Genomic Studies of Local Adaptation in Natural Plant Populations

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Genomic Studies of Local Adaptation in Natural Plant Populations.

Local adaptation arises as a result of selection by the local environment favoring phenotypes that enhance fitness. Geographic patterns of phenotypic variation are in part due to this selective process. Classically, the genetic basis of those phenotypes has been studied in plant populations using a quantitative genetic approach in which plants from different source populations are grown in comm...

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Studies of the genetic basis of adaptive changes in natural populations are now addressing questions that date back to the beginning of evolutionary biology, such as whether evolution proceeds in a gradual or discontinuous manner, and whether convergent evolution involves convergent genetic changes. Studies that combine quantitative genetics and population genomics provide a powerful tool for i...

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The process of local adaptation creates diversity among allopatric populations, and may eventually lead to speciation. Plant-feeding insect populations that specialize on different host species provide an excellent opportunity to evaluate the causes of ecological specialization and the subsequent consequences for diversity. In this study, we used geographically separated Drosophila mettleri pop...

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Local adaptation, phenotypic differentiation, and hybrid fitness in diverged natural populations of Arabidopsis lyrata.

Selection for local adaptation results in genetic differentiation in ecologically important traits. In a perennial, outcrossing model plant Arabidopsis lyrata, several differentiated phenotypic traits contribute to local adaptation, as demonstrated by fitness advantage of the local population at each site in reciprocal transplant experiments. Here we compared fitness components, hierarchical to...

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ژورنال

عنوان ژورنال: Journal of Heredity

سال: 2017

ISSN: 0022-1503,1465-7333

DOI: 10.1093/jhered/esx091