Abstract
This study contrasted the anthocyanins of investigational grape clusters that developed without light incidence (light-excluded), to those of control clusters that were shaded naturally beneath the vine canopy (control-shaded). Treatment grape clusters were light-excluded during ripening by opaque white polypropylene enclosures; temperature, vapor pressure deficit, and light intensity were measured continually. All 15 'Merlot' grape anthocyanins accrued in both groups, indicating no accumulations were terminated from light-exclusion during ripening. Light-excluded clusters had an overall lower anthocyanin concentration (98.1 mg/100 g of berries) than that of control clusters (162.0 mg/100 g of berries), but it was not significantly different. Light-excluded clusters showed altered concentrations of nine individual anthocyanins that were significantly higher in control-shaded clusters. Although the changes in anthocyanin composition could not be attributed solely to the elimination of light, as there were also deviations in berry temperature and vapor pressure deficit concurrent with preventing light from reaching the treatment clusters.
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Claims 4
Claim · model-written summary
All 15 Merlot grape anthocyanins accrued during ripening under light exclusion.
- Taxon
- grapee0
- Material
- Merlote0
- Treatment
- light-exclusion during ripeninge0
- Outcome
- anthocyaninse0
- Direction
- accruede0
Not reportedComparator
Verbatim
e0“All 15 'Merlot' grape anthocyanins accrued in both groups, indicating no accumulations were terminated from light-exclusion during ripening”
Claim · model-written summary
Light-excluded clusters had a lower anthocyanin concentration than control clusters, but the difference was not significant.
Verbatim
e0“All 15 'Merlot' grape anthocyanins accrued in both groups, indicating no accumulations were terminated from light-exclusion during ripening”
e1“Light-excluded clusters had an overall lower anthocyanin concentration (98.1 mg/100 g of berries) than that of control clusters (162.0 mg/100 g of berries), but it was not significantly different”
Claim · model-written summary
Nine individual anthocyanin concentrations were significantly higher in control-shaded clusters than in light-excluded clusters.
Verbatim
e0“All 15 'Merlot' grape anthocyanins accrued in both groups, indicating no accumulations were terminated from light-exclusion during ripening”
e2“Light-excluded clusters showed altered concentrations of nine individual anthocyanins that were significantly higher in control-shaded clusters”
Claim · model-written summary
Berry temperature and vapor pressure deficit deviated concurrently with light exclusion.
Verbatim
e0“All 15 'Merlot' grape anthocyanins accrued in both groups, indicating no accumulations were terminated from light-exclusion during ripening”
e3“there were also deviations in berry temperature and vapor pressure deficit concurrent with preventing light from reaching the treatment clusters”
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See all 18 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.