Fig. 10.

Embryological study of ovules from flower buds that were emasculated and isolated from pollination. (A) A few-nucleate female gametophyte (FG) on the 4th day; nuclei are indicated by arrowheads. (B) The mature FG with the egg cell (ec) and polar nucleus on the 4th day. (C–F) A structure of ovary tissue on 12th day that contained equal numbers of unfertilized but enlarged egg cells (ec) (E) and of zygote-like structures (zls) (F). (G) Enlarged egg cell (ec) on the 12th day. (H) Zygote-like structure (zls) on the 16th day. Scale bar = 10 μm.