:12:27+00:00 Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications Hamann, Andreas El-Kassaby, Y A Koshy, M P Namkoong, G 1998 http://dx.doi.org/10.1139/x98-135 http://www.nrcresearchpress.com/doi/pdf/10.1139/x98-135 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Forest Research volume 28, issue 10, page 1557-1565 ISSN 0045-5067 1208-6037 journal-article 1998 crcansciencepubl https://doi.org/10.1139/x98-135 2024-07-25T04:10:06Z Frequency data from six polymorphic allozyme loci and measurements of six quantitative traits were used to examine geographic differentiation among 65 British Columbia provenances of red alder (Alnus rubra Bong.). Principal components analysis showed that variation in quantitative traits can be reduced to two underlying dimensions, one representing general vigor including the termination of the growing period and the other being the start of the growing period. Canonical correlation analysis among quantitative traits, allozyme frequencies, and geographic variables revealed complex associations of quantitative traits with the latitude, distance to the coast, and elevation of the seed source. There were no significant correlations among allozyme frequencies and quantitative traits, but the frequency of the most common allele at most loci decreased with latitude. Further, cluster analysis based on Nei's genetic distance revealed a strong differentiation among island and mainland provenances at one allozyme locus. This differentiation can be interpreted as a result of migration from two different refugia since the last glaciation. The island populations presumably originate solely from isolated coastal refugia west of the Cordilleran ice sheet, while mainland populations were also recruited from areas south of the ice. Article in Journal/Newspaper Ice Sheet Canadian Science Publishing Canadian Journal of Forest Research 28 10 1557 1565 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Frequency data from six polymorphic allozyme loci and measurements of six quantitative traits were used to examine geographic differentiation among 65 British Columbia provenances of red alder (Alnus rubra Bong.). Principal components analysis showed that variation in quantitative traits can be reduced to two underlying dimensions, one representing general vigor including the termination of the growing period and the other being the start of the growing period. Canonical correlation analysis among quantitative traits, allozyme frequencies, and geographic variables revealed complex associations of quantitative traits with the latitude, distance to the coast, and elevation of the seed source. There were no significant correlations among allozyme frequencies and quantitative traits, but the frequency of the most common allele at most loci decreased with latitude. Further, cluster analysis based on Nei's genetic distance revealed a strong differentiation among island and mainland provenances at one allozyme locus. This differentiation can be interpreted as a result of migration from two different refugia since the last glaciation. The island populations presumably originate solely from isolated coastal refugia west of the Cordilleran ice sheet, while mainland populations were also recruited from areas south of the ice. |
format |
Article in Journal/Newspaper |
author |
Hamann, Andreas El-Kassaby, Y A Koshy, M P Namkoong, G |
spellingShingle |
Hamann, Andreas El-Kassaby, Y A Koshy, M P Namkoong, G Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications |
author_facet |
Hamann, Andreas El-Kassaby, Y A Koshy, M P Namkoong, G |
author_sort |
Hamann, Andreas |
title |
Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications |
title_short |
Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications |
title_full |
Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications |
title_fullStr |
Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications |
title_full_unstemmed |
Multivariate analysis of allozymic and quantitative trait variation in Alnus rubra: geographic patterns and evolutionary implications |
title_sort |
multivariate analysis of allozymic and quantitative trait variation in alnus rubra: geographic patterns and evolutionary implications |
publisher |
Canadian Science Publishing |
publishDate |
1998 |
url |
http://dx.doi.org/10.1139/x98-135 http://www.nrcresearchpress.com/doi/pdf/10.1139/x98-135 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal of Forest Research volume 28, issue 10, page 1557-1565 ISSN 0045-5067 1208-6037 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/x98-135 |
container_title |
Canadian Journal of Forest Research |
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28 |
container_issue |
10 |
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1557 |
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1565 |
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1810450028339134464 |