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Embryological study of the ovules after hand pollination (induced autogamy). (A) The zygote (z) on the 4th day. (B) Two-cell embryo on the 8th day; nuclei are indicated by arrowheads. (C) Four-cell embryo on the 12th day and (D) eight-cell embryo on the 16th day. Starch grains are clearly visible (C). Scale bar = 10 μm.
