Abstract
The quality characteristics of a certain grapevine cultivar are determined by the combinatorial action of the genotype and environmental factors, such as soil, landscape and climate. Another critical parameter is the viticultural techniques utilised to improve grape berry quality. The influence of two viticultural practices, deficit irrigation and leaf removal, on the Greek Vitis vinifera L. cultivar ‘Xinomavro’ was investigated during the 2019 and 2020 vintages. Physiology measurements and berry sampling were performed at three phenological stages (green berry, veraison and harvest). The expression of specific genes known to control grape colour, aroma and flavour was studied in conjunction with berry growth and composition. All the parameters contributing to final yield, such as berry size, cluster weight and yield/vine, were reduced in non-irrigated and defoliated vines compared to their control (irrigated and non-defoliated) vines. Both treatments showed a significant increase in anthocyanin level, whereas total phenols increased in the deficit irrigation treatment only. Water deficit had no effect on total soluble solids, whereas leaf removal resulted in significantly increased levels compared to the controls. The expression profile of the genes examined was altered during ripening. Although both water deficit and defoliation positively influenced gene expression, there were several diverse responses among the phenological stages that depended on the vintage.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 10
Claim · model-written summary
Non-irrigated vines had reduced berry size, cluster weight, and yield per vine compared with irrigated controls.
- Taxon
- Vitis vinifera L.
Vitis viniferat0 - Material
- Xinomavrot0
- Treatment
- non-irrigatede0
- Outcome
- berry size, cluster weight and yield/vinee0
- Direction
- reducede0
- Comparator
- irrigated and non-defoliatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the parameters contributing to final yield, such as berry size, cluster weight and yield/vine, were reduced in non-irrigated and defoliated vines compared to their control (irrigated and non-defoliated) vines.”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Defoliated vines had reduced berry size, cluster weight, and yield per vine compared with non-defoliated controls.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- defoliatede0
- Outcome
- berry size, cluster weight and yield/vinee0
- Direction
- reducede0
- Comparator
- irrigated and non-defoliatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the parameters contributing to final yield, such as berry size, cluster weight and yield/vine, were reduced in non-irrigated and defoliated vines compared to their control (irrigated and non-defoliated) vines.”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Deficit irrigation significantly increased berry anthocyanin level.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- deficit irrigatione1
- Outcome
- anthocyanin levele0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both treatments showed a significant increase in anthocyanin level”
e1“deficit irrigation and leaf removal”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Leaf removal significantly increased berry anthocyanin level.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- leaf removale1
- Outcome
- anthocyanin levele0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both treatments showed a significant increase in anthocyanin level”
e1“deficit irrigation and leaf removal”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Total phenols increased under deficit irrigation only.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- deficit irrigatione0
- Outcome
- total phenolse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total phenols increased in the deficit irrigation treatment only”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Water deficit had no effect on total soluble solids.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- Water deficite0
- Outcome
- total soluble solidse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit had no effect on total soluble solids”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Leaf removal significantly increased total soluble solids compared with controls.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- leaf removale0
- Outcome
- total soluble solidse1
- Direction
- increasede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf removal resulted in significantly increased levels compared to the controls”
e1“total soluble solids”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Expression profiles of the examined genes changed during ripening.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Organ / stage
- ripeninge0
- Outcome
- expression profile of the genes examinede0
- Direction
- alterede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression profile of the genes examined was altered during ripening.”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Water deficit positively influenced gene expression, with stage and vintage dependent responses.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- water deficite0
- Outcome
- gene expressione0
- Direction
- positively influencede0
- Qualifier
- depended on the vintagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although both water deficit and defoliation positively influenced gene expression, there were several diverse responses among the phenological stages that depended on the vintage.”
t0“Vitis vinifera L. cultivar Xinomavro”
Claim · model-written summary
Defoliation positively influenced gene expression, with stage and vintage dependent responses.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Material
- Xinomavrot0
- Treatment
- defoliatione0
- Outcome
- gene expressione0
- Direction
- positively influencede0
- Qualifier
- depended on the vintagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although both water deficit and defoliation positively influenced gene expression, there were several diverse responses among the phenological stages that depended on the vintage.”
t0“Vitis vinifera L. cultivar Xinomavro”
The same questions in other papers
drought · quality: sugar starch · Vitis vinifera (wine grape)Results differ
9 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →pruning · quality: phytochemicals · Vitis vinifera (wine grape)Results differ
42 papers in the same direction as this paper · 5 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
- positive
47 papers more in this group
See all 51 papers →pruning · quality: sugar starch · Vitis vinifera (wine grape)Results differ
37 papers in the same direction as this paper · 15 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- positive
- no effect
50 papers more in this group
See all 54 papers →drought · molecular: expression · Vitis vinifera (wine grape)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
3 papers more in this group
See all 7 papers →irrigation · quality: phytochemicals · Vitis vinifera (wine grape)Positive and negative results
15 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
22 papers more in this group
See all 26 papers →pruning · yield · Vitis vinifera (wine grape)Positive and negative results
53 papers in the same direction as this paper · 41 in the opposite direction
- positive
- no effect
- negative
91 papers more in this group
See all 95 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.