Abstract
The interaction between variety, rootstock, and trellis height is important for grapevine management, mainly for producing new varieties of grapes for juice and wine in new wine-growing regions with high production potential. Then, this study aimed to evaluate the rootstocks and trellis height influence on photosynthesis, biochemical, and yield performance for grapevine hybrids. The experiment was carried out in a randomized block design using two factors, rootstocks (‘IAC 766’ and ‘106-8 Mgt’) and trellis height (until 1.6 and 2.0 m), evaluated for two grapevine hybrids (IAC 138-22 ‘Maximo’ and ‘BRS Violeta’). During grapevine flowering, it was evaluated photosynthesis and biochemical performance, for this, the gaseous exchanges were measured using the open system photosynthesis equipment with a CO2 analyzer and water vapor by infrared radiation, being net assimilation rate of CO2, stomatal conductance, transpiration rate, internal CO2 concentration, water use efficiency, carboxylation efficiency (Rubisco), and the flux density of photosynthetically active photons. At the stages of grapevine flowering and ripening berries were evaluated the antioxidant enzymes (peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT)), total soluble proteins, chlorophylls, and SPAD. The interaction between rootstock and trellis heigh influenced varieties’ photosynthesis, biochemical, and yield performance. In conclusion under subtropical conditions, better photosynthesis, biochemical, and yield performance were observed when both cultivars were grafted on the ‘IAC 766’ rootstock. The ‘IAC 138-22 Maximo’ was trained until 2.0 and grafted on the ‘IAC 766’ rootstock, increasing grape production and photosynthesis efficiency. In addition, this variety was more productive than ‘BRS Violeta’.
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Claims 4
Claim · model-written summary
Rootstock and trellis height interacted in their effects on photosynthesis, biochemistry, and yield.
VitisNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction between rootstock and trellis heigh influenced varieties’ photosynthesis, biochemical, and yield performance.”
t0“Grapevine Hybrids”
Claim · model-written summary
Both grapevine cultivars performed better physiologically and in yield on IAC 766 rootstock under subtropical conditions.
- Treatment
- ‘IAC 766’ rootstocke0
- Outcome
- photosynthesis, biochemical, and yield performancee0
- Direction
- bettere0
- Setting
- subtropical conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under subtropical conditions, better photosynthesis, biochemical, and yield performance were observed when both cultivars were grafted on the ‘IAC 766’ rootstock”
t0“Grapevine Hybrids”
Claim · model-written summary
IAC 138-22 Maximo trained to 2.0 m on IAC 766 increased grape production and photosynthesis efficiency.
- Material
- ‘IAC 138-22 Maximo’e0
- Treatment
- trained until 2.0 and grafted on the ‘IAC 766’ rootstocke0
- Outcome
- grape production and photosynthesis efficiencye0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ‘IAC 138-22 Maximo’ was trained until 2.0 and grafted on the ‘IAC 766’ rootstock, increasing grape production and photosynthesis efficiency.”
t0“Grapevine Hybrids”
Claim · model-written summary
IAC 138-22 Maximo was more productive than BRS Violeta.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this variety was more productive than ‘BRS Violeta’”
e1“The ‘IAC 138-22 Maximo’ was trained”
t0“Grapevine Hybrids”
The same questions in other papers
grafting · physiology: photosynthesis · VitisPositive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.