A
Alex Widmer
Researcher at ETH Zurich
Publications - 180
Citations - 9678
Alex Widmer is an academic researcher from ETH Zurich. The author has contributed to research in topics: Population & Silene latifolia. The author has an hindex of 53, co-authored 169 publications receiving 8643 citations. Previous affiliations of Alex Widmer include Indiana University & École Polytechnique Fédérale de Lausanne.
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The roles of genetic drift and natural selection in quantitative trait divergence along an altitudinal gradient in Arabidopsis thaliana.
TL;DR: Multivariate analyses suggested adaptive differentiation along altitude in the entire suite of traits, particularly when expressed in the summer-annual life history of Arabidopsis thaliana, and patterns relate well to common within- and between-species trends of smaller plant size and thicker leaves at high altitude.
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DNA Barcoding of Malagasy Rosewoods: Towards a Molecular Identification of CITES-Listed Dalbergia Species.
Sonja Hassold,Porter P. Lowry,Martin R. Bauert,Annick Razafintsalama,Lolona Ramamonjisoa,Alex Widmer +5 more
TL;DR: Testing whether DNA barcoding with partial sequences of three plastid markers can distinguish between Dalbergia from Madagascar and from other areas of its distributional range revealed both the value and limitations of a DNABarcoding approach for the identification of closely related Malagasy rosewoods.
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Pollen competition as an asymmetric reproductive barrier between two closely related Silene species
TL;DR: This study shows that pollen competition can be an effective barrier to hybridization between closely related species that likely acts in concert with other reproductive barriers.
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Chloroplast DNA Inheritance in the Orchid Anacamptis palustris Using Single-Seed Polymerase Chain Reaction
TL;DR: It is found that chloroplast DNA inheritance is strictly maternal in this Mediterranean orchid species, and this finding concurs with results obtained from PCR amplifications of pollen massulae that exclude the presence of chloroplowlast DNA in the pollen tetrads.
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The role of chromosomal rearrangements in the evolution of Silene latifolia sex chromosomes
TL;DR: In this article, the authors combine results from physical mapping of sex-linked genes using polymerase chain reaction on microdissected arms of the S. latifolia X chromosome, and fluorescence in situ hybridization analysis of a new cytogenetic marker, Silene tandem repeat accumulated on the Y chromosome.