TY - JOUR T1 - Intravarietal Agronomic Variability in Croatian Native <em>Vitis vinifera</em> L. Cultivar Grk with Female Flower and Seedless Berries JF - American Journal of Enology and Viticulture JO - Am. J. Enol. Vitic. DO - 10.5344/ajev.2012.11121 SP - ajev.2012.11121 AU - Darko Preiner AU - Jasminka Karoglan Kontić AU - Silvio Šimon AU - Zvjezdana Marković AU - Domagoj Stupić AU - Edi Maletić Y1 - 2012/03/20 UR - http://www.ajevonline.org/content/early/2012/03/09/ajev.2012.11121.abstract N2 - The Croatian native, Vitis vinifera L. grapevine cv. Grk, is one of only a few wine cultivars with a female flower, resulting in two types of berries in the cluster: fully developed seeded berries (~3.5g) and undersized (~0.7g) seedless berries, both ripe at harvest. This study investigated the intravarietal variability of cv. Grk and the impact of the different proportion of seedless berries on grape yield and quality of Grk clones. Significant differences in cluster proportions of seedless berries among Grk clone candidates were determined. A high positive correlation was found between the seedless berry proportion and single berry weight, must tartaric acid content and FVT. These results indicate that it is possible to select clones with a higher proportion of seedless berries in cluster, which can then be used to improve the wine quality of Grk cv. ER -