Abstract
Knowledge about short-term climate change adaptation strategies for Mediterranean vineyards is needed in order to improve grapevine physiology and yield-quality attributes. We investigated effects of kaolin-particle film suspension on water relations, photosynthesis and oxidative stress of field-grown grapevines in the Douro region (northern Portugal) in 2012 and 2013. Kaolin suspension decreased leaf temperature by 18% and increased leaf water potential (up to 40.7% in 2013). Maximum photochemical quantum efficiency of PSII was higher and the minimal chlorophyll fluorescence was lower in the plants sprayed by kaolin. Two months after application, net photosynthesis and stomatal conductance at midday increased by 58.7 and 28.4%, respectively, in treated plants. In the same period, kaolin treatment increased photochemical reflectance, photosynthetic pigments, soluble proteins, soluble sugars, and starch concentrations, while decreased total phenols and thiobarbituric acid-reactive substances. Kaolin application can be an operational tool to alleviate summer stresses, which ameliorates grapevine physiology and consequently leads to a higher yield.
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Claims 11
Claim · model-written summary
Kaolin suspension decreased grapevine leaf temperature by 18%.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e1“Kaolin suspension decreased leaf temperature by 18%”
Claim · model-written summary
Kaolin suspension increased grapevine leaf water potential by up to 40.7% in 2013.
- Treatment
- Kaolin suspensione1
- Outcome
- leaf water potentiale2
- Direction
- increasede2
- Value
- 40.7%e2
- Qualifier
- in 2013e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e1“Kaolin suspension decreased leaf temperature by 18%”
e2“increased leaf water potential (up to 40.7% in 2013)”
Claim · model-written summary
Maximum photochemical quantum efficiency of PSII was higher in kaolin-sprayed grapevines.
- Treatment
- sprayed by kaoline5
- Outcome
- Maximum photochemical quantum efficiency of PSIIe5
- Direction
- highere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e5“Maximum photochemical quantum efficiency of PSII was higher and the minimal chlorophyll fluorescence was lower in the plants sprayed by kaolin”
Claim · model-written summary
Minimal chlorophyll fluorescence was lower in kaolin-sprayed grapevines.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e5“Maximum photochemical quantum efficiency of PSII was higher and the minimal chlorophyll fluorescence was lower in the plants sprayed by kaolin”
Claim · model-written summary
Two months after application, net photosynthesis at midday increased by 58.7% in kaolin-treated grapevines.
- Treatment
- Kaolin suspensione1
- Outcome
- net photosynthesise6
- Direction
- increasede6
- Value
- 58.7e6
- Qualifier
- Two months after applicatione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e1“Kaolin suspension decreased leaf temperature by 18%”
e6“Two months after application, net photosynthesis and stomatal conductance at midday increased by 58.7 and 28.4%, respectively, in treated plants”
Claim · model-written summary
Two months after application, stomatal conductance at midday increased by 28.4% in kaolin-treated grapevines.
- Treatment
- Kaolin suspensione1
- Outcome
- stomatal conductance at middaye6
- Direction
- increasede6
- Value
- 28.4%e6
- Qualifier
- Two months after applicatione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e1“Kaolin suspension decreased leaf temperature by 18%”
e6“Two months after application, net photosynthesis and stomatal conductance at midday increased by 58.7 and 28.4%, respectively, in treated plants”
Claim · model-written summary
Kaolin treatment increased photochemical reflectance, photosynthetic pigments and soluble proteins in grapevines.
- Treatment
- kaolin treatmente7
- Outcome
- photochemical reflectance, photosynthetic pigments, soluble proteinse7
- Direction
- increasede7
- Qualifier
- In the same periode7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e7“In the same period, kaolin treatment increased photochemical reflectance, photosynthetic pigments, soluble proteins, soluble sugars, and starch concentrations”
Claim · model-written summary
Kaolin treatment increased soluble sugars and starch concentrations in grapevines.
- Treatment
- kaolin treatmente7
- Outcome
- soluble sugars, and starch concentrationse7
- Direction
- increasede7
- Qualifier
- In the same periode7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e7“In the same period, kaolin treatment increased photochemical reflectance, photosynthetic pigments, soluble proteins, soluble sugars, and starch concentrations”
Claim · model-written summary
Kaolin treatment decreased total phenols and thiobarbituric acid-reactive substances in grapevines.
- Treatment
- kaolin treatmente7
- Outcome
- total phenols and thiobarbituric acid-reactive substancese1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown grapevines”
e7“In the same period, kaolin treatment increased photochemical reflectance, photosynthetic pigments, soluble proteins, soluble sugars, and starch concentrations”
e1“while decreased total phenols and thiobarbituric acid-reactive substances”
Claim · model-written summary
Kaolin application can be an operational tool to alleviate summer stresses in grapevine.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kaolin application can be an operational tool to alleviate summer stresses”
e1“ameliorates grapevine physiology”
Claim · model-written summary
Kaolin application leads to a higher grapevine yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kaolin application can be an operational tool to alleviate summer stresses”
e1“ameliorates grapevine physiology”
e2“consequently leads to a higher yield”
The same questions in other papers
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kaolin · soil: physics · VitisResults agree
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See all 13 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.