Fig. 8

pH values of Excoecaria and Osmanthus leaves. (A) The pH values of the homogenate of Excoecaria and Osmanthus leaves in water. The details of the leaf developmental stages are as described in Fig. 1. B-C, J-K Neutral Red staining of the adaxial epidermal cells of Excoecaria leaves. The adaxial epidermal cells of Excoecaria leaves without Neutral Red (−NR) staining at stage 1 (B), stage 2 (J) and with NR (+NR) staining at stage 1 (C), stage 2 (K). F-G, N-O NR staining of the abaxial epidermal cells of Excoecaria leaves. The abaxial epidermal cells of Excoecaria leaves without NR staining at stage 1 (F), stage 2 (N) and with NR staining at stage 1 (G), stage 2 (O). D-E, L-M NR staining of the adaxial epidermal cells of Osmanthus leaves. The adaxial epidermal cells of Osmanthus leaves without NR staining at stage 1 (D), stage 2 (L) and with NR staining at stage 1 (E), stage 2 (M). H-I, P-Q NR staining of the abaxial epidermal cells of Osmanthus leaves. The abaxial epidermal cells of Osmanthus leaves without NR staining at stage 1 (H), stage 2 (P) and with NR staining at stage 1 (I), stage 2 (Q). Scale bars indicate 30 μm