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The Seed Setting in Wild-Type and Mutant Plants.
(A) Wild-type siliques show full seed set.
(B) In mutant siliques (ccg/CCG), only approximately half of the ovules developed into seed; the others were shrunken and dried.
(C) A micrograph showing a wild-type octant embryo in ccg/CCG pistils at 60 h after pollination.
(D) A mutant ovule in the same pistil as in (C), showing no embryo structure.
