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Spikelets at early developmental stages in the wild-type and the m34-z mutant. (A–E) wild-type spikelet. (A) Sp4, (B) Sp5-6, (C) Sp7, (D) Sp8, (E) After Sp8, (F–I) m34-z mutant spikelet, (F) Sp4, (G) Sp5-6, (H) Sp7, (I) Sp8, (J) After Sp8. fm, floral meristem; rg, rudimentary glume; sl, sterile lemma; le, lemma; pa, palea; st, stamen; pi, pistil. Bars = 100 μm.
