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选用10种容易得到且培养方便的植物根尖做实验材料,用几种不同染色方法,观察植物细胞有丝分裂。结果显示,蚕豆侧根、小麦根、玉米根完全可代替现行课本选用材料——洋葱根尖,且蚕豆侧根、小麦根在培养方法、细胞有丝分裂出现的时间和持续时间、染色体大小及染色后视野的清晰度均优于洋葱,是这一实验较好的替代材料。
Ten kinds of plant root tips which are easy to be obtained and cultivated are selected as experimental materials. Several different staining methods are used to observe plant cell mitosis. The results showed that broad bean lateral root, wheat root and corn root can completely replace the current textbook selection material - onion root tip, and the lateral root of broad bean, wheat root in culture method, the time and duration of cell mitosis, chromosome size and visual field after dyeing Clarity are better than onions, is a good alternative to this experiment material.