Fig. 1. Opening of floral buds (A), abscission of flower buds (B), tepal senescence (C), and abscission of open flowers (D) in cut Dendrobium cv. Khao Sanan inflorescences held in distilled water (), in an aqueous solution of HQS + AgNO3 () or in a solution of HQS + AgNO3 + 4 g L−1 sucrose (). Data are means of 30 replicate inflorescences.