ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Effect of pre- and postharvest treatments on flower longevity of 'Ariana' cut roses.

Bolivar, P.; Fischer, G.; Florez, V. J.; Mora, A.;

Acta Horticulturae Year: 1999 Issue: No. 482 Pages: 83-87 Ref: 11 ref.

1999

บทคัดย่อ

In order to improve vase life and to reduce the abscission of vigorous flower buds and bent neck of cut roses cv. Ariana grown in plastic houses, different pre- and postharvest treatments were combined. Preharvest treatments were: (1) 0.017% CaO as calcium chelate, applied 3, 2 or 1 week before harvest; (2) 8.6 ppm NAA, applied one week before harvest to the upper third of plants; (3) Ca + NAA; and (4) control. After harvest, flowers were pulsed with the commercial cut flower preservatives Chrysal Professional (0.2%) or Florissima (1%) after hydration at 4 deg C in Ca(ClO)2. Cut flowers were then stored for 17 or 24 h at 2 deg C or underwent transport simulation for 24 h at 18 deg C. The longest vase life was obtained with the treatments Ca + NAA + Chrysal and Ca + NAA + Florissima (11.4 and 9.6 days, respectively, compared to 7.3 days with the control). The individual treatments with Ca or NAA at preharvest (and postharvest treatment with Chrysal or Florissima) had the highest bent neck percent

ages (>63%) after 7 days. Dry weight loss of all organs was slowest in the combined treatments (Ca + NAA + Chrysal or Florissima), and was significantly lower than in the control treatment. It is suggested that there might be a synergistic effect between NAA and CaO which decreases some parameters associated with senescence in Ariana cut roses.