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Studies on table grape germplasm grown in Northern Greece. II. Seedlessness, berry and must characteristics

机译：对希腊北部生长的食用葡萄种质的研究。二。无核，浆果和必须特性

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摘要

From 1991 to 1993 nine quantitative and qualitative characteristics of the grape herry and its must were evaluated using local and introduced table grape cultivars of the grapevine collection of the Greek Gene Bank. The data indicate a distinct variation in the grape germplasm in all characters and demonstrate the usefulness of the genetic material as a donor of important genes for grapevine improvement. Principal Component Analysis (PCA) produced 2 factors representing 68.1% of the total variation.PC_1, explaining 43.6% of the total variance, is highly correlated with berry size parameters and characteristics of the berry structure. By Cluster Analysis the assessed cultivars were separated into distinct groups; while seedlessness, was associated with small berry detachment force from the pedicel, late maturity was combined with high acid and low sugar content and a large number of seeds per berry was accompanied by low sugar content.
机译：从1991年到1993年，使用希腊基因库葡萄品种的本地和引入的鲜食葡萄品种评估了葡萄品种的9个数量和质量特征。数据表明葡萄种质在所有特征上都有明显的变化，并证明遗传物质作为重要的葡萄改良基因的供体有用。主成分分析（PCA）产生2个因子，占总变异的68.1％.PC_1解释了总变异的43.6％，与浆果大小参数和浆果结构特征高度相关。通过聚类分析，将评估的品种分为不同的组。无籽与浆果从花梗上脱落的力较小有关，晚熟则与高酸和低糖含量结合在一起，每个浆果大量的种子伴随着低糖含量。

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