论文部分内容阅读
目的:试图利用核型参数对药用植物进行鉴定并探索植物之间的遗传进化距离。方法:利用柴胡属6种植物的核型数据,应用核型似近系数聚类分析并计算物种间的核型进化距离。结果:红柴胡Bupleurum scorzonerifolium与北柴胡B.chinense核型似近系数最大(0.992 0),核型进化距离最小(0.008 0),亲缘关系最近;黑柴胡B.smityii与川岛柴胡B.falcatum核型似近系数最小(0.479 4),核型进化距离最大(0.735 2),亲缘关系最远;结论:植物的核型具有物种稳定性,是鉴定药用植物的重要参数。通过对柴胡属植物核型似近系数的聚类分析得出了不同物种间的遗传距离,在6种柴胡属植物中,不同染色体数目的物种表现出较远的遗传距离。
OBJECTIVE: To attempt to use karyotype parameters to identify medicinal plants and to explore the genetic evolution distance between plants. Methods: Based on the karyotype data of 6 species of Bupleurum, karyotype similar near coefficient clustering analysis was used to calculate the karyotype evolution distance among species. Results: The karyotypes of Bupleurum scorzonerifolium and B.chinense were the highest (0.992 0) and the smallest was the karyotype (0.008 0) The closest karyotype of B.falcatum was the smallest (0.479 4), the largest was the karyotypic evolutionary distance (0.735 2), and the kinship was the most distant. Conclusion: The karyotype of plants has species stability and is an important parameter for identification of medicinal plants. The genetic distances among different species were obtained by cluster analysis of the similar karyotypes of Bupleurum species. Among 6 species of Bupleurum, the species numbers of different chromosomes showed a far genetic distance.