Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers
Alkali grasses (Puccinellia) are temperate and arctic grasses of coastal and alkaline habitats, with ploidy levels that range from diploid to octoploid. This paper investigates the species limits of diploid alkali grasses in the North American Arctic. We used flow cytometry to confirm that four to s...
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The American Society of Plant Taxonomists
2008
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ftbioone:10.1600/036364408784571662 2023-07-30T04:00:43+02:00 Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers Laurie L. Consaul Lynn J. Gillespie Marcia J. Waterway Laurie L. Consaul Lynn J. Gillespie Marcia J. Waterway world 2008-04-01 text/HTML https://doi.org/10.1600/036364408784571662 en eng The American Society of Plant Taxonomists doi:10.1600/036364408784571662 All rights reserved. https://doi.org/10.1600/036364408784571662 Text 2008 ftbioone https://doi.org/10.1600/036364408784571662 2023-07-09T09:37:35Z Alkali grasses (Puccinellia) are temperate and arctic grasses of coastal and alkaline habitats, with ploidy levels that range from diploid to octoploid. This paper investigates the species limits of diploid alkali grasses in the North American Arctic. We used flow cytometry to confirm that four to seven of the 13–19 initially recognized taxa in the North American Arctic are diploid. Multivariate analyses of both morphological and amplified fragment length polymorphism (AFLP) data were congruent in resolving five or six diploid species: 1) P. arctica of northern and western distribution, including P. agrostidea and P. poacea; 2) a new diploid species from Banks Island, N.W.T., Canada; 3) P. tenella subsp. langeana; 4) P. alaskana, which had been previously treated as a subspecies of P. tenella; and 5) circumpolar (except coastal Beringia) P. vahliana, from which 6) the coastal Beringian endemic P. wrightii is distinguishable only on size and for which subspecies status may be more appropriate. In common garden experiments, eleven of 21 quantitative morphological characters varied significantly between field and common garden, showing phenotypic plasticity that explains much of the difficulty in identification. We present a map showing known geographic ranges of diploid Puccinellia species in the North American Arctic. Text Arctic Banks Island Beringia BioOne Online Journals Arctic Canada Systematic Botany 33 2 251 261 |
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English |
description |
Alkali grasses (Puccinellia) are temperate and arctic grasses of coastal and alkaline habitats, with ploidy levels that range from diploid to octoploid. This paper investigates the species limits of diploid alkali grasses in the North American Arctic. We used flow cytometry to confirm that four to seven of the 13–19 initially recognized taxa in the North American Arctic are diploid. Multivariate analyses of both morphological and amplified fragment length polymorphism (AFLP) data were congruent in resolving five or six diploid species: 1) P. arctica of northern and western distribution, including P. agrostidea and P. poacea; 2) a new diploid species from Banks Island, N.W.T., Canada; 3) P. tenella subsp. langeana; 4) P. alaskana, which had been previously treated as a subspecies of P. tenella; and 5) circumpolar (except coastal Beringia) P. vahliana, from which 6) the coastal Beringian endemic P. wrightii is distinguishable only on size and for which subspecies status may be more appropriate. In common garden experiments, eleven of 21 quantitative morphological characters varied significantly between field and common garden, showing phenotypic plasticity that explains much of the difficulty in identification. We present a map showing known geographic ranges of diploid Puccinellia species in the North American Arctic. |
author2 |
Laurie L. Consaul Lynn J. Gillespie Marcia J. Waterway |
format |
Text |
author |
Laurie L. Consaul Lynn J. Gillespie Marcia J. Waterway |
spellingShingle |
Laurie L. Consaul Lynn J. Gillespie Marcia J. Waterway Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers |
author_facet |
Laurie L. Consaul Lynn J. Gillespie Marcia J. Waterway |
author_sort |
Laurie L. Consaul |
title |
Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers |
title_short |
Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers |
title_full |
Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers |
title_fullStr |
Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers |
title_full_unstemmed |
Systematics of North American Arctic Diploid Puccinellia (Poaceae): Morphology, DNA Content, and AFLP Markers |
title_sort |
systematics of north american arctic diploid puccinellia (poaceae): morphology, dna content, and aflp markers |
publisher |
The American Society of Plant Taxonomists |
publishDate |
2008 |
url |
https://doi.org/10.1600/036364408784571662 |
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world |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Banks Island Beringia |
genre_facet |
Arctic Banks Island Beringia |
op_source |
https://doi.org/10.1600/036364408784571662 |
op_relation |
doi:10.1600/036364408784571662 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1600/036364408784571662 |
container_title |
Systematic Botany |
container_volume |
33 |
container_issue |
2 |
container_start_page |
251 |
op_container_end_page |
261 |
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1772811276028739584 |