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Article

Rootstock Effects on Deficit-Irrigated Winegrapes in a Dry Climate: Grape and Wine Composition

James F. Harbertson, Markus Keller
Am J Enol Vitic.  2012  63: 40-48  ; DOI: 10.5344/ajev.2011.11079
James F. Harbertson
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  • For correspondence: jfharbertson@wsu.edu
Markus Keller
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    Figure 1

    Relationship between fruit and wine anthocyanins for Merlot (MR) and Syrah (SY) over three vintages. Correlations by scion: MR r = 0.27, p < 0.02; SY r = 0.53, p < 0.001. Correlations by vintage for Merlot: 2007 r = 0.93, p < 0.001; 2008, r = 0.56, p < 0.001; 2009 r = 0.73, p < 0.001. Correlations by vintage for Syrah: 2007 r = 0.82, p < 0.001; 2008 r = 0.61, p < 0.001; 2009 r = 0.72, p < 0.001.

Tables

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  • Table 1

    Effect of rootstock on soluble solids (SS), titratable acidity (TA), pH, and berry weight at harvest on Chardonnay, Merlot, and Syrah over three vintages (2007–2009). Means are presented with standard error.

    Table 1
  • Table 2

    Harvest potassium (K+) data for Syrah, Merlot, and Chardonnay grafted to various rootstocks over two vintages (2008–2009) presented by rootstock, by scion, and by vintage. Means are presented with standard error. Results are provided on fresh weight (FW) basis.

    Table 2
  • Table 3

    Anthocyanins and tannins (skin and seed) for Merlot and Syrah berries grafted to various rootstocks over three vintages (2007–2009) and two scions. Means are presented with standard error. Tannins are presented in catechin equivalents (CE). Results are provided on fresh weight (FW) basis.

    Table 3
  • Table 4

    Wine data for Chardonnay, Merlot, and Syrah grafted to various rootstocks over three vintages (2007–2009). Measurement of potassium only 2008 and 2009. Means are presented with standard error.

    Table 4
  • Table 5

    Ethanol and potassium for Chardonnay, Merlot, and Syrah grafted to various rootstocks over three (ethanol, 2007–2009) or two (potassium, 2008–2009) vintages. Means are presented with standard error.

    Table 5
  • Table 6

    Wine anthocyanins, polymeric pigments (small, SPP; large, LPP; total, TPP, absorbance units, AU), tannins, and total iron reactive phenolics (IRP) data for Merlot and Syrah grafted to various rootstocks over three vintages (2007–2009). Means are presented with standard error. Tannins are presented in catechin equivalents (CE).

    Table 6

Additional Files

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  • Supplemental Data

    Supplemental Table 1   Harvest data for Syrah, Merlot, and Chardonnay grafted to various rootstocks over three vintages (2007-2009) presented on a scion-vintage basis. Means are presented with standard error calculation. Means presented in each column (within a scion) having the same letters are not significantly different at p ≤ 0.05 (Fisher LSD).

    Supplemental Table 2   Harvest potassium data for Syrah, Merlot, and Chardonnay grafted to various rootstocks over three vintages (2008-2009) presented on a scion-vintage basis. Means are presented with standard error calculation. Means presented in each column (within a scion) having the same letters are not significantly different at p ≤ 0.05 (Fisher LSD). Results are provided on fresh weight (FW) basis.

    Supplemental Table 3   Anthocyanins and tannins (skin and seed) for Merlot and Syrah grafted to various rootstocks over three vintages (2007-2009). Seeds per berry were not significant for scion-vintage effects. Means are presented with standard error calculation. Means presented in each column (within a scion) having the same letters are not significantly different at p ≤ 0.05 (Fisher LSD). Tannins are presented in catechin equivalents (CE). Results are provided on fresh weight (FW) basis.

    Supplemental Table 4   Wine data for Chardonnay, Merlot, and Syrah grafted to various rootstocks over three vintages (2007-2009) expressed on a scion-vintage basis. Means are presented with standard error calculation. Means presented in each column (within a scion) having the same letters are not significantly different at p ≤ 0.05 (Fisher LSD).

    Supplemental Table 5   Wine anthocyanins, polymeric pigments (small, SPP; large, LPP; total, TPP, absorbance units, AU), tannins, and total iron reactive phenolics (IRP) data for Syrah and Merlot grafted to various rootstocks over three vintages (2007-2009) presented on a scion-vintage basis. Means presented in each column (within a scion) having the same letters are not significantly different at p ≤ 0.05 (Fisher LSD). Tannins are presented in catechin equivalents (CE).

    Files in this Data Supplement:

    • Supplemental Data
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Rootstock Effects on Deficit-Irrigated Winegrapes in a Dry Climate: Grape and Wine Composition
James F. Harbertson, Markus Keller
Am J Enol Vitic.  2012  63: 40-48  ; DOI: 10.5344/ajev.2011.11079
James F. Harbertson
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  • For correspondence: jfharbertson@wsu.edu
Markus Keller
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Rootstock Effects on Deficit-Irrigated Winegrapes in a Dry Climate: Grape and Wine Composition
James F. Harbertson, Markus Keller
Am J Enol Vitic.  2012  63: 40-48  ; DOI: 10.5344/ajev.2011.11079
James F. Harbertson
  • Find this author on Google Scholar
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  • Search for this author on this site
  • For correspondence: jfharbertson@wsu.edu
Markus Keller
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