【摘要】 在回顾白刺属研究历史的基础上,根据白刺属种间染色体倍数特征并结合形态学、生物地理学等方面的研究文献,提出新的白刺属种间分类系统:二倍体组(2n=2X=24)和四倍体组(2n=4X=48)。多倍化(2X→4X)是白刺属内种间进化的基本特征。白刺属的起源中心可能是古地中海沿岸地区;中亚及我国西北地区是白刺属的现代分布中心。并指出将该属作为模式系统来开展具有我国特色的民族植物学研究的前景。更多还原

【Abstract】 Nitraria L. is a widespread family of some 12 species from Africa, Asia, Europe and Australia. Taxo-nomic relationships of the species have been subject to a wide diversity of opinion. Based on the number of chromosome,and combined with morphological and geobiological data of 12 species in genus Nitraria L., they were divided intotwo groups: diploid group (2n=2X=24) and tetraploid group (2n=4X=48). And polyploidy (2X→ 4X) is a basicevolutionary trend in the diversification of plants in genus Nitraria L.. A possible original site of the genus Nitraria L.is the coastwise of ancient Mediterranean. The central Asian and the northwestern China are its modern center ofdistribution. An ethnobotany applied perspective on this desert plant species was also suggested.更多还原