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|a (JST)41972307
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|e rakwb
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|a eng
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|a Noyes, Richard D.
|e verfasserin
|4 aut
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|a GEOGRAPHY AND PHYLOGENY OF SEXUAL DIPLOID ERIGERON STRIGOSUS (ASTERACEAE) IN ARKANSAS AND MISSOURI
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
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|a Online-Ressource
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|a Erigeron strigosus (Asteraceae) is a complex species consisting of a diversity of sexual diploid and apomictic polyploid populations. Previous work has established the geographic distribution and phylogenetic relationships among sexual diploid populations in the extreme southeastern United States. In this work we investigated disjunct sexual diploid populations in Arkansas and Missouri. We evaluated pollen quality and mapped geographic locations for 496 unique herbarium collections to determine that sexual populations are relatively common in Arkansas (37 out of 286 collections; 12.9%), especially in upland habitats in the western 2/3 of the state, but rare in Missouri (1 out of 210 collections; 0.5%). Eight rDNA (ITS plus ETS) sequences for seven populations reveal that sexual diploid E. strigosus from Arkansas is not genetically differentiated from other populations that have been studied. However, two genetic lineages were detected; those from the Ozark Highlands correspond to previously described rDNA haplotype II while samples from more southerly ecoregions correspond to previously described rDNA haplotype III. This work fills in a large gap in the knowledge of the distribution of genetic variation and lends insight into the phylogeography of the complex. Erigeron strigosus (Asteraceae) es un complejo de especies que consiste en una diversidad de poblaciones sexuales diploides y apomícticas poliploides. Trabajos previos han establecido la distribución geográfica y las relaciones filogenéticas entre las poblaciones sexuales diploides del extremo sureste de los Estados Unidos. En este trabajo investigamos las poblaciones sexuales diploides disyuntas de Arkansas y Missouri. Hemos evaluado la calidad del polen y mapeado las localidades geográficas de 496 colecciones de herbario únicas para determinar que las poblaciones sexuales son relativamente comunes en Arkansas (37 de 286 colecciones; 12.9%), especialmente en los habitats de las tierras altas de los 2/3 occidentales del estado, pero son raras en Missouri (1 de 210 colecciones; 0.5%). Ocho secuencias rDNA (ITS y ETS) de siete poblaciones revelaron que el diploide sexual E. strigosus de Arkansas no se diferencia genéticamente de otras poblaciones que se han estudiado. Sin embargo, se detectaron dos linajes genéticos; los de Ozark Highlands que corresponden al haplotipo II de rDNA previamente descrito mientras que muestras de ecorregiones más al sur corresponden al haplotipo III de rDNA previamente descrito. Este trabajo llena un gran hueco en el conocimiento de la distribución de la variación genética y permite una percepción de la filogeografía del complejo.
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|a 2011 Botanical Research Institute of Texas (BRIT)
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4 |
|a Biological sciences
|x Biology
|x Genetics
|x Molecular genetics
|x Gene expression
|x Diploidy
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plants
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Ecological zones
|x Ecoregions
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Genetics
|x Cytogenetics
|x Ploidies
|x Polyploidy
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Topography
|x Highlands
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Genetics
|x Genotypes
|x Haplotypes
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| 650 |
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|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Plant communities
|x Forests
|x Glades
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| 650 |
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4 |
|a Physical sciences
|x Chemistry
|x Chemical compounds
|x Chemicals
|x Acids
|x Nucleic acids
|x DNA
|x Ribosomal DNA
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Genetics
|x Population genetics
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| 650 |
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4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Horticulture
|x Plant collections
|x Herbaria
|x SYSTEMATICS
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| 655 |
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|a research-article
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| 700 |
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|a Groff, Dulcinea V.
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of the Botanical Research Institute of Texas
|d Botanical Research Institute of Texas
|g 5(2011), 2, Seite 577-586
|w (DE-627)729014452
|w (DE-600)2688544-X
|x 19345259
|7 nnns
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| 773 |
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|g volume:5
|g year:2011
|g number:2
|g pages:577-586
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|u https://www.jstor.org/stable/41972307
|3 Volltext
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|a AR
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|d 5
|j 2011
|e 2
|h 577-586
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