赖草属植物的分类现状及主要存在的问题

摘要

赖草属(Leymus Hochst.)为禾本科(Poaceae)小麦族(Triticeae)中的一个有重要经济价值的属，属内多数种类是优良牧草，有些种类具有耐寒、耐旱、耐碱等特性，是农业良种繁育、畜牧业牧草改良利用的重要基因资源。该属在分类学上是一个疑难属，在属的界限、属下组系的划分，以及类群间演化关系上问题较多。对赖草属分类学问题进行了综述，为赖草属植物资源的开发利用和保护提供资料。%Leymus Hochst. is a genus with important economic value in Triticeae (Poaceae). Most of Leymus species are forage grasses for animal husbandry. Some species used as important germplasm resources for grass breeding and improving breeds of crops due to the characteristics of enduring cold, drought, and alkali. Many unresolved taxonomic questions are present in Leymus, such as the generic limit/circumstance, the species delimitation, and the interspeciifc phylogenetic relationships. A taxonomic review of the genus was provided in order to accumulate background knowledge for further utilization of Leymus.