荧光染色观察钝节拟丽藻中无丝分裂的研究

用DAPI荧光染色法对处于不同生长时期钝节拟丽藻(Nitellopsis obtuse)的节间,小枝,苞片,节部及假根中细胞的细胞核的分裂方式进行了研究,发现无丝分裂是钝节拟丽藻藻体细胞核的唯一分裂方式.在细胞核无丝分裂过程中,染色质不发生浓缩,不形成染色体,核膜不解体,核的分裂部位不定,产生的子核大小,形状各异.

Observations with Fluorescent Staining of Amitosis in Nitellopsis obtuse

The nucleus divisions were observed by using DAPI staining the different cells of Nitellopsis obtuse included internodal cells,branch cells,bract cells,nodal cells and rhizoid cells which in different periods.The results showed that amitosis is the only division in Nitellopsis obtuse.In the process of amitotic divisions,the nucleus are have no chromatin condensation,the existence of chromosomes and the disappearance of nuclear membrane.The positions of the nucleus cleaving are uncertain.The shape and size o...