Abstract
SummaryApplications of GA3, 2-NOA or CEPA, made at different times during a six-week period of natural short days in autumn, decreased the numbers of flowers produced in the following spring; where flowers developed, the number of achenes on the primary fruits was always reduced. Long days (LD) also decreased the numbers of flowers and achenes per fruit, but in the timing of their effects none of the growth regulators exactly imitated photoperiod. GA3 application in spring after floral initiation was completed also caused changes similar to those induced by LD (increases in petiole length, number of stolons, leaf area and the rate of production of open flowers). The responses to LD increased with longer duration of light given as a night-break. Even in continuous light there was a further response to GA3. For stem elongation and flower growth, the greatest response to GA3 occurred in continuous light, indicating that one effect of long photoperiods is to increase sensitivity to exogenous gibberellins.
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Claims 13
Claim · model-written summary
Autumn applications of GA3 decreased spring flower number.
- Taxon
- Strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- GA3e0
- Outcome
- numbers of flowerse0
- Direction
- decreasede0
- Qualifier
- during a six-week period of natural short days in autumne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Applications of GA3, 2-NOA or CEPA, made at different times during a six-week period of natural short days in autumn, decreased the numbers of flowers produced in the following spring”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Autumn applications of 2-NOA decreased spring flower number.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- 2-NOAe0
- Outcome
- numbers of flowerse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of GA3, 2-NOA or CEPA, made at different times during a six-week period of natural short days in autumn, decreased the numbers of flowers produced in the following spring”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Autumn applications of CEPA decreased spring flower number.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- CEPAe0
- Outcome
- numbers of flowerse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of GA3, 2-NOA or CEPA, made at different times during a six-week period of natural short days in autumn, decreased the numbers of flowers produced in the following spring”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Growth regulator applications reduced achene number on primary fruits.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Growth Regulatorst0
- Outcome
- number of achenes on the primary fruitse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“where flowers developed, the number of achenes on the primary fruits was always reduced”
t0“Growth Regulators on Growth and Flowering in Strawberry”
Claim · model-written summary
Long days decreased flower number.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Long days (LD)e0
- Outcome
- numbers of flowerse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long days (LD) also decreased the numbers of flowers and achenes per fruit”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Long days decreased achenes per fruit.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- Long days (LD)e0
- Outcome
- achenes per fruite0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long days (LD) also decreased the numbers of flowers and achenes per fruit”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
No tested growth regulator exactly reproduced the timing of photoperiod effects.
- Taxon
- StrawberryFragaria ×ananassat0
- Outcome
- none of the growth regulators exactly imitated photoperiode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the timing of their effects none of the growth regulators exactly imitated photoperiod”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Spring GA3 application increased petiole length, stolon number and leaf area.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- GA3 application in spring after floral initiation was completede0
- Outcome
- petiole length, number of stolons, leaf areae0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3 application in spring after floral initiation was completed also caused changes similar to those induced by LD (increases in petiole length, number of stolons, leaf area and the rate of production of open flowers)”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Spring GA3 application increased the rate of open flower production.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- GA3 application in spring after floral initiation was completede0
- Outcome
- rate of production of open flowerse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA3 application in spring after floral initiation was completed also caused changes similar to those induced by LD (increases in petiole length, number of stolons, leaf area and the rate of production of open flowers)”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Responses to long days increased as night-break light duration lengthened.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- longer duration of light given as a night-breake0
- Outcome
- responses to LDe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The responses to LD increased with longer duration of light given as a night-break”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
GA3 produced an additional response under continuous light.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- GA3e0
- Outcome
- further responsee0
- Qualifier
- continuous lighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even in continuous light there was a further response to GA3”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
The strongest GA3 response in stem elongation and flower growth occurred in continuous light.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- GA3e0
- Outcome
- stem elongation and flower growthe0
- Direction
- greatest responsee0
- Qualifier
- continuous lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For stem elongation and flower growth, the greatest response to GA3 occurred in continuous light”
t0“Strawberry,Fragaria χ AnanassaDuch.”
Claim · model-written summary
Long photoperiods may increase strawberry sensitivity to exogenous gibberellins.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- long photoperiodse0
- Outcome
- sensitivity to exogenous gibberellinse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating that one effect of long photoperiods is to increase sensitivity to exogenous gibberellins”
t0“Strawberry,Fragaria χ AnanassaDuch.”
The same questions in other papers
Gibberellic acid · growth · Fragaria x ananassa (strawberry)Results differ
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- no effect
- no effect
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See all 37 papers →Gibberellic acid · yield · Fragaria x ananassa (strawberry)Positive and negative results
37 papers in the same direction as this paper · 1 in the opposite direction
- positive
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See all 39 papers →light · phenology · Fragaria x ananassa (strawberry)Results differ
12 papers in the same direction as this paper · 21 in the opposite direction
- positive
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See all 34 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.