The NRE cells degenerated earlier than the RE cells and resulted in different function of the two parts, and finally the NRE cells lost the ability of dedifferentiation.

• 非胚根端胚乳衰退早于胚根端胚乳，最终导致两区段胚乳细胞在执行功能上存在差异，非胚根端胚乳细胞失去脱分化能力，胚根端胚乳细胞仍具有脱分化能力。