Figure 5
Flow cytometry histograms from cell nuclei of bulked and single seeds. Facultative apomictic ecotypes (no. 7 and no. 1) composed of tetraploids which set seeds by (a) amphimixis (4C:6C) and pseudogamous apomixis (4C:10C) or by (b) haploid parthenogenesis (2C:6C), amphimixis (4C:6C) and pseudogamous apomixis (4C:10C). (c) Apomictically derived seed (4C embryo plus 10C endosperm) belonging to ecotype 1; (d) Sexually-derived seed (4C embryo plus 6C endosperm), likely a BII-type hybrid seed belonging to ecotype 1; (e) Hexaploid BIII-type hybrid seed belonging to ecotype 13 derived from the double fertilization of an unreduced egg cell (6C embryo plus 10C endosperm).
