Figure 1.

The Phenotype of the baf1 Mutant.

(A) Wild-type (wt) tassel.

(B) baf1-ref mutant tassel.

(C) Primary branches from wild-type and baf1-ref tassels. Arrowheads point to single spikelets in the baf1-ref mutant.

(D) Wild-type and baf1-ref mutant ears.

(E) and (F) Internodes subtending mature ears form an indentation in wild-type plants (E) that is absent in baf1-ref mutants (F) (ears have been removed).

(G) In baf1-ref mutants, the ear is borne on a slightly elongated internode (arrowhead). The star marks the prophyll.

(H) Longitudinal section stained with Toluidine Blue of a wild-type seedling, showing the shoot apical meristem (star) and axillary meristems forming at the axils of developing leaves in an alternate arrangement (arrowheads). Bar = 100 μm.

(I) Seedlings of both wild-type and baf1-ref mutant plants were stripped of most leaves, revealing axillary buds (arrowheads) in normal but not in baf1-IL mutant plants.