Abstract
SummaryIn satsuma (Citrus unshiu, cv. Clausellina) mandarin trees, defoliation shortly after anthesis of old (previous season) or young (current season) leaves increased fruitlet abscission (up to 60%) during the following 12 weeks.Defoliation also advanced the beginning of abscission. In foliated plants, maximum rates of abscission were reached 41 d after anthesis (DAA), whereas in plants without old or young leaves maximum abscission rates occurred 32 and 54 DAA, respectively. Gibberellin (GA) and carbohydrate concentrations were determined by GC-MS and HPLC, respectively. Defoliation didnot substantially modify the endogenous levels of the active GA1, although the precursors and products of this GA changed mostly at 32 DAA. Thereafter, GA concentrations were similar in foliated and defoliated plants. Carbohydrate concentrations were low, and the highest differences were observed at 21 DAA. At this time, sucrose and hexoses were slightly lower and higher, respectively, in fruitlets on defoliated plants. Higher abscission rates of fruitlet of leafless inflorescences were also associated with reduced amounts of sucrose and higher hexose concentrations during this period.The data suggest that removal of either old or young leaves advanced and increased abscission, and reduced the sucrose/hexose ratio of fruitlets during the initial period of fruit set.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Removal of old leaves increased fruitlet abscission up to 60%.
- Taxon
- satsuma (Citrus unshiu, cv. Clausellina) mandarin trees
Citrus unshiue0 - Treatment
- defoliation shortly after anthesis of old (previous season)e0
- Outcome
- fruitlet abscissione0
- Direction
- increasede0
- Value
- up to 60%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In satsuma (Citrus unshiu, cv. Clausellina) mandarin trees, defoliation shortly after anthesis of old (previous season) or young (current season) leaves increased fruitlet abscission (up to 60%) during the following 12 weeks.”
Claim · model-written summary
Removal of young leaves increased fruitlet abscission up to 60%.
- Taxon
- satsuma (Citrus unshiu, cv. Clausellina) mandarin treesCitrus unshiue0
- Treatment
- young (current season) leavese0
- Outcome
- fruitlet abscissione0
- Direction
- increasede0
- Value
- up to 60%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In satsuma (Citrus unshiu, cv. Clausellina) mandarin trees, defoliation shortly after anthesis of old (previous season) or young (current season) leaves increased fruitlet abscission (up to 60%) during the following 12 weeks.”
Claim · model-written summary
Defoliation advanced the beginning of abscission.
CitrusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation also advanced the beginning of abscission.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Maximum abscission occurred 41 days after anthesis in foliated plants.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In foliated plants, maximum rates of abscission were reached 41 d after anthesis (DAA), whereas in plants without old or young leaves maximum abscission rates occurred 32 and 54 DAA, respectively.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Maximum abscission occurred at 32 days after anthesis without old leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In foliated plants, maximum rates of abscission were reached 41 d after anthesis (DAA), whereas in plants without old or young leaves maximum abscission rates occurred 32 and 54 DAA, respectively.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Maximum abscission occurred at 54 days after anthesis without young leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In foliated plants, maximum rates of abscission were reached 41 d after anthesis (DAA), whereas in plants without old or young leaves maximum abscission rates occurred 32 and 54 DAA, respectively.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Defoliation did not substantially modify active GA1 levels.
- Treatment
- Defoliatione0
- Outcome
- endogenous levels of the active GA1e0
- Direction
- didnot substantially modifye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation didnot substantially modify the endogenous levels of the active GA1”
t0“citrus fruitlet abscission”
Claim · model-written summary
Defoliation changed GA precursors and products mostly at 32 days after anthesis.
- Treatment
- Defoliatione0
- Outcome
- precursors and products of this GAe0
- Direction
- changede0
- Qualifier
- 32 DAAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Defoliation didnot substantially modify the endogenous levels of the active GA1, although the precursors and products of this GA changed mostly at 32 DAA.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Sucrose was slightly lower in fruitlets of defoliated plants at 21 days after anthesis.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At this time, sucrose and hexoses were slightly lower and higher, respectively, in fruitlets on defoliated plants.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Hexoses were slightly higher in fruitlets of defoliated plants.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At this time, sucrose and hexoses were slightly lower and higher, respectively, in fruitlets on defoliated plants.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Higher abscission in leafless inflorescences was associated with reduced sucrose.
- Organ / stage
- leafless inflorescencese0
- Compound
- sucrosee0
- Outcome
- abscission rates of fruitlete0
- Direction
- Highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher abscission rates of fruitlet of leafless inflorescences were also associated with reduced amounts of sucrose and higher hexose concentrations during this period.”
t0“citrus fruitlet abscission”
Claim · model-written summary
Higher abscission in leafless inflorescences was associated with higher hexose.
- Organ / stage
- leafless inflorescencese0
- Compound
- hexosee0
- Outcome
- abscission rates of fruitlete0
- Direction
- Highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher abscission rates of fruitlet of leafless inflorescences were also associated with reduced amounts of sucrose and higher hexose concentrations during this period.”
t0“citrus fruitlet abscission”
The same questions in other papers
pruning · yield · Citrus unshiu (satsuma mandarin)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- no effect
pruning · molecular: metabolites · CitrusPositive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- no effect
2 papers more in this group
See all 6 papers →pruning · yield · CitrusPositive and negative results
4 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 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.