Abstract
The potential for using gibberellins (GAS) to modify time of flowering and fruit maturity in mango was investigated. Winter spraying of mango trees grown in the coastal subtropics of Queensland (latitude 27OS) with gibberellin A3 (GA3) or GA4 solutions caused a delay in flowering time of up to 4 weeks, depending on cultivar (Kensington Pride, Glenn, Early Gold) and concentration (50-200 mg/L). There was also a general reduction in number of panicles, particularly at higher GA concentrations. Similar experiments with GA3 on cvv. Kensington Pride and Keitt in tropical North Queensland (latitude 17¦S) did not show any effect either on time or extent of flowering. Fruit yield was highly correlated with the proportion of terminal buds that flowered. Consequently, GA treatments caused significant yield reductions in cv. Kensington Pride, especially at 200 mg/L where only 23% of terminal buds flowered. Fruit size was inversely related to yield, and yield was influenced by tree size. Delayed flowering also resulted in later fruit maturation, by up to 2 weeks. With Early Gold, late-flowering panicles retained 3 times more fruit than those which flowered early, which was possibly related to differences in night temperatures before or at anthesis. Delays in flowering time, which lead to somewhat lesser delays in fruit maturation, can be achieved with suitable GA treatments, but concentration and timing of application are critical if flowering and, hence, yields are not to be reduced. The potential use of this treatment in commercial mango orchards is discussed in relation to extending the fruit production season.
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
Winter GA3 spray delayed mango flowering by up to four weeks in coastal subtropical Queensland.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicae0 - Treatment
- gibberellin A3 (GA3)e0
- Outcome
- flowering timee0
- Direction
- delaye0
- Value
- up to 4 weekse0
- Setting
- coastal subtropics of Queenslande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“Winter spraying of mango trees grown in the coastal subtropics of Queensland (latitude 27OS) with gibberellin A3 (GA3) or GA4 solutions caused a delay in flowering time of up to 4 weeks”
Claim · model-written summary
Winter GA4 spray delayed mango flowering by up to four weeks in coastal subtropical Queensland.
- Taxon
- mangoMangifera indicae0
- Treatment
- GA4 solutionse0
- Outcome
- flowering timee0
- Direction
- delaye0
- Value
- up to 4 weekse0
- Setting
- coastal subtropics of Queenslande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter spraying of mango trees grown in the coastal subtropics of Queensland (latitude 27OS) with gibberellin A3 (GA3) or GA4 solutions caused a delay in flowering time of up to 4 weeks”
Claim · model-written summary
GA treatments generally reduced panicle number, especially at higher concentration.
- Taxon
- mangoMangifera indicae1
- Treatment
- GAe0
- Outcome
- number of paniclese0
- Direction
- reductione0
- Qualifier
- particularly at higher GA concentrationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was also a general reduction in number of panicles, particularly at higher GA concentrations.”
e1“mango trees”
Claim · model-written summary
GA3 did not affect timing of flowering in Kensington Pride and Keitt in tropical North Queensland.
- Taxon
- mangoMangifera indicat0
- Treatment
- GA3e0
- Outcome
- time or extent of floweringe0
- Direction
- did not show any effecte0
- Setting
- tropical North Queenslande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar experiments with GA3 on cvv. Kensington Pride and Keitt in tropical North Queensland (latitude 17¦S) did not show any effect either on time or extent of flowering.”
t0“mango”
Claim · model-written summary
GA3 did not affect extent of flowering in Kensington Pride and Keitt in tropical North Queensland.
- Taxon
- mangoMangifera indicat0
- Treatment
- GA3e0
- Outcome
- extent of floweringe0
- Direction
- did not show any effecte0
- Setting
- tropical North Queenslande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar experiments with GA3 on cvv. Kensington Pride and Keitt in tropical North Queensland (latitude 17¦S) did not show any effect either on time or extent of flowering.”
t0“mango”
Claim · model-written summary
Fruit yield was highly correlated with the proportion of flowering terminal buds.
- Taxon
- mangoMangifera indicat0
- Organ / stage
- terminal budse0
- Outcome
- Fruit yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yield was highly correlated with the proportion of terminal buds that flowered.”
t0“mango”
Claim · model-written summary
GA treatments significantly reduced yield in Kensington Pride, especially at 200 mg/L when only 23% of terminal buds flowered.
- Taxon
- mangoMangifera indicat0
- Material
- Kensington Pridee0
- Treatment
- GA treatmentse0
- Outcome
- yielde0
- Direction
- reductionse0
- Qualifier
- especially at 200 mg/L where only 23% of terminal buds flowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA treatments caused significant yield reductions in cv. Kensington Pride, especially at 200 mg/L where only 23% of terminal buds flowered.”
t0“mango”
Claim · model-written summary
Fruit size was inversely related to yield.
- Taxon
- mangoMangifera indicat0
- Organ / stage
- Fruite0
- Outcome
- Fruit sizee0
- Qualifier
- yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit size was inversely related to yield”
t0“mango”
Claim · model-written summary
Yield was influenced by tree size.
- Taxon
- mangoMangifera indicat0
- Organ / stage
- treee0
- Outcome
- yielde0
- Qualifier
- tree sizee0
Not reportedMaterialDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield was influenced by tree size”
t0“mango”
Claim · model-written summary
Delayed flowering led to fruit maturation up to two weeks later.
- Taxon
- mangoMangifera indicat0
- Organ / stage
- fruite0
- Outcome
- fruit maturatione0
- Direction
- latere0
- Value
- up to 2 weekse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed flowering also resulted in later fruit maturation, by up to 2 weeks.”
t0“mango”
Claim · model-written summary
Late-flowering Early Gold panicles retained three times more fruit than early-flowering panicles.
- Taxon
- mangoMangifera indicat0
- Material
- Early Golde0
- Outcome
- fruite0
- Direction
- moree0
- Value
- 3 timese0
- Comparator
- those which flowered earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With Early Gold, late-flowering panicles retained 3 times more fruit than those which flowered early”
t0“mango”
Claim · model-written summary
The authors recommend careful GA concentration and timing to delay flowering without reducing flowering and yield.
- Taxon
- mangoMangifera indicat0
- Treatment
- GA treatmentse0
- Outcome
- concentration and timing of applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delays in flowering time, which lead to somewhat lesser delays in fruit maturation, can be achieved with suitable GA treatments, but concentration and timing of application are critical if flowering and, hence, yields are not to be reduced.”
t0“mango”
The same questions in other papers
Gibberellic acid · yield · Mangifera indica (mango)Results differ
18 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 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.