Browsing by Author "Gündoğdu, M."

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Effect of Different Hormone Applications on Antioxidant Enzyme Activities of Strawberry Leaves
(Centenary University, 2019) Gündoğdu, M.; Kuru Berk, S.; Geçer, M.K.; Kipçak, S.; Çakmakci, Ö.
This study was carried out to determine the effect of the application of methyl jasmonate (MeJa) and gibberellic acid (GA3) on the antioxidant enzyme activity in 5 different strawberry cultivars (Albion, Aromas, Honeoye, Seascape, Sweet Ann). The application of 50 ppm and 100ppm GA3 and 0.25, 0.50, and 1.00 mM doses MeJA was applied as foliar spray. Catalase (CAT), superoxide dismutase (SOD) and malondialdehyde MDA levels were determined in the collected leaf. Samples sweet Ann cultivar had the highest CAT and SOD activity while Honeoye cultivar had the lowest values. CAT activity was decreased in Seascape and Aromas cultivars, and it was observed that CAT activity variability according to application and dose in other cultivars. The amount of SOD has increased with each application in the Albion and Seascape cultivars. In contrast to CAT and SOD activity, MDA concentration was determined the highest in Honeoye and the lowest in Sweet Ann. The present study, it was determined that the hormone (GA3, MeJa) applications affected the enzyme and MDA contents depending on the cultivars and the doses of the hormones. © 2019, Centenary University. All rights reserved.
Intercourse of Arbuscular Mycorrhizal Fungus and Putrescine Treatments on Agro Morphological and Biochemical Properties of Strawberry Festival Cv
(Springer, 2025) Kuru Berk, S.; Gündoğdu, M.; Demirer Durak, E.
Putrescine (Put) and arbuscular mycorrhizal fungus (AMF) play an effective role in plant growth and development. However, although studies on the use of putrescine in field conditions are limited, there are no studies on its use with AMF. In this research, the effects of putrescine and AMF applications on yield, plant and fruit development, fruit biochemicals, flowering, and harvest were investigated in strawberry Festival cultivar. Two doses of putrescine (100 and 150 ppm), two types of AMF, (Funneliformis mosseae/FM and Gigaspora margarita/GM), and their interactions were used. The results show that putrescine affected AMF colonization and mycorrhizal dependence. Especially in F. mosseae species, it was observed that colonization increased with putrescine interactions. Also, highest yield was determined as 346.12 g in G. margarita and 150-ppm Put interaction application. The interaction application of F. mosseae and 150-ppm putrescine had the highest amount of vitamin C with an increase of 78% compared to the control. Again, it was observed that this application had the highest amount of catechin and rutin (5.385 and 1.055 mg 100 g−1, respectively). However, only putrescine applications came to the fore in terms of the development of the crown length of the plant and the sugar content. It was determined that G. margarita applications extended the harvest period in this study. These results showed that the yield, vegetative growth, and fruit biochemical content of strawberry could be increased with the interaction application of F. mosseae and 150-ppm putrescine. All in all, a different perspective has been brought to the use of putrescine and mycorrhiza in agricultural production and its positive effects have been revealed. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
Phenolic Profiles of Currant (Ribes Spp.) Cultivars
(Centenary University, 2017) Okatan, V.; Gündoğdu, M.; Güçlü, S.F.; Çelıkay Özaydin, A.; Çolak, A.M.; Korkmaz, N.; Aşkin, M.A.
The present work aimed the study of rutin, protocatechuic, catechin, p- hydroxy benzoic, chlorogenic, caffeic, kuersetin, luteolin, kamferol, p-coumaric, vanilin and ferulic acids composition in different currant varieties in Turkey. Red and black currant varieties (Goliath, Red Lake, Rovada, Rosenthal, and Booskop Giant) were analyzed for phenolic acids by using reversed-phase high performance liquid chromatography (HPLC). Results showed that p-coumaric acid (1.66-0.04 µg g-1) was the predominant phenolic acid extracted from currant varieties. In addition, other acids, namely rutin (35.41-7.23 µg g-1), Protocatechuic (3.28-2.84 µg g-1), Chlorogenic (65.49-2.38 µg g-1), and kuersetin acids (2.29-1.50 µg g-1) were obtained in extracts from currant fruit. © 2017, Centenary University. All rights reserved.
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.