Figure 2.

Comparison of the Needle-Like Structure in the rol Mutant and the Awn in Kasalath (indica).

(A) A spikelet with a needle-like structure in the rol mutant. The red bracket indicates the distal part, which has an awn identity. The blue bracket indicates the proximal part, which has lemma identity.

(B) and (C) Scanning electron microscopy images of the distal (B) and proximal (C) part of the needle-like structure in the rol mutant.

(D) to (F) A spikelet with a long awn in Kasalath.

(E) and (F) Scanning electron microscopy images of the awn (E) and the lemma (F) of Kasalath.

Bars = 2 mm (A) and (D) and 100 μm (B), (C), (E), and (F).