What question did this study set out to answer?

To determine whether vine water status alters winegrape anthocyanin and tannin content directly or primarily through changes in berry size.

July 1, 2004Australian Journal of Grape and Wine Research

Berry size and vine water deficits as factors in winegrape composition: Anthocyanins and tannins

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Authors

GRGASPAR ROBYUniversity of California, Davis JHJames F. HarbertsonWashington State University Tri-Cities DADouglas A. AdamsUConn Health

Discussion

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Implication

Controlled experiment reveals vine water deficits increase skin anthocyanin and tannin concentrations in winegrapes, indicating direct compositional effects beyond changes in berry size.

Key Points

To determine whether vine water status alters winegrape anthocyanin and tannin content directly or primarily through changes in berry size.
Assigned Cabernet Sauvignon vines to high, control, or low water status during the ripening period.
Segregated harvested berries into six distinct size classes across treatments to decouple berry size effects from water deficit effects.
Measured soluble solids (Brix), seed tannin, skin tannin, and skin anthocyanin content and concentrations.
Water deficits increased skin tannin and anthocyanin content per berry as well as their concentrations, with water status having a larger effect on skin phenolics than berry size.
Seed tannin content varied primarily with berry size rather than vine water status, showing no significant concentration changes under water deficits.
Berry solute content generally scaled with berry size, but deviations caused Brix and anthocyanin concentrations to decrease as berry size increased.

Cite This Study

ROBY et al. (2004) studied this question.

synapsesocial.com/papers/6a7a32fd1ba4614d7ff3d07f https://doi.org/10.1111/j.1755-0238.2004.tb00012.x

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Implication

Controlled experiment reveals vine water deficits increase skin anthocyanin and tannin concentrations in winegrapes, indicating direct compositional effects beyond changes in berry size.

Berry size and vine water deficits as factors in winegrape composition: Anthocyanins and tannins

Discussion

Member takes

Implication

Key Points

Cite This Study

Berry size and vine water deficits as factors in winegrape composition: Anthocyanins and tannins

Discussion

Member takes

Implication

Key Points

Cite This Study

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