Document Type: Research paper


Dep. of Horticulture Sciences, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran



Enrichment of zeolite and sponge as ethylene absorbent with potassium permanganate was the
idea of this study to provide an efficient way to scavenge ethylene during storage period of
three Rosa hybrida cv. ‘Shiraz’, ‘Avalanche’, and ‘After-party’ cut flowers. A preliminary
experiment revealed that two mL of potassium permanganate solution (1 mM) was enough to
enrich two grams of zeolite and two cm3 of sponge. Additionally, one μL L-1 of external
ethylene also found to be effective on induction of quality damage to certain cut flowers of
rose cultivars, which were selected for injection in each isolated container for further
evaluations. The treatments used in this study included control (without absorbent), enriched
zeolite or sponge, enriched zeolite or sponge + ethylene (one μL L-1). The quality of flowers,
weight, number of dropped petals, electrical conductivity of vase solution, ethylene
concentration in the container and petal anthocyanins evaluated through/the end of
experiment. Results revealed that change or reduction in the quality parameters were minor
(more maintenance or stability of quality was achieved) with enriched zeolite and then
enriched sponge compared to the control. Enriched zeolite could even maintain the quality of
cut flowers at the level of control under external ethylene injection superior to enriched
sponge treatment. ‘Avalanche’ and ‘Shiraz’ cultivars figured as the most sensitive and
resistant cultivars to the evaluated level of external ethylene concentration, respectively.


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