Fig. 1. The effects of a pulse treatment on the vase life of cut tulips. (A–E) The flowers in the vase on the left side are the controls, and on the right side the flowers had been
pulse-treated, for 6 h, with a mixture of ethephon, GA3, BA, and calcium ions. Five stems per vase, only one representative replication out of 5 shown. Cultivars were Yellow
Apeldoorn (A), Rosario (B), Frappant (C) and White Dream (D, E). Pictures A–D were taken at day 5 of vase life, picture E at day 8. (F) Left vase: control; middle vase: flowers
treated continuously with amixture of ethephon, GA3, BA, and calcium ions; right vase: flowers treated continuously with 200mgL−1 HQC and 2 g L−1 sucrose. One stem per
replication, only one of ten replications shown. The cultivar is Monte Carlo. The picture was taken on day 5 of vase life. (For interpretation of color in this figure the reader is
referred to the web version of the article.)