PT  - JOURNAL ARTICLE
AU  - Preiner, Darko
AU  - Kontić, Jasminka Karoglan
AU  - Šimon, Silvio
AU  - Marković, Zvjezdana
AU  - Stupić, Domagoj
AU  - Maletić, Edi
TI  - Intravarietal Agronomic Variability in Croatian Native <em>Vitis vinifera</em> L. Cultivar Grk with Female Flower and Seedless Berries
AID  - 10.5344/ajev.2012.11121
DP  - 2012 Jun 01
TA  - American Journal of Enology and Viticulture
PG  - 291--295
VI  - 63
IP  - 2
4099  - http://www.ajevonline.org/content/63/2/291.short
4100  - http://www.ajevonline.org/content/63/2/291.full
SO  - Am. J. Enol. Vitic.2012 Jun 01; 63
AB  - The Croatian native, Vitis vinifera L. 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 (~3.5 g) and undersized seedless (~0.7 g), both ripe at harvest. This study investigated the intravarietal variability of 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 free volatile terpenes. These results indicate that it is possible to select clones with a higher proportion of seedless berries, which can then be used to improve the wine quality of Grk.