英语语法分析

Proembryo development is of the Capsella-variation of Onagrad type.

原胚发育属柳叶菜型荠菜变型。

The degeneration of proembryo in crossing appeared in most cases 8 days after pollination.

授粉后8天，多数杂交原胚的细胞开始解体。

There ware two cell proembryo and some endosperm free nucleuses in the embryo sac 7-8 days after pollination;

授粉后7-8天，在胚囊中见到二细胞原胚及数个胚乳游离核。