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

本项目主要研究北半球分离分布的葱属植物的系统地理学、系统发育和系统分类学。详细的Amerallium亚属（主要集中在欧亚种）和anguum亚属的分子系统发育，包括分布日期、生态学、染色体数目和这些亚属物种的形态，将用于重建系统地理学，并了解欧亚和北美分离分布的起源和发展。本文通过对东半球分离的Allium属（Anguinum和Amerallium亚属）分类群的核- （ITS和ETS）和cpDNA （trnL-trnF, matK, rbcL-atpB）位点的多基因分析，探讨了这两个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.