Browsing by Author "Alp, Sevket"

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Bioactive Content of Rose Hips of Different Wildly Grown Rosa Dumalis Genotypes
(Univ Agr Sci & veterinary Med Cluj-napoca, 2016) Alp, Sevket; Ercisli, Sezai; Jurikova, Tunde; Cakir, Ozlem; Gozlekci, Sadiye
A rose hip is the fruit of a rose plant and mostly belongs to Rosa canina and Rosa dumalis. These species are genuine found as wild in natural conditions, while in some countries are cultivated for their hips that are picked and used in a wide variety of preparations. Because they contain a variety of antioxidants, carotenoids, flavonoids, polyphenols, leucoanthocyanins and catechins, rose hips are considered to be a good cancer preventative. The Rosa genus has been the focus of many recent studies due to its potential benefit effects on treatment and prevention of several diseases. However, there are few in vitro studies concerning its composition and antioxidant capacity. The aim of the present study was to determine bioactive content, including ascorbic acid, total phenolics, total flavonoids, total carotenoids and antioxidant activity of Rosa dumalis genotypes growing wild in Erzurum province located eastern Anatolia. The results revealed that fruits of Rosa dumalis different genotypes were rich rich in terms of vitamin C, which ranged from 402 to 511 mg/100 g fresh weight base. The total phenolic content varied from 297 to 403 mg/100 g fresh weight. The genotype `E-09' had the highest total flavonoids content(229 mg quercetin equivalent/100 g fresh weight) and the lowest value was attributed to genotype `E-04' with 143 mg/ quercetin equivalent/100 g fresh weight. The antioxidant activity of the genotypes was between 12.9-28.6 mu g Trolox/ml samples. The results revealed that there was enough diversity among Rosa dumalis genotypes for bioactive content and promising genotypes, with high bioactive content, were determined, which can become study material for future breeding activities.
Detection of Volatile Compounds of Hyacinth Flowers (Hyacinthus Orientalis L.) From Turkey
(Publ House Bulgarian Acad Sci, 2022) Zarifikhosroshahi, Mozhgan; Ergun, Zeynep; Alp, Sevket; Ozturk, Gulsah Yasa
Hyacinth (Hyacinthus orientalis L.) is one of the most beloved ornamental plants with fragrant flowers. As one of the important bulbous plants, hyacinth is used as a cut flower, potted flower, and garden flower. Due to their unique aroma, hyacinth flowers are used in perfumery especially in France whose per-fume industry is well-known in the world. In this study, Headspace Solid Phase Micro Extraction (HS-SPME) GC/MS (Gas Chromatography/Mass Spectrom-etry) technique was used for the analysis of volatile compounds of flower sam-ples. A total of 28 volatile compounds were identified in the fresh flowers of hyacinths. Phenylethyl alcohol, benzyl acetate, a-pinene, and furfural were the major aromas accounting for hyacinth fragrance.
Determination of Phenolic Compounds, Antioxidant Capacity and Organic Acids Contents of Prunus Domestica L., Prunus Cerasifera Ehrh. and Prunus Spinosa L. Fruits by Hplc
(Akademiai Kiado Rt, 2017) Celik, Ferit; Gundogdu, Muttalip; Alp, Sevket; Muradoglu, Ferhad; Ercisli, Sezai; Gecer, Mustafa Kenan; Canan, Ihsan
The important role of fruits in human health and nutrition has been better understood with the recent studies on biochemical contents of fruits having antioxidant properties. Being one of the similar studies, in this study, total antioxidant capacity (TAC), phenolic compound, organic acid, and vitamin C contents of three plum species (Prunus domestica L., Prunus cerasifera Ehrh., and Prunus spinosa L.) grown in Van locality (Turkey) were identified, and the correlation between the measured values was investigated. Phenolic compound, organic acid, and vitamin C contents were determined by high-performance liquid chromatography (HPLC) method. Analysis of phenolic compound indicated that chlorogenic acid was the predominant phenolic compound, and the highest value was measured in P. spinosa L. as 12.985 mg kg(-1). Malic acid was the predominant organic acids and the highest value was measured in P. spinosa L. as 1.245 g 100 g(-1). The highest TAC and vitamin C contents were also measured in P. spinosa L. as 1.021 mmol TE kg(-1) and 25.492 mg 100 g(-1), respectively. P. spinosa L. was found to be superior to the other two species with respect to antioxidant capacity and other biochemical contents. A significant (P <= 0.01) and positive correlation was reported between antioxidant capacity and vitamin C content.
Effect of Temperature on Germination Biology in Centaurea Species
(Academic Journals, 2009) Turkoglu, Nalan; Alp, Sevket; Cig, Arzu
The temperature requirement is important factor for adaptation to an ecology of any plant species. Plant seeds growing in the places with high altitutes are excepted to well develop at lower temperatures. In addition, temperature highly determines when seeds will germinate under field conditions. With different flower colors and appearence, Centaurea is an annual, biennial and perennial plant genus, alternatively used for culture plants in landscape architecture works. Centaurea virgata growing at 1750 altitude were germinated at different temperatures. Their germination rate and their percentage of germination were investigated and the best germination temperature assessed. In this study, seeds from roadsides and fields of Centaurea balsamita, Centaurea iberica and C. virgata growing at 1750 altitute were germinated at different temperatures. Their germination speed and germination percentage were investigated and the best germination temperature was assessed. As a result, the best germination percentage and speed was C. balsamita at 15 degrees C.
The Effects of Humic Acid Application on The Nutrient Contents and Heavy Metals in Organs of Marigold (Tagetes Erecta L.)
(Parlar Scientific Publications (p S P), 2017) Sonmez, Ferit; Alp, Sevket; Yasar, Ozlem
This study investigated the effects of humic acid doses applied directly to the soil (control, 10, 20, 40 kg da(-1)) wherein yellow and orange tagates species were grown. The effect of humic acid on the concentrations of macro elements, micro elements and heavy metals in stalk, leave and flower were determined. At the end of the study, it was observed that applying humic acid had a significant effect of 0.1% on the concentrations of N, P, K, Mg, Na, Fe, Zn, Cu, Mn, Cd, Ni, and Pb. Additionally, there were significant differences seen in the nutritional elements content in plant organs, with N, K, Ca, Mg, Na, Fe, Zn, Cu, Mn, Cd, Ni, and Pb at a percentage of 0.1% and P at a percentage of 1%. It was observed that there was a significant difference of 0.1% in regards to the nutrient content of the elements K, Na, Zn, Cu, and Pb. There were no observable significant differences in the amount of the other elements. To conclude, it was determined that applying humic acid had a significant effect on the element contents of different tagates species as well as the nutritional element and heavy metal contents of plant species and their organs.
Enhancing Genetic Diversity in Pelargonium: Insights From Crossbreeding in the Gene Pool
(Peerj inc, 2024) Karaguzel, Ozgul; Kahraman, M. Ugur; Alp, Sevket
This study aimed to enrich the Pelargonium gene pool through crosses and assess genetic variation among 56 genotypes from five Pelargonium species. Seventeen morphological descriptors were used, and NTSYS-pc software was employed to define genetic relationships, and a UPGMA-generated dendrogram reflected these relationships. Moreover, principal component analysis (PCA) was performed to determine which parameter was more effective in explaining variation. Results showed wide variation in genetic similarity rates, with the most similar genotypes being P. zonale 'c1' and a hybrid of P. zonale 'c1' x P. zonale 'c2' (90% similarity). According to the dendrogram results, it was observed that the genotypes were distributed in six clusters. In contrast, the most distant genotypes were P. zonale 'c11' and a hybrid of P. zonale 'c10' x P. zonale 'c11' (0.04% similarity). Hybrids from the female parent P. x hortorum 'c1' exhibited unique placement in the dendrogram. In the crossing combinations with this genotype, the individuals obtained in terms of flower type, flower color, flower size, bud size, early flowering, and leaf size characters showed different characteristics from the parents. Surprising outcomes in flower types, colors, and shapes contributed to gene pool enrichment, promising increased breeding variation success. The study holds practical implications for commercial breeding and serves as a valuable guide for future research endeavors.
Established Forms of Fritillaria Imperialis L. -A Naturally Growing Species in Turkey
(Pakistan Botanical Soc, 2009) Alp, Sevket; Arslan, Neset; Koyuncu, Mehmet
Turkey is a rich Country in terms of geophytes. Fritillaria genus is a part of this natural wealth with its 39 species that grow naturally. The most popular of these is Fritillaria imperialis L. Naturally, Fritillaria imperialis L., spreads on a wide area. This plant is found from Anatolia to Iran, Iraq, Afghanistan, Pakistan, Kashmir, and high in the Himalayan Mountains. The bulbs of this plant were taken from Anatolia to Europe and then to Australia by the French botanist Carolus Clusius (1525-1609) in 1583. Even though in the past new varieties were developed on the basis of the exported bulbs in Europe, no special breeding programs were carried out. However, ill nature the species shows variation. The work presented in this paper, includes the results of observations made during the efflorescence period of the plant in its natural habitats. Significant variations were observed with respect to those characteristics mentioned.
Iapt Chromosome Data 35
(Wiley, 2021) Marhold, Karol; Kucera, Jaromir; Alencar, Juliana; Alp, Sevket; Alves, Lania I. F.; Andronov, Evgeny E.; Zolotov, Dmitry V.
Landscape Analysis and Regain Functionality of Gulistan Garden in the Historic Van Castle
(Health & Environment Assoc, 2020) Asur, Feran; Alp, Sevket
Located along the city shores of Van Lake in Turkey, the city of Van has hosted many civilizations, and historic and archaeological wealth and heritage. The landscape and environmental restoration project, which covers an area of approximately 5.000 m(2) in the northeast of Van Castle supported by Van Governorship, was put into practice in 2006 under the name of "Giilistan Garden". The Giilistan Garden became a recreation area of local and foreign tourists visiting the castle and the old town until 2010. Although the garden is located in the first-degree archaeological site, it has lost its quality landscape image characteristic under negative environmental effects today due to lacking maintenance and repair works. The study aimed to reveal the cultural importance of landscape functionality for the city in today's historical sites by comparing the first years and the current status of the Giilistan Garden in terms of its visual landscape quality in the case of Van city. In the study, the landscape design project of Giilistan Garden was examined, the equipment elements, activity area, plant, and structural assets were taken into consideration, basic features in terms of quantity have been revealed. The first construction and current status visual landscape value were determined. Based on the analyses, two basic suggestions were developed for regaining the functionality of the area and the recovery of the visual value due to the low visual landscape quality and lost quality and maintain the sustainability of its landscape.
Tyrosinase and Cholinesterase Inhibitory Potential and Flavonoid Characterization of Viola Odorata L. (Sweet Violet)
(Wiley, 2015) Orhan, Ilkay Erdogan; Senol, Fatma Sezer; Erdem, Sinem Aslan; Tatli, I. Irem; Kartal, Murat; Alp, Sevket
Inhibitory potential of the dichloromethane, ethyl acetate, ethanol, and aqueous extracts of Viola odorata L. (VO) was investigated against tyrosinase (TYR) and cholinesterases by microplate assays. The antioxidant activity was tested using six in vitro assays. Only the ethanol extract inhibited TYR (80.23 +/- 0.87% at 100 mu gmL(-1)), whereas none of them were able to inhibit cholinesterases. The extracts were more able to scavenge NO radical (31.98 +/- 0.53-56.68 +/- 1.10%) than other radicals tested, and displayed low to moderate activity in the rest of the assays. HPLC analysis revealed that the aqueous extract of VO contained a substantial amount of vitexin (18.81 +/- 0.047mgg(-1) extract), while the ethanol extract also possessed rutin (1.31 +/- 0.013mgg(-1) extract) and vitexin (4.65 +/- 0.103mgg(-1) extract). Furthermore, three flavonoids (rutin, isovitexin, and kaempferol-6-glucoside) were isolated from the ethanol extract. This is the first report on TYR inhibitory activity of VO as well as presence of vitexin and isovitexin in this species. Copyright (c) 2015 John Wiley & Sons, Ltd.