Fig. 5

The female gametophyte development of Suaeda salsa. a Embryo sac with megaspore mother cell, the arrowhead denotes the megaspore mother cell nucleus. b Putative meiosis stage. c Mono-nuclear embryo sac, FG1 embryo sac, the arrowhead denotes the functional megaspore. d Early bi-nuclear embryo sac, the arrowhead denotes the nucleus after division, FG2. e Later bi-nuclear embryo sac, the arrowhead denotes the nucleus after division, FG3. f Tetra-nuclear embryo sac, FG4. g Medium eight-nuclear embryo sac. FG5 ~ FG6, the rectangular part in the right corner is an enlarged view of the ellipse part. h Later eight-nuclear embryo sac, three antipodal cells have degenerated, FG7, rectangular part in the right corner is an enlarged view of the ellipse part. A-E: Bars = 20 μm. F-G: Bars = 50 μm. AN, Antipodal cell nucleus. PN, Polar nucleus. CN, Central cell nucleus, EN, Egg cell nucleus. SN, Synergid cell nucleus