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    Alterations in Chromatic Color Characteristics and Phenolic Compounds of ‘Early Cardinal’ Grape (V. vinifera L.) as affected by Various Concentrations of Foliar Abscisic Acid and Melatonin Treatments
    (Springer Science and Business Media Deutschland GmbH, 2022) Kök, D.
    There has recently been a revival interest in use of distinct foliar treatments for obtaining uniform skin coloration of some table grape varieties. Poor coloration of grape skin in early ripening red table grape growing is one of the major problems that grape growers may run across. In order to cope with these difficulties in uneven skin coloration in table grape varieties, different foliar treatments such as abscisic acid and melatonin may be utilized. Grape skin color is one of the major quality factors, providing remarkable contributions to market values of table grapes and is found out by assessing anthocyanin content or color characteristics. In present research, it was benefited from various concentrations of foliar abscisic acid (S-ABA) and melatonin (Mt), including control, S?ABA 300 mgL?1, S?ABA 400 mgL?1, S?ABA 500 mgL?1, Mt 300?µM, Mt 400?µM and Mt 500?µM and CIELAB color system was used for quantifying skin color of berries. Study results showed that abscisic acid treatments were more effective than melatonin treatments on grape yield and quality characteristics and respectively, treatments of S?ABA 500 mgL?1, S?ABA 400 mgL?1, S?ABA 300 mgL?1, Mt 500?µM, Mt 400?µM, Mt 300?µM resulted in darker red skin color and higher total phenolic compounds content in ‘Early Cardinal’ grape variety. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Deutschland, ein Teil von Springer Nature.
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    Utilizing molecular marker-assisted selection to identify seedless grapevines from the genetic resources of Ganos Mountain grapevines
    (International Society for Horticultural Science, 2025) Sahin, N.; Bahar, E.; Korkutal, I.; Kök, D.
    The characteristics of fruit, such as seedlessness, rely on traits that require a considerable period of time to be observed by traditional breeding methods. Breeders can utilize molecular methods to ascertain the presence of seedlessness traits within the genetic repertoire of plants. This study was conducted on genetic materials collected from Ganos Mountain in Thrace Region in Turkey. A total of 43 genotypes were assessed for seedlessness characteristics using molecular markers in the study. A total of three molecular markers were employed to screen for four bands that are indicative of seedlessness. It was found that 20 out of 43 genotypes exhibited homozygote or heterozygote patterns for those four bands. Out of the total, ten had one band, seven had a pair of bands, and three had all four bands. Nevertheless, a total of four bands were not present in 23 out of 43 genotypes. In order to conduct additional research on breeding programs for the development of novel seedless grapevine cultivars, a total of 20 genotypes with homozygous or heterozygous traits were chosen as genetic resources for the selection process. © 2025 International Society for Horticultural Science. All rights reserved.