Browsing by Author "Çelik, F."

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Agro Morphological Properties of Plums (Prunus Domestica L.) Genotypes Grown in Van Region
(Centenary University, 2018) Çelik, F.; Kuba, G.
This study was conducted in the years 2010 and 2011 to determine plum genotypes naturally grown in Van region and to identify biological diversity in the region. Phenological, pomological and morphological properties of available plum genotypes were assessed and a total of 45 genotypes were monitored for two years. Among the investigated genotypes, 10 were selected as promising plum genotypes. Budburst dates of promising genotypes varied between 5-26 April, initiation of flowering dates varied between 30 April-14 May; full-bloom dates varied between 03-17 May; end of flowering dates varied between 11-24 May; and harvest dates varied between 01 August-10 September. Fruit weights of promising genotypes varied between 8.66-25.59 g; fruit widths between 22.29-31.22 mm; fruit lengths between 22.98-35.86 mm; fruit heights between 23.16-33.32 mm; seed weights between 0.59-1.45 g; seed widths between 9.56-19.23 mm; seed lengths between 11.91-20.97 mm; fruit volumes between 12.00-32.00 cm³; fruit densities between 0.80-1.53 g cm -3 fruit flesh/seed ratios between 11.50-23.09%; fruit juice titratable acidity values between 0.89-2.62%; pH values between 3.75-4.08; total soluble solids contents (TSSC) between Brix° 10.5-15.5; vitamin C contents between 9.84-29.80 mg 100g -1 , tree canopy heights between 2.30-6.00 m; and canopy widths between 2.30-7.40 m. © 2018, Centenary University. All rights reserved.
Comparison of Kumquat (Fortunella Spp.) Volatiles Using Various Spme Fibres Followed by Gc/Ms Techniques and Determination of the Total Phenol and Antioxidant Compounds
(International Society for Horticultural Science, 2024) Polat, Y.; Oğuz, I.; Eksi, E.; Cimen, B.; Kafkas, N.E.; Çelik, F.
Kumquat is the smallest citrus fruit with an edible peel. It is a member of the Fortunella genus in the Rutaceae family and is native to south-eastern China. After understanding the health benefits of kumquat fruits, farmers started their plantations in Turkey. Therefore, this study was aimed to determine the aromatic profiles of volatile compounds in the peel and juice of kumquat by SPME headspace technique for CAR/PDMS/DVB, PDMS followed by GC/MS (gas chromatography-mass spectrometry) method and determine the biochemical characteristics (namely total phenolic and antioxidant compounds) of kumquat. The volatile compounds are known to contain different biochemical substances that can be classified as aldehydes, alcohols, esters, terpenic compounds, and other compounds. Kumquat juice is primarily composed of terpenoids, and its main terpene compound is d-limonene. The headspace technique led to the identification of 62 compounds, among which d-limonene was the most abundant. Moreover, a total of 5 different aldehydes, 8 esters, 15 alcohols, 2 ketones, and 32 terpenes were identified and quantified in the peel and juice of kumquats. Also, as a result of this study, the total amount of phenols determined in kumquat peel was higher than the total amount of phenols in fruit juice. On the other hand, the total antioxidant capacity determined in the juice of kumquats was higher than that in the kumquat peel. © 2024 International Society for Horticultural Science. All rights reserved.
Determination of Chlorophyll Amounts and Stoma Densities of Grape Cultivars Grown in Hizan (Bitlis) Conditions
(Centenary University, 2020) Doğan, A.; Uyak, C.; Akçay, A.; Keskin, N.; Şensoy, R.İ.G.; Çelik, F.; Özrenk, K.
In order to reveal effects of cultivar, methods used (nail polish and transparented leaf method), picking positions of the leaves (shade / sun) and sampling from different parts of the leaf surface (tip, middle, bottom) on stoma density and sizes and determine total chlorophyll, chlorophyll a, chlorophyll b, carotenoid amounts and SPAD values of the cultivars, this research was carried out on 28 local grape cultivars grown in Hizan province in 2017. In the study, it was determined that the effect of the cultivar, method used and picking position of the leaf on the stoma density was important, but the effect of sampling from different parts of the leaf surface on the stoma density was insignificant. Similarly, it was determined that the effect of the cultivar, method used and on the stoma sizes was important, but the effect of picking position of the leaf and sampling from different parts of the leaf surface on the stoma sizes was insignificant. It was concluded that the transparented leaf method should be preferred in making better stomatal observation in the hairy and rough grapevine leaves. In the study, it was determined that the effect of the cultivar on total chlorophyll, chlorophyll a, chlorophyll b and carotenoid amounts and SPAD values was important and there were important differences between cultivars in terms of these values. It was observed that the SPAD values of the leaves in the sun were higher than the leaves in the shade. © 2020, Centenary University. All rights reserved.
The Effects of Different Warm Stratification Periods on the Seed Germination of Some Rosa Taxa
(Academic Journals, 2009) Alp, Ş.; Çelik, F.; Türkoǧlu, N.; Karagöz, S.
In this study, the effects of different warm stratification periods on the seed germination of some Rosa species such as Rosa heckellana ssp. vanheurckiana, Rosa canina, Rosa pulverelanta and Rosa dumalis naturally grown in the Van region were investigated. In 2007, seeds of these species were kept at 25° C warm stratification for 10, 11 and 12 weeks, and then transferred to 5° C for cold stratification till the initiation of germination. Germination response to treatments of R. heckellana ssp. vanheurckiana seeds was different compared to the other species. The seeds of R. heckellana ssp. vanheurckiana germinated in a short time (when they kept in warm stratification followed by cold stratification between 1 - 3 weeks). The seeds of the other species required 5 months of cold stratification after warm stratification to overcome seed dormancy. The overall germination percentage were 18.80% in R. canina, 13.80% in R. pulverelanta and 13.53% in R. dumalis at 25° C of warm stratification followed by 5° C cold stratification. We determined that for these three taxa, the most appropriate method of stratification was 11 week warm stratification followed by cold stratification. © 2009 Academic Journals.
Evaluation Possibilities of Different Parts of Pomegranate, a Historical Fruit and Its Effects on Health
(EDP Sciences, 2024) Polat, Y.; Çelik, F.; Kafkas, N.E.
Today, with the faster development of science and technology, people have started to pay more attention to healthy living and consuming foods that are beneficial for human health. In this context, the value given to fruit species has become increasingly important and the importance of plants whose seeds are consumed has increased, as well as colourful fruits and vegetables. Pomegranate is a fruit grown in many countries in the world, especially in the Mediterranean climate, and its economic value has been increasing in recent years. This fruit has gained great nutritional importance not only because of its flavour but also because it contains many antioxidant substances and phenolic compounds that are beneficial to human health. There are nearly fifty pomegranate varieties registered in our country. These pomegranate varieties range from sweet to sour, from small-in size to large in size, and from hard-seeded to soft-seeded in terms of skin colour and fruit colour. In recent years, the use of pomegranate parts such as peel, seeds, and flowers in cosmetics and food industry has become widespread and studies on the antioxidant properties of different parts of pomegranate have attracted interest. The aim of this review is to investigate the health effects of pomegranate fruit, different parts of pomegranate, and products made from pomegranate. © The Authors, published by EDP Sciences.
Potential Status of Persimmon (Diospyrus Kaki L.) in Türkiye and Its Impact on Human Health
(EDP Sciences, 2024) Polat, Y.; Kazan, M.; Çelik, F.; Kafkas, N.E.
Anatolia is the gene center of many fruit species grown in the world and is also very rich in terms of fruit species and varieties. Diospyrus kaki L., known as persimmon, is one of these fruit species. Considering Türkiye's ecological conditions, persimmon has a great potential for production. In recent studies, the potential health effects of persimmon have been cited as an important factor, increasing the popularity and consumption of persimmon. In addition, persimmon has become the center of attention in recent years due to the attractive orange color of the fruit, its distinctive taste and structure, rich in antioxidants and phenolic compounds. In this review study, it was aimed to increase awareness of the production potential of persimmon grown in Turkiye by revealing its production potential, and to shed light on decision-makers in future production planning by providing information in terms of economic importance and health. © The Authors, published by EDP Sciences.
Profile of Organic Acid and Vitamin C in Fruits of Some Pomegranate Genotypes
(Centenary University, 2019) Çelik, F.; Gündoğdu, M.; Zenginbal, H.
Pomegranate fruit is an important fruit species in human nutrition due to its rich biochemical content. In this study, organic acids (malic, citric, tartaric, succinic, oxalic and fumaric acid) and vitamin C contents of fruits of pomegranate genotypes grown in Çukurca (Hakkari) district were determined. Correlations between these biochemical contents were examined by basic component analysis and the statistical distributions of pomegranate genotypes in terms of bioactive contents were determined. The variation of in genotypes in terms of organic acid and vitamin C contents is explained as 44.73 % with two main components. When the organic acid contents in the study were evaluated, it was determined that the dominant acid was citric acid except for one genotype, followed by malic acid, fumaric acid, succinic acid, oxalic acid, and tartaric acid. Oxalic acid, malic acid, citric acid, succinic acid, fumaric acid, and tartaric acid contents of pomegranate fruit juices were determined to range from 0.02 to 0.59 g l-1 from 1.01 to 2.84 g l-1, from 1.92 to 7.84 g l-1, from 0.06 to 0.28 g l-1, 0.13 to 0.68 g l-1, 0.03 to 0.10 g l-1, respectively. In the study, 30HAK02 genotype (30.84 mg l-1) was found to contain higher vitamin C than other genotypes. © 2019, Centenary University. All rights reserved.
Some Physical and Chemical Properties of Cold-Resistant Walnut Genotypes (Juglans Regia L.) From Van Lake Basin
(Centenary University, 2016) Başer, S.; Kazankaya, A.; Doğan, A.; Yaviç, A.; Çelik, F.
One of the most important climatic factors is spring late frost that adversely affects walnut growing. Particularly the green shoot heads damaged from cold weather, when the temperature decrease -2-3°C, after starting of walnut vegetation. Turkey’s walnut production and yield were dramatically decreased during the late spring frost in 2013. 83 genotypes were marked in Van Lake zone during 2013. The present study carried out during 2014-2015 and the late vegetates walnut populations were investigated. 25 genotypes were selected based on the seed weights of the walnuts. The seed weights were 11.46-16.25 g, the shell weights were 4.46-8.27 g, the inner ratios were 45.79-61.08 %, the protein ratios were 12.55-21.34 %, total oil ratios were 63.99-69.34 %, humidity ratios were 2.09-3.87% and the ash ratios were 1.33-2.50 %. Additionally, The macro and micro elemental analysis of the seeds were carried out and % 2.44 N, 297.5 mg P, 442.6 mg K, 331.9 mg Mg, 186.8 mg Ca, 169.1 mg S, 1.88 mg Na, 2.58 mg Fe, 2.86 mg Mn, 2.29 mg Zn ve 1.34 mg Cu values were observed. © 2016, Centenary University. All rights reserved.