Abstract
A laboratory experiment was conducted to determine the effects of ethylene and anti-ethylene treatments on the postharvest life of cut rose cv. First Red flowers. The treatments comprised: exogenous ethylene applied at 1, 10 and 100 micro l/litre for 48 h at 22 degrees C. Ethylene at different concentrations reduced postharvest life, with 100 micro l/litre having the greatest effect. Ethylene production measurements suggested that First Red is climacteric during senescence. Pre-treatment of First Red flowers with 0.5 mM silver thiosulfate (STS) for 2 h at 22 degrees C increased vase life, but pre-treatment with 1 micro l/litre 1-methylcyclopropene (1-MCP) did not. Pre-treatment of First Red with 0.5 mM STS and, to a lesser extent, 1 micro l/litre 1-MCP for 2 h at 22 degrees C, protected flowers from subsequent exposure to 10 micro l/litre ethylene. Maximum vase life in both ethylene-treated and non-ethylene-treated First Red flowers was obtained with 0.5 mM STS.
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Claims 7
Claim · model-written summary
Exogenous ethylene reduced cut rose postharvest life, with the greatest effect at 100 micro l/litre.
- Taxon
- roset0
- Material
- First Redt0
- Treatment
- Ethylene at different concentrationse0
- Outcome
- postharvest lifee0
- Direction
- reducede0
- Qualifier
- 100 micro l/litree0
Not reportedComparator
Verbatim
e0“Ethylene at different concentrations reduced postharvest life, with 100 micro l/litre having the greatest effect.”
t0“cut 'First Red' rose”
Claim · model-written summary
Ethylene production suggested that First Red is climacteric during senescence.
Verbatim
e0“Ethylene production measurements suggested that First Red is climacteric during senescence.”
t0“cut 'First Red' rose”
Claim · model-written summary
Silver thiosulfate pretreatment increased First Red vase life.
- Taxon
- roset0
- Material
- First Rede0
- Treatment
- 0.5 mM silver thiosulfate (STS) for 2 h at 22 degrees Ce0
- Outcome
- vase lifee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Pre-treatment of First Red flowers with 0.5 mM silver thiosulfate (STS) for 2 h at 22 degrees C increased vase life”
t0“cut 'First Red' rose”
Claim · model-written summary
1-methylcyclopropene pretreatment did not increase First Red vase life.
- Taxon
- roset0
- Material
- First Redt0
- Treatment
- 1 micro l/litre 1-methylcyclopropene (1-MCP)e0
- Outcome
- vase lifee0
- Direction
- did note0
Not reportedComparator
Verbatim
e0“increased vase life, but pre-treatment with 1 micro l/litre 1-methylcyclopropene (1-MCP) did not.”
t0“cut 'First Red' rose”
Claim · model-written summary
Silver thiosulfate pretreatment protected First Red flowers against later ethylene exposure.
- Taxon
- roset0
- Material
- First Rede0
- Treatment
- 0.5 mM STSe0
- Outcome
- protected flowers from subsequent exposure to 10 micro l/litre ethylenee0
Not reportedComparatorDirection
Verbatim
e0“Pre-treatment of First Red with 0.5 mM STS and, to a lesser extent, 1 micro l/litre 1-MCP for 2 h at 22 degrees C, protected flowers from subsequent exposure to 10 micro l/litre ethylene.”
t0“cut 'First Red' rose”
Claim · model-written summary
1-methylcyclopropene pretreatment also protected First Red flowers against later ethylene exposure, less than STS.
- Taxon
- roset0
- Material
- First Rede0
- Treatment
- 1 micro l/litre 1-MCP for 2 h at 22 degrees Ce0
- Outcome
- protected flowers from subsequent exposure to 10 micro l/litre ethylenee0
- Comparator
- 0.5 mM STSe0
Not reportedDirection
Verbatim
e0“Pre-treatment of First Red with 0.5 mM STS and, to a lesser extent, 1 micro l/litre 1-MCP for 2 h at 22 degrees C, protected flowers from subsequent exposure to 10 micro l/litre ethylene.”
t0“cut 'First Red' rose”
Claim · model-written summary
STS gave maximum vase life in ethylene-treated and untreated First Red flowers.
Not reportedComparator
Verbatim
e0“Maximum vase life in both ethylene-treated and non-ethylene-treated First Red flowers was obtained with 0.5 mM STS.”
t0“cut 'First Red' rose”
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