睫毛萼凤仙花核型研究

摘要

The karyotype of Impatiens blepharosepala was observed and analyzed, taking young root tip of Impatiens blepharosepala as material, to know its chromosome number and karyotype and provide cytology basis for phylogenetic systematics. The results showed that Impatiens blepharosepala has 14 chromosomes and the karyotype formula is 2n=2x=14=14m, it belongs to lA type in Stebbins taxonomy, a more original and symmetrical karyotype.%为弄清睫毛萼凤仙花的染色体数目及核型情况,为其系统分类提供细胞学依据,特选取睫毛萼凤仙花的幼嫩根尖作材料,处理制片观察分析其核型.结果表明:睫毛萼凤仙花具14条染色体,核型公式为2n=2x=14=14 m,属Stebbins分类中的1A型,较为原始的对称核型.