Fig. 3

Comparison of the pollination, fertilization and early seed development between the WT and ws1-1. A–D Pollen germination and pollen tube elongation in the WT (A, B) and ws1-1 (C, D). E, F Mature embryo sac of the WT (E) and ws1-1 (F). G, H WT endosperms at 2 DAP (G) and 3–5 DAP (H). I, J ws1-1 endosperms at 2 DAP (I) and 3–5 DAP (J). K–P The early-stage embryo in WT (K–M) and ws1-1 (N–P). White arrows in G–J and arrowheads in K–P indicate endosperms and embryos, respectively. The number of florets that were observed is over 10 for each figure. Scale bar = 100 µm in A–D or 50 µm in E–P