Figure 7

Wild-type pollen can restore the shorter siliques of the AtrabD2b/2c mutant to normal length. Wild-type and AtrabD2b/2c double mutant plants were crossed and silique length measured after 10 days. A. Inflorescences from a cross between a wild-type plant and AtrabD2b/2c mutant. The blue arrow indicates a silique in which a wild-type pistil was fertilized with AtrabD2b;AtrabD2c pollen. The red arrow indicates a silique in which the AtrabD2b/2c mutant pistil was fertilized with wild-type pollen. B. Siliques from the crosses at 10 DAP (days after pollination) were dissected and examined under a stereo microscope. White arrowheads indicate unfertilized embryos found upon pollination of wild-type plants with AtrabD2b/2c pollen. C, More than 20 siliques were measured for each plant. Error bars indicate standard deviation. Scale bars= 850 μm (A); 500 μm (B).