观察植物的胚胎发育,一般都采用石蜡切片方法,这对普通中学来说,目前尚难具备这个条件;本文介绍一种极简便的方法,也许可以满足一般中学,在教学上或课外生物兴趣小组对这方面的需要,现简述如下: 材料通常以十字花科植物为主,如油菜、白菜、甘蓝萝卜等;野生植物常采用荠菜。由于荠菜的胚珠较小,初学者最好选用油菜或白菜 Observing the embryonic development of plants generally adopts the paraffin section method. This is difficult for ordinary middle schools to meet this condition. This article describes a very simple method that may satisfy the general secondary school, teaching or extracurricular biological interest group. The needs of this area are briefly described as follows: Materials are usually cruciferous, such as rapeseed, cabbage, kale, etc. Wild plants often use leeks. As the ovules of leeks are small, it is better for beginners to choose rape or cabbage