Abstract
The effects of limiting leaf area during the early stages of berry development on further berry growth and composition were investigated. Leaves were removed from fruiting grapevine cuttings (Vitis vinifera L., cv. Cabernet Sauvignon) just after fruit set giving a leaf area per berry of 1 cm2 and 3.3 cm2 for the treated and the control plants, respectively. Photosynthetic compensation did not occur at this stage. During the period of slow berry growth, the source capacities were restored by the development of new leaves. Consequently, at veraison, the leaf area per plant was similar for both groups of plants. Leaf removal just after fruit set strongly reduced berry growth. At the end of the first growth period, the berry fresh weight of the treated plants was half that of the control plants. The pericarp cell size was very much affected. Leaf area restoration allowed the treated berries to grow at the same relative growth rate as control berries during stage III. However growth rate compensation did not occur, and berry size at maturity was proportional to the size before veraison. Limiting leaf area shortened the first active growth period of the berries and delayed the onset of ripening. Berry composition was also affected by leaf removal. Osmolarity, titratable acidity, malic acid and soluble sugar concentration in the juice were significantly reduced on the treated plants at the end of the first growth period. Tartaric acid concentration was unaffected. At maturity, the organic acids and fructose concentrations were higher for the LS berries. Osmolarity, titratable acidity, and hexose accumulation rate were unaffected. We conclude that an early assimilate limitation affects the final berry size, but does not reduce the potential growth and accumulation capacities of small berries during ripening.
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Claims 16
Claim · model-written summary
Photosynthetic compensation did not occur after early leaf removal.
- Taxon
- Vitis vinifera L.
Vitis viniferat0 - Outcome
- Photosynthetic compensatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic compensation did not occur at this stage.”
t0“Vitis viniferaL.”
Claim · model-written summary
New leaves restored source capacity during slow berry growth.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Outcome
- source capacitiese0
- Direction
- restorede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the period of slow berry growth, the source capacities were restored by the development of new leaves.”
t0“Vitis viniferaL.”
Claim · model-written summary
Leaf area per plant was similar at veraison in treated and control plants.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- Leaf removal just after fruit sett1
- Outcome
- leaf area per plante0
- Direction
- similare0
- Comparator
- both groups of plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at veraison, the leaf area per plant was similar for both groups of plants.”
t0“Vitis viniferaL.”
t1“Leaf removal just after fruit set strongly reduced berry growth.”
Claim · model-written summary
Early leaf removal reduced berry growth.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- Leaf removal just after fruit sete0
- Outcome
- berry growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf removal just after fruit set strongly reduced berry growth.”
t0“Vitis viniferaL.”
Claim · model-written summary
At the end of stage I, treated berries had half the fresh weight of controls.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- treated plantse0
- Outcome
- berry fresh weighte0
- Direction
- halfe0
- Value
- halfe0
- Qualifier
- At the end of the first growth periodt1
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the berry fresh weight of the treated plants was half that of the control plants.”
t0“Vitis viniferaL.”
t1“At the end of the first growth period, the berry fresh weight of the treated plants was half that of the control plants.”
Claim · model-written summary
Leaf removal affected pericarp cell size.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Outcome
- pericarp cell sizee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pericarp cell size was very much affected.”
t0“Vitis viniferaL.”
Claim · model-written summary
Restored leaf area allowed treated berries the same relative growth rate as controls in stage III.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Organ / stage
- stage IIIe0
- Treatment
- Leaf area restoratione0
- Outcome
- relative growth ratee0
- Direction
- samee0
- Comparator
- control berriese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf area restoration allowed the treated berries to grow at the same relative growth rate as control berries during stage III.”
t0“Vitis viniferaL.”
Claim · model-written summary
Growth rate compensation did not occur.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Outcome
- growth rate compensatione0
- Direction
- did not occure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However growth rate compensation did not occur”
t0“Vitis viniferaL.”
Claim · model-written summary
Mature berry size was proportional to size before veraison.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Organ / stage
- before veraisone0
- Outcome
- berry size at maturitye0
- Direction
- proportionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“berry size at maturity was proportional to the size before veraison.”
t0“Vitis viniferaL.”
Claim · model-written summary
Leaf limitation shortened the first active berry growth period.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- Limiting leaf areae0
- Outcome
- first active growth period of the berriese0
- Direction
- shortenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Limiting leaf area shortened the first active growth period of the berries”
t0“Vitis viniferaL.”
Claim · model-written summary
Leaf limitation delayed ripening onset.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- Limiting leaf areae0
- Outcome
- onset of ripeninge0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Limiting leaf area shortened the first active growth period of the berries and delayed the onset of ripening.”
t0“Vitis viniferaL.”
Claim · model-written summary
At the first growth period end, treated juice had lower osmolarity, titratable acidity and malic acid.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- treated plantse0
- Outcome
- Osmolarity, titratable acidity, malic acide0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Osmolarity, titratable acidity, malic acid and soluble sugar concentration in the juice were significantly reduced on the treated plants at the end of the first growth period.”
t0“Vitis viniferaL.”
Claim · model-written summary
At the first growth period end, treated juice had lower soluble sugar concentration.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- treated plantse0
- Outcome
- soluble sugar concentration in the juicee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Osmolarity, titratable acidity, malic acid and soluble sugar concentration in the juice were significantly reduced on the treated plants at the end of the first growth period.”
t0“Vitis viniferaL.”
Claim · model-written summary
Tartaric acid concentration was unaffected.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- leaf removalt1
- Outcome
- Tartaric acid concentratione0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tartaric acid concentration was unaffected.”
t0“Vitis viniferaL.”
t1“Berry composition was also affected by leaf removal.”
Claim · model-written summary
At maturity, organic acid and fructose concentrations were higher in LS berries.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- LS berriese0
- Outcome
- organic acids and fructose concentrationse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At maturity, the organic acids and fructose concentrations were higher for the LS berries.”
t0“Vitis viniferaL.”
Claim · model-written summary
At maturity, osmolarity, titratable acidity and hexose accumulation rate were unaffected.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- leaf removalt1
- Outcome
- Osmolarity, titratable acidity, and hexose accumulation ratee0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Osmolarity, titratable acidity, and hexose accumulation rate were unaffected.”
t0“Vitis viniferaL.”
t1“Berry composition was also affected by leaf removal.”
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See all 54 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.