Phylogenetic systematics of Sternbergia (Amaryllidaceae) based on plastid and ITS sequence data |
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| Authors: | EWAN GAGE PAUL WILKIN MARK W CHASE JULIE HAWKINS |
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| Institution: | 1. Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK;2. Department of Plant Sciences, Downing Street, Cambridge, CB2 3EA, UK;3. Plant Science Laboratories, The University of Reading, Whiteknights, Reading, RG6 6AS, UK |
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| Abstract: | The phylogenetics of Sternbergia (Amaryllidaceae) were studied using DNA sequences of the plastid ndhF and matK genes and nuclear internal transcribed spacer (ITS) ribosomal region for 38, 37 and 32 ingroup and outgroup accessions, respectively. All members of Sternbergia were represented by at least one accession, except S. minoica and S. schubertii, with additional taxa from Narcissus and Pancratium serving as principal outgroups. Sternbergia was resolved and supported as sister to Narcissus and composed of two primary subclades: S. colchiciflora sister to S. vernalis, S. candida and S. clusiana, with this clade in turn sister to S. lutea and its allies in both Bayesian and bootstrap analyses. A clear relationship between the two vernal flowering members of the genus was recovered, supporting the hypothesis of a single origin of vernal flowering in Sternbergia. However, in the S. lutea complex, the DNA markers examined did not offer sufficient resolving power to separate taxa, providing some support for the idea that S. sicula and S. greuteriana are conspecific with S. lutea. © 2011 The Linnean Society of London, Botanical Journal of the Linnean Society, 2011, 166 , 149–162. |
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| Keywords: | Mediterranean flora phylogenetics |
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