RELATIONSHIP OF FLORAL PRESERVATIVES TO WATER MOVEMENT, FLUORIDE DISTRIBUTION AND INJURY IN GLADIOLUS AND OTHER CUT FLOWERS
Initially, more dye was translocated to basal than upper florets but as spikes aged more was translocated to upper florets and less to basal florets. This suggests that fluoride content and injury in gladiolus depend on the water-distribution pattern.
Gerberas held for 3 days in 1 ppm F developed severe petal injury. As F in water increased, injury increased. Gerberas held in 8-HQC + S retained colour, turgidity and lasted longer than those held in water. However, gerberas held in 8-HQC + S + F had more F in petals and greater injury than those held in 8-HQC + S alone, F-free water, or in water with F.
Cut chrysanthemums and snapdragons were not injured by F at 5 ppm or less. However, leaf and florets were injured when F exceeded 5 ppm. F content in leaves increased proportionally to level of F in vase water but F in florets increased only slightly.