The results showed that the leaf primordium is unsymmetrical during its early development stage.And the leaf primordium differentiates into protodern,ground meristem and procambial bundles.

• 研究结果表明，叶原基在发育早期其形态是不对称的，内部为同形细胞组成，但很快分化成原表皮，原形成层束和基本分生组织。