Abstract
Measurements of the daily maximum rate of photosynthesis (Amax) of leaves of ungrafted and grafted field-grown grapevine varieties indicated higher rates in vines grafted to the rootstock Kober 5BB. While higher rates of Amax in grafted Orion and Gf.Ga-54-14 vines were linked to both higher values of the carboxylation efficiency and of stomatal conductance in Riesling and Gf.Ga-47-42 vines, it was associated with increases of the carboxylation efficiency but not with stomatal conductance. This led to distinctly higher values of the water use efficiency of grafted Riesling and Gf.Ga-47-42 vines. Similar results were obtained using four-year-old potted vines; Riesling grafted to Kober 5BB had significantly higher rates of photosynthesis but similar rates of stomatal conductance compared to ungrafted Riesling or Riesling grafted to Riesling. Within the first four years the rate of photosynthesis of leaves of ungrafted and grafted Riesling vines increased more than twofold. It is suggested that grafting vines to appropriate rootstock varieties which favor the increase of the carboxylation efficiency of scion leaves may help to improve drought resistance by raising the water use efficiency.
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 9
Claim · model-written summary
Vines grafted to rootstock Kober 5BB had higher daily maximum photosynthesis rates (Amax) in leaves than ungrafted field-grown grapevines.
- Treatment
- grafted to the rootstock Kober 5BBe1
- Outcome
- daily maximum rate of photosynthesis (Amax) of leavese1
- Direction
- higher ratese1
- Comparator
- ungraftede1
- Setting
- field-growne1
VitisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Measurements of the daily maximum rate of photosynthesis (Amax) of leaves of ungrafted and grafted field-grown grapevine varieties indicated higher rates in vines grafted to the rootstock Kober 5BB”
Claim · model-written summary
Higher Amax in grafted Orion and Gf.Ga-54-14 vines was linked to higher carboxylation efficiency and stomatal conductance.
Verbatim
e1“While higher rates of Amax in grafted Orion and Gf.Ga-54-14 vines were linked to both higher values of the carboxylation efficiency and of stomatal conductance”
Claim · model-written summary
Higher Amax in Riesling and Gf.Ga-47-42 vines was associated with increased carboxylation efficiency.
Verbatim
e1“Riesling and Gf.Ga-47-42 vines, it was associated with increases of the carboxylation efficiency but not with stomatal conductance”
Claim · model-written summary
Higher Amax in Riesling and Gf.Ga-47-42 vines was not associated with a change in stomatal conductance.
Verbatim
e1“Riesling and Gf.Ga-47-42 vines, it was associated with increases of the carboxylation efficiency but not with stomatal conductance”
Claim · model-written summary
Grafted Riesling (Kober 5BB) vines had significantly higher photosynthesis rates than ungrafted Riesling or Riesling grafted to Riesling in potted vines.
Verbatim
e1“Riesling grafted to Kober 5BB had significantly higher rates of photosynthesis but similar rates of stomatal conductance compared to ungrafted Riesling or Riesling grafted to Riesling”
e2“Similar results were obtained using four-year-old potted vines”
Claim · model-written summary
Grafted Riesling (Kober 5BB) vines had similar stomatal conductance to ungrafted Riesling or Riesling grafted to Riesling in potted vines.
Verbatim
e1“Riesling grafted to Kober 5BB had significantly higher rates of photosynthesis but similar rates of stomatal conductance compared to ungrafted Riesling or Riesling grafted to Riesling”
e2“Similar results were obtained using four-year-old potted vines”
Claim · model-written summary
Photosynthesis rate of leaves of ungrafted and grafted Riesling vines increased more than twofold within the first four years.
Verbatim
e1“Within the first four years the rate of photosynthesis of leaves of ungrafted and grafted Riesling vines increased more than twofold”
Claim · model-written summary
Grafting raised water use efficiency in Riesling and Gf.Ga-47-42 vines.
Verbatim
e1“This led to distinctly higher values of the water use efficiency of grafted Riesling and Gf.Ga-47-42 vines”
Claim · model-written summary
Grafting vines to rootstocks that favor carboxylation efficiency may help improve drought resistance.
Verbatim
e1“It is suggested that grafting vines to appropriate rootstock varieties which favor the increase of the carboxylation efficiency of scion leaves may help to improve drought resistance by raising the water use efficiency”
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.