本文报道了应用扫描电镜观察水稻花培愈伤组织及其器官发生过程中的结果表明水稻花培愈伤组织具高度异质性,并证明芽为外起源,根为内起源。 In this paper, the results of scanning electron microscopy (SEM) for the observation of the callus and its organs during the flower culture showed that the calli were highly heterogeneous in callus culture and proved that the bud was the external origin and the root was the internal origin.