The microscopic observations of the differentiation processes of axillary buds. ( ) Axillary buds during the bract differentiation stage. ( ) Bract differentiation stage (The prophyll is 6–10 mm long). ( ) Bract differentiation stage (The first leaf is 4–7 mm long). ( ) Bract differentiation stage (The second leaf is 1–2 mm long). ( ) Bract differentiation stage (the third leaf is 0.2–0.5 mm long). ( ) Bract differentiation stage (The first bract is 0.1–0.2 mm long). ( ) Primary branch differentiation (0.1–0.5 mm, the prophyll is 20–30 mm long). ( ) Secondary branch differentiation (0.5–1.2 mm, the prophyll is 40–60 mm long). ( ) Spikelet differentiation (1.0–2.5 mm). ( ) Closeup of spikelet differentiation. ( ) The initial stage of pistil and stamen differentiation (3–5 mm). ( ) The late stage of pistil and stamen differentiation (10 mm)
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