Abstract
BACKGROUND: Sweet cherry trees (Prunus avium L.) of the cultivar Grace Star were pruned either in dormancy or in summer. The response was studied by analyzing the sugar content in different organs (flower bud, leaf, and fruit) at three sections of the canopy (inner, outer, and upper) using high-performance liquid chromatography. The effect of summer pruning was evaluated by measuring photosynthetic photon flux density (PPFD) and leaf chlorophyll content (SPAD). RESULTS: In this study, the timing of pruning had a significant effect on sugar content in flower buds, leaves, and fruit. Trees pruned in summer had higher glucose, fructose, sorbitol, and sucrose content in flower buds, higher glucose and fructose contents in leaves, and lower fructose, sorbitol, and total sugar content in fruit than in trees pruned at dormancy. Higher average PPFD and lower SPAD values were measured in the inner canopy of trees pruned in summer. All measured parameters were influenced by position in the canopy. The lowest fructose and sorbitol contents in the flower bud, the lowest content of glucose, fructose, sorbitol, total sugars and the highest SPAD values in the leaf, while less dark and lighter fruit were measured in the inner part of the canopy. CONCLUSION: Summer pruning affects sugar distribution in the tree by altering irradiation conditions within the canopy. Our results suggest that summer pruning is an effective technological measure to improve sugar content in the buds. A strong, well nourished flower bud is a good indication of high fruit production next season. © 2021 Society of Chemical Industry.
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Claims 12
Claim · model-written summary
Pruning time significantly affected sugars in buds, leaves and fruit.
- Taxon
- sweet cherry
Prunus aviumt0 - Treatment
- timing of pruninge0
- Outcome
- sugar content in flower buds, leaves, and fruite0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the timing of pruning had a significant effect on sugar content in flower buds, leaves, and fruit.”
t0“sweet cherry”
Claim · model-written summary
Summer pruning increased glucose, fructose, sorbitol and sucrose in flower buds relative to dormancy pruning.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- pruned in summere0
- Outcome
- glucose, fructose, sorbitol, and sucrose content in flower budse0
- Direction
- highere0
- Comparator
- pruned at dormancye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees pruned in summer had higher glucose, fructose, sorbitol, and sucrose content in flower buds, higher glucose and fructose contents in leaves, and lower fructose, sorbitol, and total sugar content in fruit than in trees pruned at dormancy.”
t0“sweet cherry”
Claim · model-written summary
Summer pruning increased glucose and fructose in leaves relative to dormancy pruning.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- pruned in summere0
- Outcome
- glucose and fructose contents in leavese0
- Direction
- highere0
- Comparator
- pruned at dormancye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees pruned in summer had higher glucose, fructose, sorbitol, and sucrose content in flower buds, higher glucose and fructose contents in leaves, and lower fructose, sorbitol, and total sugar content in fruit than in trees pruned at dormancy.”
t0“sweet cherry”
Claim · model-written summary
Summer pruning lowered fructose, sorbitol and total sugar in fruit relative to dormancy pruning.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- pruned in summere0
- Outcome
- fructose, sorbitol, and total sugar content in fruite0
- Direction
- lowere0
- Comparator
- pruned at dormancye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees pruned in summer had higher glucose, fructose, sorbitol, and sucrose content in flower buds, higher glucose and fructose contents in leaves, and lower fructose, sorbitol, and total sugar content in fruit than in trees pruned at dormancy.”
t0“sweet cherry”
Claim · model-written summary
Summer-pruned trees had higher PPFD in the inner canopy.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- pruned in summere0
- Outcome
- average PPFDe0
- Direction
- Highere0
- Setting
- inner canopye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher average PPFD and lower SPAD values were measured in the inner canopy of trees pruned in summer.”
t0“sweet cherry”
Claim · model-written summary
Summer-pruned trees had lower SPAD in the inner canopy.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- pruned in summere0
- Outcome
- SPAD valuese0
- Direction
- lowere0
- Setting
- inner canopye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher average PPFD and lower SPAD values were measured in the inner canopy of trees pruned in summer.”
t0“sweet cherry”
Claim · model-written summary
Every measured parameter varied with canopy position.
- Taxon
- sweet cherryPrunus aviumt0
- Outcome
- All measured parameterse0
- Setting
- position in the canopye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All measured parameters were influenced by position in the canopy.”
t0“sweet cherry”
Claim · model-written summary
Flower buds in the inner canopy had the lowest fructose and sorbitol.
- Taxon
- sweet cherryPrunus aviumt0
- Outcome
- fructose and sorbitol contents in the flower bude0
- Direction
- loweste0
- Setting
- inner part of the canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest fructose and sorbitol contents in the flower bud, the lowest content of glucose, fructose, sorbitol, total sugars and the highest SPAD values in the leaf, while less dark and lighter fruit were measured in the inner part of the canopy.”
t0“sweet cherry”
Claim · model-written summary
Inner canopy leaves had the lowest glucose, fructose, sorbitol and total sugars.
- Taxon
- sweet cherryPrunus aviumt0
- Outcome
- glucose, fructose, sorbitol, total sugarse0
- Direction
- loweste0
- Setting
- inner part of the canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest fructose and sorbitol contents in the flower bud, the lowest content of glucose, fructose, sorbitol, total sugars and the highest SPAD values in the leaf, while less dark and lighter fruit were measured in the inner part of the canopy.”
t0“sweet cherry”
Claim · model-written summary
Inner canopy leaves had the highest SPAD values.
- Taxon
- sweet cherryPrunus aviumt0
- Outcome
- SPAD values in the leafe0
- Direction
- higheste0
- Setting
- inner part of the canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest fructose and sorbitol contents in the flower bud, the lowest content of glucose, fructose, sorbitol, total sugars and the highest SPAD values in the leaf, while less dark and lighter fruit were measured in the inner part of the canopy.”
t0“sweet cherry”
Claim · model-written summary
Inner canopy fruit were less dark and lighter.
- Taxon
- sweet cherryPrunus aviumt0
- Outcome
- less dark and lighter fruite0
- Direction
- lightere0
- Setting
- inner part of the canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“less dark and lighter fruit were measured in the inner part of the canopy.”
t0“sweet cherry”
Claim · model-written summary
Authors recommend summer pruning to improve bud sugar content.
- Taxon
- sweet cherryPrunus aviumt0
- Treatment
- summer pruninge0
- Outcome
- improve sugar content in the budse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“summer pruning is an effective technological measure to improve sugar content in the buds.”
t0“sweet cherry”
The same questions in other papers
pruning · quality: sugar starch · Prunus avium (sweet cherry)Positive and negative results
2 in the opposite direction
- no effect
- no effect
pruning · molecular: metabolites · Prunus avium (sweet cherry)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.