Abstract
This study was undertaken to investigate the effect of Accel™, sucrose and silver thiosulphate (STS) on the dry weight, accumulation of sucrose and reducing sugars in cut tuberose (Polianthes tuberosa L) petals at various positions along the spike. Cut stems of tuberose were held in optimum treatments that prolonged their vase life (Hutchinson et al., 2003): continuous holding in 25 mg/L BA equivalent of Accel; pulsing in 20% sucrose for 24 hrs and subsequently holding in either deionised water (DIW) or in 25 mg/L BA; pulsing in 2 mM STS for 1 hr and subsequent holding in DIW. The middle and bottom florets of cut flowers held in DIW were heavier than the top florets. Pulsing tuberose cut flowers in sucrose or in STS improved the dry weights of the middle and bottom florets in the first 3 days, but up to 6 days of top florets. Florets of cut flowers pulsed in sucrose and subsequently held in Accel were heavier than those subsequently held in DIW or those held continuously in Accel. Sucrose, STS and Accel increased floret opening but had varied influence on the accumulation of sucrose and reducing sugars in petals of florets along the spike. Cut tuberose stems pulsed in sucrose and subsequently held in either DIW or 25 mg/L BA equivalent of Accel accumulated the largest amounts of sucrose and reducing sugars. Pulsing cut tuberose flowers in 10% sucrose and subsequently holding them in Accel or DIW or pulsing in STS, while having no influence on sucrose levels in bottom florets, significantly increased levels in top florets for the first 3 days before a sharp decline in petals pulsed in sucrose. The main difference was that while most of the sucrose accumulated in the middle florets, reducing sugars was concentrated on the bottom florets along the spike. Unexpectedly, pulsing stems in STS or holding them in Accel had no significant influence on levels of sucrose or reducing sugars within the 9 days of testing even though most florets had opened by this time. The results of the present study suggest that while sucrose had a direct influence on accumulating of sucrose and reducing sugars in florets, Accel and STS improved vase life and floret opening in cut tuberose stems either indirectly through substrate mobilisation and increased metabolism, or may have played another different role other than substrate mobilisation.
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Claims 20
Claim · model-written summary
Middle and bottom florets held in deionized water were heavier than top florets.
- Taxon
- TUBEROSE
Agave amicat0 - Organ / stage
- middle and bottom floretse0
- Treatment
- DIWe0
- Outcome
- heaviere0
- Direction
- heaviere0
- Comparator
- top floretse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The middle and bottom florets of cut flowers held in DIW were heavier than the top florets”
t0“TUBEROSE (POLIANTHES TUBEROSA L.)”
Claim · model-written summary
Sucrose pulsing improved dry weight of middle and bottom florets for the first three days.
- Taxon
- tuberoseAgave amicae0
- Organ / stage
- middle and bottom floretse0
- Treatment
- sucrosee0
- Outcome
- dry weightse0
- Direction
- improvede0
- Qualifier
- first 3 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pulsing tuberose cut flowers in sucrose or in STS improved the dry weights of the middle and bottom florets in the first 3 days”
Claim · model-written summary
STS pulsing improved dry weight of middle and bottom florets for the first three days.
- Taxon
- tuberoseAgave amicae0
- Organ / stage
- middle and bottom floretse0
- Treatment
- STSe0
- Outcome
- dry weightse0
- Direction
- improvede0
- Qualifier
- first 3 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pulsing tuberose cut flowers in sucrose or in STS improved the dry weights of the middle and bottom florets in the first 3 days”
Claim · model-written summary
Sucrose pulsing improved top-floret dry weight for up to six days.
- Taxon
- tuberoseAgave amicae0
- Organ / stage
- top floretse0
- Treatment
- sucrosee0
- Outcome
- dry weightse0
- Direction
- improvede0
- Qualifier
- up to 6 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pulsing tuberose cut flowers in sucrose or in STS improved the dry weights of the middle and bottom florets in the first 3 days, but up to 6 days of top florets”
Claim · model-written summary
STS pulsing improved top-floret dry weight for up to six days.
- Taxon
- tuberoseAgave amicae0
- Organ / stage
- top floretse0
- Treatment
- STSe0
- Outcome
- dry weightse0
- Direction
- improvede0
- Qualifier
- up to 6 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pulsing tuberose cut flowers in sucrose or in STS improved the dry weights of the middle and bottom florets in the first 3 days, but up to 6 days of top florets”
Claim · model-written summary
Sucrose pulsing followed by Accel yielded heavier florets than sucrose pulsing followed by DIW.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- pulsed in sucrose and subsequently held in Accele0
- Outcome
- heaviere0
- Direction
- heaviere0
- Comparator
- those subsequently held in DIWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Florets of cut flowers pulsed in sucrose and subsequently held in Accel were heavier than those subsequently held in DIW”
t0“TUBEROSE”
Claim · model-written summary
Sucrose pulsing followed by Accel yielded heavier florets than continuous Accel holding.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- pulsed in sucrose and subsequently held in Accele0
- Outcome
- heaviere0
- Direction
- heaviere0
- Comparator
- those held continuously in Accele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Florets of cut flowers pulsed in sucrose and subsequently held in Accel were heavier than those subsequently held in DIW or those held continuously in Accel”
t0“TUBEROSE”
Claim · model-written summary
Sucrose increased floret opening.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- Sucrosee0
- Outcome
- floret openinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose, STS and Accel increased floret opening”
t0“TUBEROSE”
Claim · model-written summary
STS increased floret opening.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- STSe0
- Outcome
- floret openinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose, STS and Accel increased floret opening”
t0“TUBEROSE”
Claim · model-written summary
Accel increased floret opening.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- Accele0
- Outcome
- floret openinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose, STS and Accel increased floret opening”
t0“TUBEROSE”
Claim · model-written summary
Sucrose pulsing followed by DIW yielded the largest sucrose and reducing sugar accumulation.
- Taxon
- tuberoseAgave amicae0
- Treatment
- pulsed in sucrose and subsequently held in either DIWe0
- Outcome
- sucrose and reducing sugarse0
- Direction
- largeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cut tuberose stems pulsed in sucrose and subsequently held in either DIW or 25 mg/L BA equivalent of Accel accumulated the largest amounts of sucrose and reducing sugars”
Claim · model-written summary
Sucrose pulsing followed by Accel yielded the largest sucrose and reducing sugar accumulation.
- Taxon
- tuberoseAgave amicae0
- Treatment
- pulsed in sucrose and subsequently held in either DIW or 25 mg/L BA equivalent of Accele0
- Outcome
- sucrose and reducing sugarse0
- Direction
- largeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cut tuberose stems pulsed in sucrose and subsequently held in either DIW or 25 mg/L BA equivalent of Accel accumulated the largest amounts of sucrose and reducing sugars”
Claim · model-written summary
Pulsing in 10% sucrose followed by Accel or DIW raised top-floret sucrose significantly for three days, then levels fell sharply.
- Taxon
- tuberoseAgave amicae0
- Organ / stage
- top floretse0
- Treatment
- 10% sucrose and subsequently holding them in Accel or DIWe0
- Outcome
- sucrose levelse0
- Direction
- increasede0
- Qualifier
- first 3 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pulsing cut tuberose flowers in 10% sucrose and subsequently holding them in Accel or DIW or pulsing in STS, while having no influence on sucrose levels in bottom florets, significantly increased levels in top florets for the first 3 days before a sharp decline in petals pulsed in sucrose”
Claim · model-written summary
STS pulsing significantly increased top-floret sucrose during the first three days.
- Taxon
- TUBEROSEAgave amicat0
- Organ / stage
- top floretse0
- Treatment
- STSe0
- Outcome
- sucrose levelse0
- Direction
- increasede0
- Qualifier
- first 3 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pulsing in STS, while having no influence on sucrose levels in bottom florets, significantly increased levels in top florets for the first 3 days”
t0“TUBEROSE”
Claim · model-written summary
Sucrose pulsing and STS pulsing did not influence bottom-floret sucrose levels.
- Taxon
- tuberoseAgave amicae0
- Organ / stage
- bottom floretse0
- Treatment
- 10% sucrose and subsequently holding them in Accel or DIW or pulsing in STSe0
- Outcome
- sucrose levelse0
- Direction
- no influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pulsing cut tuberose flowers in 10% sucrose and subsequently holding them in Accel or DIW or pulsing in STS, while having no influence on sucrose levels in bottom florets”
Claim · model-written summary
Sucrose accumulated mainly in middle florets, while reducing sugars were concentrated in bottom florets.
- Taxon
- TUBEROSEAgave amicat0
- Outcome
- sucrose accumulated in the middle florets, reducing sugars was concentrated on the bottom floretse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most of the sucrose accumulated in the middle florets, reducing sugars was concentrated on the bottom florets”
t0“TUBEROSE”
Claim · model-written summary
STS pulsing did not significantly affect sucrose or reducing sugar levels over nine days.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- STSe0
- Outcome
- levels of sucrose or reducing sugarse0
- Direction
- no significant influencee0
- Qualifier
- 9 days of testinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pulsing stems in STS or holding them in Accel had no significant influence on levels of sucrose or reducing sugars within the 9 days of testing”
t0“TUBEROSE”
Claim · model-written summary
Accel holding did not significantly affect sucrose or reducing sugar levels over nine days.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- Accele0
- Outcome
- levels of sucrose or reducing sugarse0
- Direction
- no significant influencee0
- Qualifier
- 9 days of testinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pulsing stems in STS or holding them in Accel had no significant influence on levels of sucrose or reducing sugars within the 9 days of testing”
t0“TUBEROSE”
Claim · model-written summary
The authors suggest sucrose directly influenced sugar accumulation in florets.
- Taxon
- TUBEROSEAgave amicat0
- Treatment
- sucrosee0
- Outcome
- accumulating of sucrose and reducing sugars in floretse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sucrose had a direct influence on accumulating of sucrose and reducing sugars in florets”
t0“TUBEROSE”
Claim · model-written summary
The authors suggest Accel and STS improved vase life and floret opening indirectly through substrate mobilization and metabolism, or by another role.
- Taxon
- tuberoseAgave amicae0
- Treatment
- Accel and STSe0
- Outcome
- vase life and floret openinge0
- Qualifier
- either indirectly through substrate mobilisation and increased metabolism, or may have played another different role other than substrate mobilisatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accel and STS improved vase life and floret opening in cut tuberose stems either indirectly through substrate mobilisation and increased metabolism, or may have played another different role other than substrate mobilisation”
The same questions in other papers
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1 paper in the same direction as this paper
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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.