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首页> 外文期刊>American journal of enology & viticulture >Responses of Fruit Uniformity to Deficit Irrigation and Cluster Thinning in Commercial Winegrape Production
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Responses of Fruit Uniformity to Deficit Irrigation and Cluster Thinning in Commercial Winegrape Production

机译：酿酒葡萄生产中果实均匀度对亏缺灌溉和疏果的响应

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摘要

Fruit uniformity is generally regarded as an essential quality parameter in winegrape production. Deficit irrigation and cluster thinning are popular techniques to improve fruit quality, but there is little empirical information on how these practices influence fruit uniformity in the field. Deficit irrigation and targeted cluster thinning treatments were imposed in a commercial Cabernet Sauvignon vineyard in Dunnigan Hills, California, for three consecutive years. Fruit uniformity measures at three levels (blocks, vines, and clusters) were evaluated using variance components analysis and ANOVA on absolute residuals (Levene's test). Regardless of the irrigation treatment, cluster-to-cluster variation within vines was the primary source of fruit variability each season. In general, postveraison irrigation deficits decreased cluster-to-cluster uniformity for Brix and fruit anthocyanin content. While the decrease in anthocyanin content uniformity was due to unevenness of fruit anthocyanin synthesis/loss, the decrease in Brix uniformity was due to unevenness in fruit shriveling. Cluster thinning increased Brix uniformity at veraison, but there was no effect at harvest on fruit composition and berry size uniformity. Brix uniformity was not correlated to crop load, pruning weight, or the pruning weight/crop load ratio, but an increase in Brix uniformity did occur as fruit matured.
机译：水果均匀度通常被认为是酿酒葡萄生产中必不可少的质量参数。亏缺灌溉和疏果疏植是提高果实品质的流行技术，但是关于这些做法如何影响田间果实均匀性的经验信息很少。连续三年在加利福尼亚州邓尼根山（Dunnigan Hills）的商业赤霞珠（Cabernet Sauvignon）葡萄园中进行了亏缺灌溉和有针对性的疏果处理。使用方差成分分析和绝对残差的方差分析（Levene's test）评估了三个级别（块，藤和丛集）的水果均匀度测量。无论采用何种灌溉方式，每个季节葡萄藤中簇间的差异都是造成果实变异的主要原因。总的来说，Veraison灌溉不足降低了糖度和水果花色苷含量的簇对簇均匀性。虽然花色苷含量均匀性的降低是由于水果花色苷合成/损失的不均匀性引起的，但是白利糖度均匀性的降低是由于水果切成薄片的不均匀性引起的。疏果丛集增加了糖度的均匀性，但收获时对果实组成和浆果大小的均匀性没有影响。糖度均匀度与农作物负荷，修剪重量或修剪重量/作物负荷比无关，但是随着果实成熟，糖度均匀度确实增加了。

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  • 来源
    《American journal of enology & viticulture》 |2014年第3期|354-362|共9页
  • 作者

    Arturo Calderon-Orellana; Luca Mercenaro; Kenneth A. Shackel; Neil Willits; Mark A. Matthews;

  • 作者单位

    Department of Viticulture and Enology, University of California, Davis, CA 95616,Department of Plant Sciences, University of California, Davis, CA 95616,Department of Engineering and Soils, Faculty of Agricultural Sciences, University of Chile, PO Box 8820808, Santiago, Chile;

    Dipartimento di Agraria, University of Sassari, Sassari, Sardegna 7100, Italy;

    Department of Plant Sciences, University of California, Davis, CA 95616;

    Department of Statistics, University of California, Davis, CA 95616;

    Department of Viticulture and Enology, University of California, Davis, CA 95616;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fruit uniformity; variability; deficit irrigation; cluster thinning; grapevine;

    机译：水果均匀度;变化性;亏水灌溉;集群稀疏葡萄藤;

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