Eurasian - North American disjunctive distribution of the genus Allium. Origin and historic biogeography of the subgenera Amerallium and Anguinum

该项目集中研究洋葱属(葱科)的系统地理、系统发育和系统分类，其在北半球的分布是错综复杂的。详细的美洲葱属(主要集中在欧亚种)和鳗属的分子系统学，包括分布日期、生态、染色体数目和这些亚属的种的形态，将被用来重建系统地理和了解欧亚和北美分离分布在葱属的起源和发展。在对东半球和新大陆分离的洋葱属分类群的核(ITS和ETS)和cpDNA(trnL-trnF，matK，rbcL-atpB)基因座进行多基因分析的基础上，我们将探讨分离分类群的系统发育关系和分化模式。

The project concentrates on phylogeography, phylogeny and systematics of taxa of the onion genus Allium (family Alliaceae) with disjunctive distributions in the northern hemisphere. A detailed molecular phylogeny of subgenera Amerallium (with main focus on Eurasian species) and Anguinum, including date of distribution, ecology, chromosome number and morphology of the species of these subgenera will be used to reconstruct of the phylogeography and for understanding of the origin and development of Eurasian and North American disjunctive distributions in the genus Allium. On the basis of multiple gene analyses of nuclear- (ITS and ETS) and cpDNA (trnL-trnF, matK, rbcL-atpB) loci for taxa of the genus Allium (subgenera Anguinum and Amerallium), with Old World and New World disjunction, we will examine phylogenetic relationships and patterns of differentiation of the disjunctive taxa.