ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Changes in sugar, protein, respiration, and ethylene in developing and harvested Geraldton waxflower (Chamelaucium uncinatum) flowers.

Olley, C. M.; Joyce, D. C.; Irving, D. E.;

New Zealand Journal of Crop and Horticultural Science Year: 1996 Vol: 24 Issue: 2 Pages: 143-150 Ref: 19 ref.

1996

บทคัดย่อ

C. uncinatum cv. Light pink flowers were harvested at 10 sequential stages of floral development. Flower sugar concentrations increased during bud development, the highest (approx equal to 130 mg sucrose equivalents/g DW) being measured during the nectiferous stages of flower opening. There was little variation in either soluble or insoluble protein concentrations during flower development, which averaged around 19 and 25 mg bovine serum albumin equivalents/g DW, respectively. In single flowers cut and maintained individually in Eppendorf tubes, sugar and protein concentrations decreased rapidly after harvest, suggesting their use as respiratory substrates. Sprig senescence was characterized by FW loss and decreasing water use. In flowers taken from sprigs in vases, sugar and protein concentrations increased slightly (day 4) before decreasing with senescence (day 8). Flowers on sprigs appeared to deteriorate at approx equal to 8 days after harvest, in concert with the decreasing sugar and protei

n concentrations. Respiration rates were initially high (1432 ml kg-1 h-1) for flowers from harvested sprigs, but declined during vase life. Ethylene production also decreased during vase life, from an initial level of 1.32 micro l kg-1h-1. The absence of respiratory and ethylene production peaks indicates that Geraldton wax flowers are non-climacteric.