A study of longevity of cut carnations (Dianthus caryophyllus L.) grown in Yalova (Istanbul).
Celikel, F. G.; Karacali, I.;
Acta Horticulturae Year: 1991 Issue: No. 298 Pages: 111-118 Ref: 7 ref.
1991
บทคัดย่อ
Carnation flowers (cultivars Astor and Salmon Sim) were harvested at maturity (fully open) in spring (11 Apr.) or summer (12 July) from the villages of Ciftlikkoy and Korukoy in Yalova. Flowers were kept at 20 deg C in deionized water containing 4 p.p.m. NaOCl under a 12 h day/12 h night light cycle. Senescent flowers were counted and discarded daily. In a further experiment, flowers were treated with silver thiosulphate, cooled rapidly and then either packed dry in a commercial container or immersed in deionized water and stored at 0-1 deg and 85-90% RH for one week. Flower head and stem diameter, stem length, fresh and dry weight and dry matter of the head and stem, chlorophyll intensities of leaf and calyx, anthocyanin intensity of petals, ethanol-soluble reducing sugars in petals and respiratory rates of flowers were measured. Stem and head diameters and their fresh weights were significantly higher in spring than in summer. Vase life, chlorophyll intensity, anthocyanin intensity and % reducing sugars were significantly higher in summer than in spring. Ciftlikkoy-grown flowers had a significantly higher % head dry matter and a longer vase life than flowers grown at Korukoy. Salmon Sim flowers had significantly higher head and stem dry matter contents and a loner vase life than Astor flowers. There were significant differences in vase life between the different storage treatments. The average vase life of silver thiosulphate-treated, dry-stored, wet-stored and control flowers was 18.08, 13.09, 12.06 and 9.30 days, respectively.