Figure 2.

The Fusion Defects in the Development of baf1 Mutant Ears.

(A) Toluidine Blue staining of sections of young axillary meristems during vegetative development in wild-type (wt) and baf1-ref plants. Arrowheads point to the groove between the axillary meristem and the upper leaves. Bar = 50 μm.

(B) In baf1-ref internodes, axillary meristems fused to the culm cause the formation of a notch.

(C) Series of cross sections of developing ears, stained with Safranin O-Alcian Blue, reveal the lack of a separation layer in baf1-ref mutants between the stem and the developing axillary inflorescence. Arrowheads demarcate the separation zone normally observed in wild-type plants. The star marks the prophyll.

Bars = 500 μm.