兰州百合B染色体的初步研究  

Preliminary study on B-chromosomes of Lilium davidii var.unicolor

作　　者：陈丽梅[1] 李雪[1] 杜捷[1] 梁万福[1] 幸亨泰[1] 

机构地区：[1]西北师范大学生命科学学院,兰州730070

出　　处：《西北植物学报》2003年第11期2007-2010,共4页Acta Botanica Boreali-Occidentalia Sinica

基　　金：西北师范大学科技创新工程资助项目(NWNU-KJCXGC-02)

摘　　要：对兰州百合具B染色体的细胞在有丝分裂和减数分裂过程中的行为进行了观察。结果表明,B染色体数在0～3之间变化,在有丝分裂和减数分裂中均高度异染色质化,分离具有不定向性,出现少量累积。通过比较两种生境中B染色体出现的频率,认为B染色体的有或无可能与兰州百合的适应性有关。The authors have observed the behaviours at mitosis and meiosis in Lilium davidii var.unicolor which has B-chromosomes.The results show that the number of B-chromosomes varies from 0 to 3.B-chromosomes is heterochromatization in the process of mitosis and meiosis.The segregation of B-chromosomes is irregular,so it will accumulate in small numbers.Through comparing the rate of the B-chromosomes in two environment conditions,the authors think that B-chromosomes has a relation with the adaptation of the Lilium davidii var.unicolor.

关 键 词：兰州百合 B-染色体 有丝分裂 减数分裂 

分 类 号：Q943[生物学—植物学]