Table 1. Characteristics used to define the developmental stages of cucumber male flowers.

Stage	Length of Floral Bud (mm)	Morphological Indications
1–7	<1	Anther expands
8	1–1.5	Locules differentiate morphologically
9	2–3	Microsporocytes initiate
10	3–4	Meiosis in anthers
11	5–10	Uninuclear pollen appears
12	>11	Mature pollen is formed
13	Open	Pollen release