Figure 1.

The plant, tillers, and young spikes of Guomai 301. (A) An individual plant of Guomai 301 in the field condition; (B,C) tiller primordia at three-leaf stage and four-leaf stage, arrow heads indicated the small tillers; (D–M), spikes at various developmental stages; (D) single ridge stage; (E) double ridge stage; (F) glume primordia visible; (G) lemma primordia visible; (H) floret primordia visible; (I) late terminal spikelet; (J) terminal spikelet stage; (K) two awns/spikelet reaching apical meristem of the spikelet; (L) two awns/spikelet twice as long as spikelet; (M) elongation of third awn/spikelet, basal floret fully covered by lemma. Stem tip, the stem part connected to the young spikes.