Figure 6.

Light micrographs of longitudinal sections of the mid-region of pea pericarps at 4 DAA: intact (A), SP (B), and deseeded pericarp (SPNS, C); and 7 DAA (5 d after initial treatment) pericarps: intact (D), SP (E), and SPNS treated with GA₃ (F), 4-Cl-IAA (G), and GA₃ plus 4-Cl-IAA (H). Pericarps were treated as described in Figure 1. Sections were 2 μm thick and stained with toluidine blue. The scale bar in Figure 6A (for A–C) and Figure 6D (for D–H) represents 100 μm. I, The increase in cell number in the longitudinal plane of the exocarp, mesocarp, transitional layer, and inner epidermis of intact pericarps as estimated by measuring the number of cells per unit length of fruit. The data are means ± se (n = 8).