Figure 5.

In situ hybridization of CsESR2 mRNA during different developmental stages of cucumber flower buds. A, Newly initiated floral buds (early stage 1) are indicated by arrowheads. B–H, Expression patterns of CsESR2 from stage 1 to stage 7 of flower bud differentiation. I–J, Expression patterns of CsESR2 at stages 8-1 and 8-2. K, Expression pattern of CsESR2 at stage 9. L, Negative control with no expression signal. Fm, floral meristem; Se, sepal; Pe, petal; St, stamen or stamen primordium; Ca, Carpel; Ov, ovary. Bar = 100 μm.