Abstract
Peach flowers are often killed during bloom by spring frosts. LAB 173711, a compound with abscisic (ABA)-like activity, and ethephon delayed flowering in peach trees. In greenhouse experiments, LAB 173711, at concentrations of 10−3–10−2 M, was most effective in delaying bloom when applied after a 5°C cold storage period, rather than before the dormancy breaking treatment. In contrast, ethephon delayed bloom most effectively when applied before 5°C cold storage; ethephon caused flower bud abscission when treatments were made after the chilling requirement had been satisfied. In field experiments, ethephon delayed flowering by 6–7 days, which reduced bud injury after a spring frost during bloom. No flower bud injury was found on ethephon-treated trees after temperatures of −4.3°C; whereas without ethephon 25% of the flower buds were frost damaged. LAB 173711 delayed the time to 50% bloom by 2–3 days. However, this was not long enough to avoid low-temperature injury to the flower buds.
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Claims 8
Claim · model-written summary
In field experiments ethephon delayed flowering of peach by 6-7 days.
- Taxon
- peach
Prunus persicat0 - Treatment
- ethephone0
- Outcome
- floweringe0
- Direction
- delayede0
- Value
- 6–7 dayse0
- Setting
- field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field experiments, ethephon delayed flowering by 6–7 days”
t0“peach flower buds”
Claim · model-written summary
The ethephon-induced delay in flowering reduced flower bud injury after a spring frost during bloom in the field.
- Taxon
- peachPrunus persicat0
- Treatment
- ethephone0
- Outcome
- bud injurye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon delayed flowering by 6–7 days, which reduced bud injury after a spring frost during bloom”
t0“peach flower buds”
Claim · model-written summary
No flower bud injury occurred on ethephon-treated peach trees after temperatures of -4.3 C, whereas without ethephon 25% of flower buds were frost damaged.
- Taxon
- peachPrunus persicat0
- Treatment
- ethephone0
- Outcome
- flower bud injurye0
- Direction
- decreaseinferrede0
- Qualifier
- 25% of the flower buds were frost damagede0
- Comparator
- without ethephone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No flower bud injury was found on ethephon-treated trees after temperatures of −4.3°C; whereas without ethephon 25% of the flower buds were frost damaged”
t0“peach flower buds”
Claim · model-written summary
LAB 173711 delayed the time to 50% bloom of peach by 2-3 days.
- Taxon
- peachPrunus persicat0
- Treatment
- LAB 173711e0
- Outcome
- time to 50% bloome0
- Direction
- delayede0
- Value
- 2–3 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LAB 173711 delayed the time to 50% bloom by 2–3 days”
t0“peach flower buds”
Claim · model-written summary
The 2-3 day delay in bloom from LAB 173711 was not long enough to avoid low-temperature injury to peach flower buds.
- Taxon
- peachPrunus persicat0
- Treatment
- LAB 173711e0
- Outcome
- low-temperature injury to the flower budse0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LAB 173711 delayed the time to 50% bloom by 2–3 days. However, this was not long enough to avoid low-temperature injury to the flower buds”
t0“peach flower buds”
Claim · model-written summary
In greenhouse experiments LAB 173711 at 10-3 to 10-2 M was most effective in delaying bloom of peach when applied after a 5 C cold storage period rather than before the dormancy breaking treatment.
- Taxon
- peachPrunus persicat0
- Treatment
- LAB 173711e0
- Outcome
- delaying bloome0
- Direction
- most effectivee0
- Comparator
- before the dormancy breaking treatmente0
- Setting
- greenhouse experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In greenhouse experiments, LAB 173711, at concentrations of 10−3–10−2 M, was most effective in delaying bloom when applied after a 5°C cold storage period, rather than before the dormancy breaking treatment”
t0“peach flower buds”
Claim · model-written summary
Ethephon delayed bloom of peach most effectively when applied before 5 C cold storage.
- Taxon
- peachPrunus persicat0
- Treatment
- ethephone0
- Outcome
- delayed bloome0
- Direction
- most effectivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon delayed bloom most effectively when applied before 5°C cold storage”
t0“peach flower buds”
Claim · model-written summary
Ethephon caused flower bud abscission in peach when applied after the chilling requirement had been satisfied.
- Taxon
- peachPrunus persicat0
- Treatment
- ethephone0
- Outcome
- flower bud abscissione0
- Direction
- increaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon caused flower bud abscission when treatments were made after the chilling requirement had been satisfied”
t0“peach flower buds”
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See all 7 papers →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.