Fig. 8. Interactions between duet and dyad during male meiosis and pollen development. Optical sections of cleared anthers viewed under DIC optics. (A-D) duet dyad double mutant; (E-L) duet/+ dyad/dyad. (A,E) Normal-looking meiocytes (arrowheads). (B) Defective microspores lacking exine (arrowhead). (C) Binucleate spores. (D) Late stage defective binucleate and multinucleate spores (arrow and arrowhead, respectively) surrounded by an uneven wall resembling the exine; not observed in the duet single mutant. (F) Dyad (arrowhead). (G) Undivided triads (arrowhead). (H) Round spores containing 1-3 nuclei. (I) Normal-looking tetrads (arrowhead). (J) Normal-looking developing pollen. (K) Abnormal multinucleate structures undergoing shrinkage (arrowhead). (L) Shrunken pollen. Scale bar: 12.5 µm.

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