我们在观察植物细胞有丝分裂的实验时,摸索出一点较简便的方法,现介绍如下: 洋葱根尖的培养我们采用沙盘法培养根尖.即盘中铺二寸左右厚的河沙,把选好的洋葱头并排埋入沙中约1/4,浇透水.夏天放在窗台上,冬天放在暖气旁或火炕上,两天就可取用.待根尖长到约一厘米长时进行固定为好(根过长时,根尖细胞分裂较慢).根尖固定最好在 We observe the plant cell mitosis experiments, to explore a little more simple method, are as follows: onion root tip culture we use the sand culture root tip, which is about two inches thick trays shop sand, the selected The onion head side by side buried in the sand about 1/4, drenched water on the summer on the windowsill in the winter on the heating or on the kang, two days is available until the apical long to about one centimeter long fixed Good (root is too long, the root tip cells divide more slowly)