上胚轴

The development of xylem is of mesarch.Stomata are monocyclic type.

叶脉、叶柄、上胚的维管束均为外韧型。

The regeneration systems of “kuai shi” plum were established, using epicotyl and hypotyl as exophyte.

以快食的上、下胚为外植，建立了胚再，获得了再植株。