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Fig. 3. SEM analysis of fzp-2 and fzp-3 ectopic branches. (A,C)
fzp-2. (B,D,E) fzp-3. (A) Tertiary branch of fzp-2.
Note that the direction of outgrowth of bract-like structures is at 90° to
the previous branch. (B) Tertiary branches on a secondary branch of
fzp-3. (C) The apex of a fzp-2 tertiary branch terminates
with the formation of quaternary branches. (D,E) The majority of
fzp-3 tertiary branches form defective spikelets at their tips.
2°, bract-like structure of secondary order branches; 3°, tertiary
order; 4°, quaternary order. Scale bars: 100 µm.
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