The results show that, most of varieties of the zizyphus jujuba embryo began aborting from globular or heart-shaped embryo period, and few of them could keep developing to cotyledon stage embryo.

• 实验结果表明，大多数品种的枣胚从球形期或心形期即开始败育，只有极少数品种可发育到成熟胚。