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Population genetic analysis of Bromus tectorum (Poaceae) indicates recent range expansion may be facilitated by specialist genotypesAuthor(s): Keith R. Merrill; Susan E. Meyer; Craig E. Coleman
Source: American Journal of Botany. 99(3): 529-537.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
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DescriptionThe mechanisms for range expansion in invasive species depend on how genetic variation is structured in the introduced range. This study examined neutral genetic variation in the invasive annual grass Bromus tectorum in the Intermountain Western United States. Patterns of microsatellite (SSR) genotype distribution in this highly inbreeding species were used to make inferences about the roles of adaptively signifi cant genetic variation, broadly adapted generalist genotypes, and facultative outcrossing in the recent range expansion of B. tectorum in this region.
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CitationMerrill, Keith R.; Meyer, Susan E.; Coleman, Craig E. 2012. Population genetic analysis of Bromus tectorum (Poaceae) indicates recent range expansion may be facilitated by specialist genotypes. American Journal of Botany. 99(3): 529-537.
KeywordsBromus tectorum, cheatgrass, downy brome, ecological genetics, inbreeding, invasive species, local adaptation, microsatellite, Poaceae
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