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Yazar "Balta, Mehmet Fikret" seçeneğine göre listele

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    Akçadağ (Malatya) Yöresinde Yetişen Alıç Genetik Kaynaklarının Şeker İçerikleri
    (2022) Balta, Mehmet Fikret; Karakaya, Orhan; Yarılgaç, Tarık; Balta, Fikri; Uzun, Serkan
    Amaç: Bu çalışmada Akçadağ (Malatya) yöresinde yetişen alıç genetik kaynaklarının şeker içeriklerinin belirlenmesi amaçlanmıştır. Materyal ve Yöntem: Çalışmada 5 alıç türüne ait 15 genotip incelenmiştir. İncelenen genotiplerde glikoz, fruktoz, sukroz ve toplam şeker içerikleri belirlenmiştir. Araştırma Bulguları: İncelenen özellikler bakımından çalışılan türler ve genotipler arasında geniş bir varyasyon belirlenmiştir. Türler bazında, Crataegus pontica glikoz, fruktoz ve toplam şeker içerikleri (sırasıyla, 11.0 g 100 g-1, 12.7 g 100 g-1 ve 26.1 g 100 g-1), Crataegus aronia ise sukroz içeriği (3.7 g 100 g-1) bakımından öne çıkmıştır. Genotiplere bağlı olarak, en yüksek glikoz, fruktoz ve toplam şeker içerikleri (sırasıyla, 21.0, 23.6 ve 45.0 g 100 g-1) H-1 genotipinde, en yüksek sukroz içeriği (3.7 g 100 g-1) ise H-15 genotipinde belirlenmiştir. Temel bileşen analiz sonuçlarına göre, oluşan ilk iki bileşen toplam varyasyonun %99.8’ini açıklamıştır. 1. bileşen glikoz, fruktoz ve toplam şeker içerikleri ile ilişkili iken, 2. bileşen ise sukroz içeriği ile ilişkili bulunmuştur. Sonuç: İncelenen alıç genetik kaynaklarının şeker içerikleri bakımından önemli bir potansiyele sahip olduğu ve bu yönüyle ıslah çalışmalarında genetik materyal olarak kullanılabileceği düşünülmektedir.
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    Effect of Cluster Drop Intensity on Nut Traits, Biochemical Properties, and Fatty Acids Composition in the 'cakildak' Hazelnut Cultivar
    (Springer, 2022) Karakaya, Orhan; Yaman, İzzet; Kırkaya, Hüseyin; Uzun, Serkan; Kaya, Tuncay; Balta, Mehmet Fikret
    This study was conducted to determine the effect of cluster drop intensity (CDI) on nut traits, biochemical properties, and fatty acids composition in the 'cakildak' hazelnut cultivar. Many nut traits, biochemical properties, and fatty acids composition were affected by CDI. Depending on the increase in CDI, nut weight, kernel weight, nut size, kernel size, total phenolic, total flavonoids, and antioxidant activity increased. Nut weight, kernel weight, and kernel ratio were determined from 2.00 (low) to 2.31 g (high), 1.09 (low and intermediate) to 1.25 g (high), and 53.34 (intermediate) to 54.27 (low), respectively. The highest total phenolics, total flavonoids, and antioxidant activity (3675 mg per 100 g, 37.3 mg per 100 g, and 5.14 mmol per 100 g, respectively) were detected in high CDI, while the lowest (1947 mg per 100 g, 17.5 mg per 100 g, and 2.01 mmol per 100 g, respectively) were determined in low CDI. The effects of CDI on fatty acids composition were different. Oleic acid ranged from 82.46 (low) to 84.06% (intermediate), while linoleic acid was determined between 6.77 (high) and 8.78% (low). According to principal component analysis, many of the traits investigated were associated with high CDI, except nut length, kernel length, oleic acid, and linoleic acid. In conclusion, it was determined that bioactive compounds and fatty acids composition are significantly affected depending on CDI. Also, the findings of this study showed the potential consequences of the coming hazards of global warming on hazelnuts and will be helpful for future studies.
  • Küçük Resim Yok
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    Effect of Plant Density on Nut Traits, Nut Yield, Cluster Distribution and Chemical Components in Cakıldak (Corylus avellana L.) Hazelnut Cultivar
    (Springer, 2024) Balta, Fikri; Yilmaz, Muharrem; Karakaya, Orhan; Caliskan, Kazim; Yarilgac, Tarik; Bostan, Saim Zeki; Balta, Mehmet Fikret
    The research was carried out during the 2015-2017 in an organic certified hazelnut (cv. 'Cak & imath;ldak') orchard established at 6 x 5 m spacing with 'ocak' system (multi-stemmed bush) in Samsun, Turkiye. The aim was to determine effects of plant density on nut traits, nut yield, cluster distribution, kernel oil content, fatty acid composition, total phenolics content (TPC), total flavonoids content (TFC) and total antioxidant activity (TAA) in 'Cak & imath;ldak' hazelnut cultivar. Plant density (D) in orchard was arranged as 5 (D5), 6 (D6), 7 (D7), 8 (D8), 10 (D10), 12 (D12) and 14 (D14) plants per ocak, respectively. The highest nut yield per hectare was achieved with 2344 +/- 129.1 kg in D14, and the highest nut yield per plant was determined with 534 +/- 2.0 g in D8. Depending on the plant density, nut weight, kernel weight and kernel ratio ranged from 2.06 +/- 0.01 g (D10) to 2.26 +/- 0.02 g (D8), 1.18 +/- 0.02 g (D10) to 1.27 +/- 0.01 g (D8) and 55.10 +/- 0.55% (D14) to 57.47 +/- 0.40% (D7), respectively. The number of nuts per cluster also varied between 2.24 +/- 0.03 and 2.41 +/- 0.08. 'Cak & imath;ldak' kernels contained oil between 58.0 +/- 0.02% (D14) and 63.5 +/- 0.40% (D8). TPC was determined between 9.10 +/- 0.64 and 13.09 +/- 0.76 mg GAE g(-1). TFC varied from 8.62 +/- 0.06 to 13.17 +/- 0.32 mg QE 100 g(-1). TAA was measured between 39.05 +/- 1.24 and 70.27 +/- 2.13 mmol TE kg(-1) by FRAP test and between 25.54 +/- 1.49 and 37.37 +/- 0.12 mmol TE kg(-1) by DPPH assay. Results indicated that nut traits, nut yield, oil content, fatty acids, TPC, TFC and TAA were affected by plant density in Cak & imath;ldak cultivar.
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    Evaluation of the diversity among the service tree (Cormus domestica L. Spach) accessions grown in the Seben (Bolu, Türkiye) region based on fruit traits and bioactive compounds
    (Springer, 2025) Balta, Mehmet Fikret; Kirkaya, Hueseyin; Balta, Fikri; Uzun, Serkan; Karakaya, Orhan
    The study was conducted to evaluate the diversity based on fruit traits and biochemical composition of the service tree accessions growing naturally in the Western Black Sea region of T & uuml;rkiye. A wide variation was determined regarding the traits investigated among service tree accessions. In the service tree accessions, fruit weight varied between 4.90 and 10.33 g, and fruit size ranged from 19.72 to 27.49 mm. Vitamin C was determined between 4.86 and 76.40 mg 100 g-1. Total phenolics, total flavonoids, and antioxidant activity (according to DPPH and FRAP assays) ranged from 82.4 to 1749.1 mg 100 g-1, 34.8 to 497.1 mg 100 g-1, 1.42 to 20.98 mmol kg-1, and 7.68 to 61.28 mmol kg-1, respectively. Catechin, caffeic, epicatechin, and rutin were determined as major individual phenolics. Principle component analysis revealed that traits investigated could effectively explain the variability among service tree accessions. The first three components explained 56.6% of the total variation. These findings highlight the rich genetic diversity of local service tree accessions and their potential for use in future breeding and conservation programs.
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    Fatsa (Ordu) Yöresinden Verim Dalgalanması Az Olan Palaz Fındık Klonlarının Verim ve Meyve Özellikleri
    (2022) Karakaya, Orhan; Balta, Mehmet Fikret; Uzun, Serkan; Balta, Fikri
    Çalışma, Fatsa yöresinde yetiştirilen Palaz fındık populasyonu içerisinde verim dalgalanması eğilimi az olan klonları tespit etmek için 2015, 2016, 2017 ve 2018 yıllarında yürütülmüştür. Palaz klonları 4 yıl süreyle incelenmiş ve verim dalgalanması eğilimleri belirlenmiştir. İncelenen 145 klondan 4’ünde verim dalgalanması eğiliminin az olduğu tespit edilmiştir. Seçilen klonlarda bitki verimi 152.2 g (P-3)-490.2 g (P-2), kabuklu meyve ağırlığı 1.90 g (P-2)-2.05 g (P-1), iç ağırlığı 1.06 g (P-2)-1.10 g (P-1), iç oranı %53.56 (P-1)- %55.64 (P-2), kabuk kalınlığı 0.93 mm (P-4)-1.17 mm (P-2), kabuklu meyve iriliği 16.67 mm (P-2)-16.97 mm (P-1), iç iriliği 12.95 mm (P-4)-13.15 mm (P-2), sağlam iç oranı %85.98 (P-4)-%89.83 (P-1) ve kusurlu iç oranı %6.97 (P-3)-%11.73 (P-2) aralığında değişim göstermiştir. Temel bileşen analizleri neticesinde oluşan ilk iki bileşen toplam varyasyonun %80.57’sini açıklamıştır. 1. ve 2. bileşen birçok özellikle ilişkili bulunmuştur. Kusurlu iç oranı (-0.99) ve toplam çotanak sayısı (-0.98) 1. bileşen, kabuklu meyve eni (-0.89) ise 2. bileşen üzerine en etkili özellikler olmuştur. Sonuç olarak, verim dalgalanması bakımından öne çıkan P-2 klonunun fındık ıslah programlarında ebeveyn olarak kullanılabileceği değerlendirilmektedir.
  • Küçük Resim Yok
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    Genetic diversity and marker-trait associations among Çakıldak hazelnut (Corylus avellana L.) clones in the North Eastern Anatolia of Türkiye based on morphological and molecular markers
    (Springer, 2025) Karakaya, Orhan; Balta, Mehmet Fikret; Uzun, Aydin; Balta, Fikri; Uzun, Serkan
    The study was conducted to determine the yield, nut traits, genetic diversity, and marker-trait associations in promising and phenotypically different & Ccedil;ak & imath;ldak hazelnut clones selected from Fatsa (Ordu) region, Eastern Black Sea Region. In clones, nut weight, kernel weight, and kernel ratio ranged from 1.48 to 1.97 g, 0.82-1.12 g, and 49.6-58.2%, respectively. Nut yield per plant varied between 174.5 and 543.5 g with a yield efficiency ranging from 1.91 to 13.79 g cm-2. In the molecular analysis, 12 ISSR (Inter Simple Sequence Repeat) and 3 SRAP (Sequence-related Amplified Polymorphism) primers generated 95 bands, of which 85 were polymorphic. The polymorphism rate was in the range of 50-100%. The similarity index ranged from 0.59 to 0.96. & Ccedil;ak & imath;ldak clones were grouped into three clusters in STRUCTURE similar to the UPGMA (unweighted pair group method with arithmetic mean). In the association mapping by ISSR/SRAP markers, 65 loci were related to the traits. Some crucial yield and nut traits important for hazelnut breeding were associated with pleiotropic loci [(GAA)6-600 and (AG)7YC-400, respectively], which could help breeders to select superior individuals in terms of yield and nut traits. & Ccedil;-1, & Ccedil;-6, and & Ccedil;-9 clones were genetically different and superior in terms of yield and nut traits, can be used as decent genetic materials for developing new cultivars in hazelnut breeding programs. These results may also contribute to the conservation and maintenance of hazelnut genetic resources, and the future hazelnut breeding efforts.
  • Yükleniyor...
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    Phytochemical Variation of Native Apple Germplasm Resources from the Eastern Black Sea Region, Turkey
    (Springer, 2022) Balta, Mehmet Fikret; Karakaya, Orhan; Kurt, Haydar; Yılmaz, Muharrem; Uzun, Serkan; Balta, Fikri
    In order to contribute more to human health, revealing the nutritional potential of fruit germplasm sources that have rich phytochemical compounds has gained importance today and has become one of the breeding objectives of various fruit species. Many nutritional components of wild apples have been considered as useful sources for apple breeding efforts, but studies on the phytochemical compounds of native apple genetic resources grown in local areas are limited. This study was carried out to investigate the phytochemical compounds of 19 native apple genotypes grown in Giresun in the eastern Black Sea region of Turkey and to compare them with those of three commercial varieties ('Granny Smith', 'Fuji', and 'Royal Gala'). The total phenolic contents of the genotypes ranged from 141.7 mg per 100 g (Yesilsut) to 1036.8 mg per 100 g (Cipir). Antioxidant activity was determined to be between 505.6 mu mol per 100 g (Ahmet) and 5041.8 mu mol per 100 g (Cipir). The total flavonoids ranged between 11.2 mg per 100 g (Beyaz) and 95.3 mg per 100 g (Maden). Uzun had the highest content of malic acid (15.33 g l(-1)) and tartaric acid (1.008 g l(-1)). The highest values for succinic acid and oxalic acid were detected in Cipir (1.192 g l(-1) and 0.484 g l(-1), respectively). Most of the native apple genotypes had higher levels of phytochemical compounds than those of standard apple cultivars. Principal component analysis showed that the phytochemical components could effectively explain the variability among the native apple genotypes, which exhibited wide variation in terms of phytochemical compounds. Most genotypes contained higher levels of phytochemical compounds than standard apple cultivars. The data imply that the native apple genotypes are an important source of phytochemical compounds and that native apple genotypes with higher contents of bioactive compounds can be used as genetic material for apple breeding programs. They might contribute to the development of new apple cultivars with enhanced health benefits.

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