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观察植物细胞有丝分裂常用洋葱根尖为材料。我们在教学工作中,用韭菜幼叶作材料效果也相当满意。具体做法如下: 取新鲜的韭菜(Allium tuberosum Rottler ex Sprengel)植株,除掉上部绿叶,洗净后纵切成两半,从鳞茎以上约1.5厘米以内的中心部分的幼叶(白色或浅黄色),切成约2毫米长的小段,放入玻皿中,加入浓盐酸和95％酒精的混合液(1:1或
Observed plant cell mitosis commonly used onion root tip material. We are teaching work, leek young leaves for material effect is quite satisfactory. The procedure is as follows: Take allium tuberosum Rottler ex Sprengel plants, remove the top green leaves, wash in half, longitudinally cut in half, and leave the young leaves (white or light yellow) in the center of about 1.5 cm above the bulbs , Cut into small pieces of about 2 mm long and put it into a glass dish and add a mixture of concentrated hydrochloric acid and 95% alcohol (1: 1 or