Article
Nuclear and plastid haplotypes suggest rapid diploid and polyploid speciation in the N Hemisphere Achillea millefolium complex (Asteraceae).
BMC evolutionary biology - 3 Jan 2012
Guo Yan-Ping, Wang Shuai-Zhen, Vogl Claus, Ehrendorfer Friedrich
Abstract excerpt
BACKGROUND: Species complexes or aggregates consist of a set of closely related species often of different ploidy levels, whose relationships are difficult to reconstruct. The N Hemisphere Achillea millefolium aggregate exhibits complex morphological and genetic variation and a broad ecological amplitude. To understand its evolutionary history, we study sequence variation at two nuclear genes and three plastid...
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