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    Determination of Fruit Quality and Fatty Acid Composition of Turkish Walnut (Juglans regia) Cultivars and Genotypes Grown in Subtropical Climate of Eastern Mediterranean Region
    (Friends Science Publ, 2012) Bayazit, Safder; Sumbul, Ahmet
    Turkey has considerable walnut populations in its several different ecological regions. Five cultivars ('Sebin', 'Sen 1', 'Tokat 1', 'Kaplan 86' & 'KR 2') and three genotypes ('Malatya 1', '77H1' & '65/4') selected form different regions were investigated for their fruit quality characteristics and fatty acid compositions in the eastern Mediterranean region of Turkey. The results indicated that the fruit weight ranged from 9.21 g ('Tokat 1') to 22.2 g ('Kaplan 86'), kernel weight ranged from 5.39 g ('Sebin') to 9.79 g ('Malatya 1') and kernel percentage ranged from 36.69 ('Kaplan 86') to 62.84% ('Tokat 1'). Fatty acid profile was a significant parameter distinguishing the walnut cultivars and genotypes. Palmitic acid values of these genotypes were ranged from 6.98 to 8.77%, oleic acid ranged from 19.33 to 36.76%, linoleic acid ranged from 41.55 to 59.89%, linolenic acid ranged from 8.44 to 11.0%, steraic acid ranged from 3.22 to 4.99. Oleic acid content of genotype kernels with dark color (C & h values are low) were the lowest but the linolenic acid contents of them were the highest. 65/4', 'KR 2' and 'Sebin' genotypes were found to be very promising for fruit quality traits and fatty acid profiles in the eastern Mediterranean region of Turkey. (C) 2012 Friends Science Publishers
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    Fruit Quality and Phytochemical Attributes of Some Apricot (Prunus armeniaca L.) Cultivars as Affected by Genotypes and Seasons
    (Univ Agr Sci & Veterinary Med Cluj-Napoca, 2012) Caliskan, Oguzhan; Bayazit, Safder; Sumbul, Ahmet
    This study was conducted over two growing seasons (2010 and 2011) to evaluate effects on fruit quality and phytochemical properties of new Turkish cultivars, hybrid between Irano-Caucasian- and European eco-geographic groups, and some important apricot cultivars in the eastern Mediterranean region of Turkey. Fruit quality characteristics, sensory traits, and phytochemical parameters were investigated. The data showed that considerable variation existed in fruit quality and phytochemical properties of Turkish, and foreign apricot cultivars based on genotypes and growing seasons. The new hybrid cultivar 'Cagataybey' contained the highest total soluble solid content (14.6%), rich total phenolic (93.9 mg GAE 100g(-1) fw), and total antioxidant capacity levels (9.8 mmol Fe2+ kg(-1) fw), and >50% of blush color on the fruit peels among the cultivars. The fructose and sucrose values showed positively significant correlations with total phenolics (r = 0.55 and r = 0.69, at p<0.05, respectively). The authors had estimated that the data will be useful for breeding studies to improve fruit quality and nutritional contents of apricot cultivars.
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    Morpho-genetic characterization of fig (Ficus carica var. rupestris (Hausskn.) Browicz) genotypes to be used as rootstock
    (Springer, 2024) Yildiz, Ercan; Aglar, Erdal; Sumbul, Ahmet; Yaman, Mehmet; Caliskan, Oguzhan; Popescu, Gheorghe Cristian; Popescu, Monica
    With its enormous genetic pool, Turkiye is the homeland of the fig and many plant species. The common fig species in the country's natural population are Ficus carica var. caprificus (male figs), Ficus carica var. domestica (female figs; edible figs), and Ficus carica var. rupestris. In this study, the morphological and molecular characterization of 42 genotypes, including those obtained by selection from the Ficus carica var. rupestris (Hausskn.) Browicz population, which is naturally spread in a limited area in Tunceli province, was performed. This study evaluated the qualitative and quantitative characteristics of 23 fig genotypes. These results showed that tree growth habit, lateral shoot formation, apical dominancy, and leaf length characteristics were highly discriminant variables for phenotypic description in wild fig genotypes. The genetic relationship between the genotypes was demonstrated with 12 SRAP and 9 ISSR primers. As a result of the study, it was determined that the genetic similarity values ranged between 0.52 and 0.94. It was determined that the first five essential components (PCA) contributed 20.87%, 13.21%, 10.66%, 9.58%, and 7.11% of the total variation, respectively, and their cumulative rate corresponded to 61.43% of the total variation. Very detailed results on the genetic variation in the fig population in the region were obtained by morphological features and molecular methods. The seven genotypes selected were propagated to determine their potential for dwarf rootstocks. The results of the present study may provide significant leads for further research on this subject. The potential of dwarf rootstocks in figs can be an essential tool for modern fruit growing.