Abstract
SummaryThe effect of ethanol and sucrose on the vase-life of cut rose (Rosa hybrida L.) flowers was studied. Experiments were conducted between 2004 – 2007 on two popular cultivars, 'Grand Gala' and 'First Red'. The combined application of 3% (v/v) ethanol and 3% (w/v) sucrose gave the longest vase-life in both cultivars. However, sucrose alone did not increase the vase-life of 'Grand Gala'. The rate of water uptake was higher in treated flowers, and lasted longer compared to controls. A negative relationship was observed between abscisic acid (ABA) concentrations in petals and flower stem water potential. The concentration of ABA in the petals of ethanol-treated flowers was low. ABA concentrations increased with flower age, while the combined treatment of ethanol plus sucrose inhibited this increase by ameliorating water stress by a prolonged water uptake and by maintaining a higher flower stem water potential. Ethanol plus sucrose treatment also suppressed ethylene production, suggesting a role in delaying ageing.
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Claims 10
Claim · model-written summary
Combined 3% ethanol and 3% sucrose gave the longest vase life in both rose cultivars.
Not reportedComparator
Verbatim
e0“The combined application of 3% (v/v) ethanol and 3% (w/v) sucrose gave the longest vase-life in both cultivars”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Sucrose alone did not increase Grand Gala rose vase life.
- Taxon
- roset0
- Material
- 'Grand Gala'e0
- Treatment
- sucrose alonee0
- Outcome
- vase-lifee0
- Direction
- did not increasee0
Not reportedComparator
Verbatim
e0“sucrose alone did not increase the vase-life of 'Grand Gala'”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Treated rose flowers had higher and longer lasting water uptake than controls.
Verbatim
e0“The rate of water uptake was higher in treated flowers, and lasted longer compared to controls”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Petal ABA concentration was negatively related to flower stem water potential.
Verbatim
e0“A negative relationship was observed between abscisic acid (ABA) concentrations in petals and flower stem water potential”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Ethanol-treated rose flowers had low petal ABA concentration.
Not reportedComparator
Verbatim
e0“The concentration of ABA in the petals of ethanol-treated flowers was low”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Petal ABA concentrations increased with rose flower age.
Verbatim
e0“ABA concentrations increased with flower age”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Combined ethanol and sucrose inhibited the age-associated rise in rose ABA.
Not reportedComparator
Verbatim
e0“the combined treatment of ethanol plus sucrose inhibited this increase by ameliorating water stress by a prolonged water uptake and by maintaining a higher flower stem water potential”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Combined ethanol and sucrose prolonged water uptake in rose flowers.
Not reportedComparator
Verbatim
e0“the combined treatment of ethanol plus sucrose inhibited this increase by ameliorating water stress by a prolonged water uptake and by maintaining a higher flower stem water potential”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Combined ethanol and sucrose maintained higher rose flower stem water potential.
Not reportedComparator
Verbatim
e0“the combined treatment of ethanol plus sucrose inhibited this increase by ameliorating water stress by a prolonged water uptake and by maintaining a higher flower stem water potential”
t0“cut rose (Rosa hybridaL.)”
Claim · model-written summary
Ethanol plus sucrose suppressed ethylene production in roses.
- Taxon
- roset0
- Treatment
- Ethanol plus sucrose treatmente0
- Outcome
- ethylene productione0
- Direction
- suppressede0
Not reportedComparator
Verbatim
e0“Ethanol plus sucrose treatment also suppressed ethylene production”
t0“cut rose (Rosa hybridaL.)”
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