白刺属的系统进化和生物多样性研究进展  

Progress of researches on systematic and biodiversity in the genus Nitraria L.

作　　者：潘晓云[1] 曹琴东[2] 尉秋实[3] 王根轩[1] 

机构地区：[1]兰州大学干旱农业生态国家重点实验室,兰州730000 [2]甘肃省绿色食品办公室,兰州730030 [3]甘肃省治沙研究所民勤沙生植物园,武威733300

出　　处：《中国医学生物技术应用》2002年第4期1-6,56,共7页The Chinese Academic Medical Magazine of Organisms

基　　金：国家自然科学基金项目基金编号90103015;国家重点基础研究专项经费资助基金编号G1999011705

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。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.

关 键 词：白刺属 分类 进化 多倍化 染色体数目 民族植物学 

分 类 号：Q949[生物学—植物学]