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A pre-storage sucrose pulse protects cut Leucadendron var. 'Silvan Red' during long term dry storage at 1 deg C.

Jones, R. B.;

Acta Horticulturae Year: 1991 Issue: No. 298 Pages: 247-253 Ref: 6 ref.

1991

บทคัดย่อ

A pre-storage sucrose pulse protects cut Leucadendron var. 'Silvan Red' during long term dry storage at 1 deg C.

Leucadendron (cv. Silvan Red) stems were treated with prestorage pulses of 100 p.p.m. Cl (as sodium dichloroisocyanurate), 100 p.p.m. Cl + 2% sucrose, 100 p.p.m. Cl + 2% sucrose + 250 p.p.m. citric acid, or 100 p.p.m. Cl + 20% sucrose, for 24 h at 1 deg or 20 deg C. Bunches of 10 stems were sprayed with iprodione, wrapped in newspaper and 35 micro m polyethylene film and stored at 1 deg , 95% RH for 42 d. After storage the stems were recut and then placed in distilled water at 1 deg for 24 h. The end of vase life was taken at the first sign of leaf desiccation. Vase life was increased by over 45% with the 100 p.p.m. Cl + 2% sucrose treatment and by over 300% with the 100 p.p.m. Cl + 20% sucrose treatment, compared with 100 p.p.m. Cl alone. Pulse temperature and citric acid had no effect on vase life when sucrose was present in the pulse solution. The increase in vase life due to sucrose pulsing was the result of inhibition of desiccation during, and immediately after, storage.