ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Post-harvest treatment of cut foliage.

Forrest, M.;

Acta Horticulturae Year: 1991 Issue: No. 298 Pages: 255-261 Ref: 10 ref.

1991

บทคัดย่อ

A series of experiments was carried out on the vase life of cut foliage of Eucalyptus gunnii. Cut stems were wet- or dry-stored for 2 or 4 weeks at 5 deg C and vase life was measured in an unheated greenhouse (3.4-6.2 deg ). The vase life of stems stored for 2 weeks at 5 deg was also compared with freshly harvested stems in a heated greenhouse (16-18 deg ). The effect of floral preservatives on vase life was assessed by pulsing stems in 2 mm silver thiosulphate (STS) or 8 mg 8-hydroxyquinoline citrate (HQC)/litre + 20 g sucrose/litre for 4 h, by placing stems in 200 mg 8-HQC/litre + 20 g sucrose/litre for the duration of the experiment and by placing stems in tap water or distilled water. In a further experiment the vase life of E. gunnii, E. delegetensis [E. delegatensis], E. rubida, E. sp. cv. Silver Drop, E. viminalis, E. globulus, Pittosporum tenuifolium and Acacia cultriformis cut foliage was assessed. E. gunnii cut foliage stored at 5 deg for 2 and 4 weeks had an average vase life of 31-59 d and 32-69 d, respectively, when held at 3-6 deg . Dry-stored stems had a longer vase life than wet-stored stems. The vase life of stems stored for 2 weeks at 5 deg was longer than that of freshly harvested stems at 16-18 deg . The chemical treatments did not increase the vase life of E. gunnii foliage. Of the various species examined, E. gunnii showed the most potential as cut foliage material, followed by E. delegetensis, E. rubida and E. globulus.