Figure 3.

Altered seed set in smo2-1/+ smo2-2 and smo2-1 smo2-2/+ mutants. A, Siliques 9 to 10 d after pollination from wild-type Columbia-0 (Col), smo2-1, smo2-2, smo2-1/+ smo2-2, and smo2-1 smo2-2/+ plants. White arrowheads indicate aborted seeds, and orange arrowheads indicate undeveloped ovules. Bar = 500 μm. B to D, Quantification of unpollinated ovules and total and aborted seeds in siliques from the wild type and smo2 single and double mutants. The data were derived from five experiments and are presented as means ± sd. For each experiment, six to 10 siliques (289–617 seeds plus unpollinated ovules) from five plants were examined. Significant differences were analyzed using Student’s t test (*, P < 0.05; **, P < 0.01; and ***, P < 0.001).