Abstract
Abstract The presence of very low concentrations of ethylene had dramatic effects on the opening of cut flowers of rose ( Rosa hybrida L.). Depending on cultivar, the rate of opening was unaffected (e.g., ‘Gold Rush’), accelerated (e.g., ‘Sterling Silver’), or inhibited (e.g., ‘Lovely Girl’). The K m for the inhibition of opening of ‘Lovely Girl’ by ethylene was 4 ppb. Flowers of some cultivars (e.g., ‘Royalty’) had an abnormal shape when opened in the presence of ethylene. The effects of exogenous ethylene could be overcome by pretreatment of the flowers with 0.5 μmol silver thiosulfate per stem. No phytotoxicity was observed in flowers treated with 2 μmol per stem. Examination of the kinetics of the ethylene/Ag + interaction in inhibition of opening of ‘Lovely Girl’ flowers indicated that the Ag + /ethylene interaction was competitive.
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Claims 8
Claim · model-written summary
Ethylene did not change flower opening rate in the rose cultivar Gold Rush.
Not reportedComparator
Verbatim
e0“Depending on cultivar, the rate of opening was unaffected (e.g., ‘Gold Rush’), accelerated (e.g., ‘Sterling Silver’), or inhibited (e.g., ‘Lovely Girl’).”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
Ethylene accelerated flower opening in Sterling Silver roses.
- Taxon
- Roset0
- Material
- Sterling Silvere0
- Treatment
- Ethylenet0
- Outcome
- rate of openinge0
- Direction
- acceleratede0
Not reportedComparator
Verbatim
e0“Depending on cultivar, the rate of opening was unaffected (e.g., ‘Gold Rush’), accelerated (e.g., ‘Sterling Silver’), or inhibited (e.g., ‘Lovely Girl’).”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
Ethylene inhibited flower opening in Lovely Girl roses.
Not reportedComparator
Verbatim
e0“Depending on cultivar, the rate of opening was unaffected (e.g., ‘Gold Rush’), accelerated (e.g., ‘Sterling Silver’), or inhibited (e.g., ‘Lovely Girl’).”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
The reported K m for ethylene inhibition of Lovely Girl rose opening was 4 ppb.
Verbatim
e0“The K m for the inhibition of opening of ‘Lovely Girl’ by ethylene was 4 ppb.”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
Royalty rose flowers opened with abnormal shape in the presence of ethylene.
Not reportedComparator
Verbatim
e0“Flowers of some cultivars (e.g., ‘Royalty’) had an abnormal shape when opened in the presence of ethylene.”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
Pretreatment with 0.5 μmol silver thiosulfate per stem overcame effects of exogenous ethylene on rose opening.
Verbatim
e0“The effects of exogenous ethylene could be overcome by pretreatment of the flowers with 0.5 μmol silver thiosulfate per stem.”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
Silver thiosulfate at 2 μmol per stem caused no observed phytotoxicity in rose flowers.
Not reportedComparator
Verbatim
e0“No phytotoxicity was observed in flowers treated with 2 μmol per stem.”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
Claim · model-written summary
The Ag + and ethylene interaction in inhibiting Lovely Girl rose opening was competitive.
Verbatim
e0“Examination of the kinetics of the ethylene/Ag + interaction in inhibition of opening of ‘Lovely Girl’ flowers indicated that the Ag + /ethylene interaction was competitive.”
t0“Ethylene and Silver Thiosulfate Influence Opening of Cut Rose Flowers”
The same questions in other papers
silver atom · physiology: hormones · RosaResults agree
2 papers in the same direction as this paper
- positive
- positive
thiosulfate · physiology: hormones · RosaResults agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.