横断山区被子植物染色体研究概况

A Survey of Chromosome Numbers from Angiosperms of the Hengduan Mountains,S.W.China

横断山区作为全球生物多样性热点地区之一 ,染色体数目的研究对探讨植物区系起源和进化有重要的意义。本文对横断山区被子植物染色体数目报道方面的情况进行收集和整理并进行统计分析 ,结果发现共有 42科 1 4 3属 51 8种被子植物有染色体数目报道。

As one of the hottest spots of biodiversity in the world, the Hengduan Mountains region in SW China is attracting more and more attention. Data of chromosome numbers are very important for a better understanding of the origin and evolution of a given flora. Although a large number of species in angiosperms from the Hengduan Mountains region have been cytologically studied, a comprehensive statistic survey of their chromosome numbers is lacking. In this paper, the chromosome numbers of angiosperms in this region are surveyed. It is found that 518 species of 143 genera in 42 families of angiosperms in this region have had chromosome counts.