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Abstract Detail

Systematics Section/ASPT

Bruun-Lund, Sam [1], Davis, Aaron P. [2], Zubov, Dima [3], Rønsted, Nina [1].

Snowdrops falling slowly into place: a phylogenetic hypothesis of Galanthus (Amaryllidaceae).

Snowdrops (Galanthus, 20 spp.; European Amaryllidaceae) are cherished garden plants and the world's most traded wild-sourced ornamental bulb genus. Despite their popularity and economic importance, species delimitation is problematic and the infrageneric classification uncertain. We present a molecular phylogenetic study of Galanthus with the aim of resolving these issues and to better understand the evolution of the species within the genus. Sequences of nuclear encoded nrITS,and plastid encoded matK, trnLF, ndhF, and psbK-psbI, of all currently recognised species and two naturally occurring putative hybrids were analysed using maximum parsimony and Bayesian inference. Phylogenetic analysis of Galanthus,based on nuclear ITS sequences, provides a well resolved topology with strong support for most clades, including seven named clades (platyphyllus, trojanus, ikariae,elwesii, nivalis, woronowii, and alpinus, and five (A-E) major clades. The recovered ITS topology also corresponds well with biogeography. The combined plastid data set provides far less resolution than ITS, with generally lower levels of statistical support, and one case of significant incongruence with the ITS dataset involving Galanthus gracilis. ITS and plastid data indicates that several Galanthus species are in need of taxonomic recircumscription.

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1 - Natural History Museum of Denmark, Sølvgade 83, Copenhagen , DK-1307, Denmark
2 - Royal Botanic Gardens, Kew, The Herbarium, Kew, Richmond, TW9 3AB, UK
3 - M.M. Gryshko National Botanic Garden, Timiriazevskaya 1, Kiev, 01014, Ukraine


Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PSY059
Abstract ID:113
Candidate for Awards:None

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