The results showed that bulblet formation by organogenesis which originated from the parenchyma cells on scale base.Bulblet formation belongs to external origination.

• 结果表明：小鳞茎的形态发生起源于鳞片近轴面基部的几层薄壁细胞，细胞脱分化后形成分生组织，再经过器官发生途径形成小鳞茎，属于外起源。