ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Physiology and biochemistry of sucrose-fed Sandersonia aurantiaca flowers.

Eason, J. R.; Sinclair, B. K.; Vre, L. A. de; Somerfield, S. D.; King, G. A.;

Acta Horticulturae Year: 1998 Issue: No. 464 Pages: 141-145 Ref: 8 ref.

1998

บทคัดย่อ

Initial experiments indicated that holding Sandersonia aurantiaca flower stems in 0.06 M solutions of sucrose or glucose increased vase life from 11 days (control stems held in water) to 15 and 14 days, respectively. The vase life of stems held in a 0.06 M mannitol solution was similar to that of control stems. Leaf removal from flowering stems reduced vase life. In further experiments, flowers from stems held in 0.06 M sucrose remained larger, firmer and of a brighter orange colour than flowers from control stems held in water. Endogenous levels of carotenoids, soluble carbohydrates and soluble protein were greater in the sucrose-fed flowers than in control flowers. The levels of sugars and proteins declined after the first visible signs of floral senescence (fading and wilting) in both control and sucrose-fed flowers, indicating that although sucrose treatment delays the onset of senescence, neither the total level of endogenous soluble sugar or soluble protein is a limiting factor which trigg

ers flower senescence in this species.