Fig. 7

In situ hybridization expression of AfimHEC3. A Longitudinal section of the flowering shoot apex. B Flower bud at S2, longitudinal section. C Floral bud at S3 during stamen initiation, longitudinal section. D–F Flower at S4 with details of the expression in stamens and stigmas (D, E) in longitudinal section, and ovary in transverse section (F). G–I Longitudinal section of a S5 floral bud with detailed gynostemium (H) and ovary (I). J–L Longitudinal sections of a S7 floral bud with detailed gynostemium (K) and ovary during ovule initiation (L). ab, accessory bud; l, leaf; mv, midvein of median carpel; o, ovule; ov, ovary; p, perianth. Arrow points to the shoot apical meristem; arrowheads point to stamens or stamen primordia; asterisks (*) point to stigmatic lobes. Floral stages S1–S9 as in Figs. 2 and 3. Scale bars: 100 μm in A, C–F, J; 50 μm in B; 250 μm in G; 150 μm in H, I; 200 μm in K, L. White arrowheads (K) indicate expression in the putative style