昆明梁王山多星韭与滇韭的核型比较

Comparative Analysis on Karyotype of Allium wallichii and Allium mairei from Mount Liangwang in Kunming Area

摘要: 对梁王山地区多星韭与滇韭种群的染色体进行核型比较与分析。结果表明：多星韭1号种群为二倍体，核型公式为：2n=2x=14=10m(2SAT)+4sm ;2号种群为四倍体，核型公式为：2n=4x=28=18sm(2SAT)+10m;滇韭1号和2号种群均为二倍体，核型公式为：2n=2x=16=14m+2sm (2SAT)，不发生倍性变化;二者在染色体水平上亲缘关系较近，在二者系统发育过程中，多星韭可能是一个较进化的类群。

Abstract: The karyotypes of Allium wallichii and A.mairei from Mount Liangwang were comparatively analyzed. The results showed that population No.1 of A. wallichii was diploid, whose karyotype formula was 2n=2x=14=10m(2SAT)+4sm. Population No.2 of A. wallichii was tetraploid, whose karyotype formula was 2n=4x=28=18sm(2SAT)+10m. Both of the populations No.1 and No.2 of A. mairei was diploid, whose karyotype formulae was 2n=2x=16=14m+2sm (2SAT), there was no ploidy happened. It was concluded that A. wallichii had close genetic relationship with A. mairei at the chromosome level, and A. wallichii might be an advanced group in the development process compared to A. mairei.