Abstract
SummaryPollen formation and receptacle and achene development were studied in four varieties of strawberry growing in glasshouses and growth cabinets. Low temperatures and short days reduced pollen fertility but had only a small effect on percentage fertilization rates following the use of fertile pollen. Merton Princess and Redgauntlet were affected more adversely than other varieties by short days and low temperatures.Tests made with Redgauntlet at 10°, 12.5° and 15 °C in long and short days at two light intensity levels showed that temperature was the major environmental factor regulating pollen formation, achene fertilization and receptacle development. Receptacle size at. maturity tended to be inversely proportional to temperature, but the relationship was modified by other factors, such as the position of the receptacle on the flower truss, the level of fertilization achieved, interactions with light intensity and photoperiod, and the level of embryo abortion during achene development. Long days promoted rapid development of the receptacle and a short period from anthesis to maturity. Low light intensities restricted receptacle size by reducing both the mean daily incremental growth rate and the level of pollen formation.Correlations between achene number and receptacle size were sensitive to variations in the physical conditions of the environment, as well as to internal factors such as the position of the receptacle on the flower truss.
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Claims 12
Claim · model-written summary
Low temperatures and short days reduced pollen fertility.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- Low temperatures and short dayse0
- Outcome
- pollen fertilitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Low temperatures and short days reduced pollen fertility”
t0“in the strawberry”
Claim · model-written summary
Low temperatures and short days had a small effect on fertilization with fertile pollen.
- Taxon
- strawberryFragaria ×ananassat0
- Outcome
- percentage fertilization ratese0
- Qualifier
- following the use of fertile pollene0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had only a small effect on percentage fertilization rates following the use of fertile pollen”
t0“in the strawberry”
Claim · model-written summary
Merton Princess was more adversely affected by short days and low temperatures.
- Taxon
- strawberryFragaria ×ananassat0
- Material
- Merton Princesse0
- Treatment
- short days and low temperaturese0
- Outcome
- affected more adverselye0
- Direction
- more adverselye0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merton Princess and Redgauntlet were affected more adversely than other varieties by short days and low temperatures”
t0“in the strawberry”
Claim · model-written summary
Redgauntlet was more adversely affected by short days and low temperatures.
- Taxon
- strawberryFragaria ×ananassat0
- Material
- Redgauntlete0
- Treatment
- short days and low temperaturese0
- Outcome
- affected more adverselye0
- Direction
- more adverselye0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merton Princess and Redgauntlet were affected more adversely than other varieties by short days and low temperatures”
t0“in the strawberry”
Claim · model-written summary
Temperature was the major factor regulating pollen formation, achene fertilization and receptacle development.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- temperaturee0
- Outcome
- pollen formation, achene fertilization and receptacle developmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“temperature was the major environmental factor regulating pollen formation, achene fertilization and receptacle development”
t0“in the strawberry”
Claim · model-written summary
Mature receptacle size tended to decrease as temperature rose.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- temperaturee0
- Outcome
- Receptacle size at. maturitye0
- Direction
- inversely proportionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Receptacle size at. maturity tended to be inversely proportional to temperature”
t0“in the strawberry”
Claim · model-written summary
Long days promoted rapid receptacle development.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Long dayse0
- Outcome
- rapid development of the receptaclee0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long days promoted rapid development of the receptacle”
t0“in the strawberry”
Claim · model-written summary
Long days shortened the interval from anthesis to maturity.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Long dayse0
- Outcome
- period from anthesis to maturitye0
- Direction
- shorte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long days promoted rapid development of the receptacle and a short period from anthesis to maturity”
t0“in the strawberry”
Claim · model-written summary
Low light intensity restricted receptacle size.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Low light intensitiese0
- Outcome
- receptacle sizee0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low light intensities restricted receptacle size by reducing both the mean daily incremental growth rate and the level of pollen formation”
t0“in the strawberry”
Claim · model-written summary
Low light intensity reduced daily incremental growth rate.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Low light intensitiese0
- Outcome
- mean daily incremental growth ratee0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low light intensities restricted receptacle size by reducing both the mean daily incremental growth rate and the level of pollen formation”
t0“in the strawberry”
Claim · model-written summary
Low light intensity reduced pollen formation.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Low light intensitiese0
- Outcome
- level of pollen formatione0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low light intensities restricted receptacle size by reducing both the mean daily incremental growth rate and the level of pollen formation”
t0“in the strawberry”
Claim · model-written summary
The achene number and receptacle size correlation varied with physical conditions and internal factors.
- Taxon
- strawberryFragaria ×ananassat0
- Organ / stage
- receptaclee0
- Outcome
- Correlations between achene number and receptacle sizee0
- Qualifier
- physical conditions of the environmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Correlations between achene number and receptacle size were sensitive to variations in the physical conditions of the environment, as well as to internal factors such as the position of the receptacle on the flower truss”
t0“in the strawberry”
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See all 68 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.