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• MakaleYalnız künye2026/r/bayburt/16071
  Evaluation of Phenotypic Traits and Essential Oil Content in Wild-Grown Achillea biebersteinii Populations in Northeastern Türkiye

  Coban, Furkan; Gül, Volkan; Çakır, Ahmet

  Achillea biebersteinii Afan., a medicinal and aromatic plant widely distributed in Türkiye, is valued for its essential oil content and bioactive compounds. This study aimed to investigate the phenotypic variation, yield performance, and essential oil content of A. biebersteinii populations collected from ten different locations in northeastern Türkiye. A total of six morphological and agronomic traits plant height (PH), inflorescence diameter (ID), stem diameter (SD), number of flowering branches (NFB), dry herbage yield (DHY), and dry flower yield (DFY) alongside essential oil content (EO), were evaluated. ANOVA results revealed statistically significant differences among locations for PH, DHY, and NFB, indicating strong environmental or genetic influences. In contrast, EO content showed no significant variation across locations, suggesting greater genetic stability. Correlation analysis indicated a strong positive association between NFB and DHY, while EO content was negatively correlated with PH and SD. Principal Component Analysis further clarified trait associations and revealed distinct groupings among locations, with L9 and L10 showing superior yield performance and L3 standing out for its high EO content. These findings highlight the substantial phenotypic and chemotypic diversity of A. biebersteinii in northeastern Türkiye and underscore the importance of location specific selection in breeding and conservation programs. The identification of high-yielding and high-quality populations provides a valuable resource for sustainable utilization of this species in medicinal and aromatic plant sectors.

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• MakaleAçık Erişim2026Scopus SJRQ2/r/bayburt/12694
  Nutrient composition of some edible wild plants with high nutritional value in Eastern Türkiye

  Bakacak, Mustafa; Gul, Volkan

  The demand for edible wild plants for their health and high nutritional content has increased dramatically worldwide. Although some wild plant species are eaten as vegetables, information on their nutritional content is limited. This study provides interesting, useful data (moisture, dry matter, ash, organic matter, protein, and mineral content) on the nutritional value of ten wild plant species traditionally consumed in the eastern Anatolia region of Türkiye. These species are Arum rupicola var. virescens, Allium vineale, Rumex crispus, Satureja hortensis, Scorzonera mollis subsp. szowitzii, Eremurus spectabilis, Urtica dioica, Gundelia glabra, Rheum ribes, and Ferula orientalis, According to the results obtained; dry matter ratio varied between 6.03–10.77%, organic matter ratio varied between 80.63–93.65%, protein ratio varied between 9.94–35.71%, P content varied between 112.38–806.54 mg/100 g, K content varied between 1597.46–7980.06 mg/100 g, Mg content varied between 214.64–704.84 mg/100 g, Ca content varied between 142.6.2–1157.53 mg/100 g and Fe content varied between 14.20–460.32 mg/100 g. Urtica dioica gave the best results in terms of protein, P, Mg, Ca, Na, and Cu, while Scorzonera mollis subsp. szowitzii gave the best results in terms of Mn and Cu. These new findings suggest that the obtained plants can be considered a valuable source of nutrients in human nutrition and will allow their inclusion in food nutrient databases.

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• MakaleYalnız künye2026Scopus SJRQ2/r/bayburt/11275
  The Effect of Sugar Beet (Beta vulgaris L.) Varieties Grown Under Semi-Arid Conditions in Turkey’s Eastern Anatolia Region on Yield and Quality

  Bagcı, Ikram; Gul, Volkan; Sefaoglu, Firat; Lan, Yuzhou; Coban, Furkan

  Global climate change, which is increasingly evident today, leads to significant fluctuations in the yield and quality parameters of sugar beet varieties, particularly due to its direct impact on semi-arid regions. Therefore, the adaptation capacity of varieties especially in the semi-arid areas of eastern regions and their responses to drought and temperature stress are of critical importance. This study was conducted during the 2022–2023 growing seasons to evaluate the yield and quality performance of ten sugar beet varieties (Seranada, Lider, Mohican, Terronova, Aranka, Turbata, Bernache, Setenil, Tisserin, and Chevalier) within a continental agro-ecological zone characterized by high altitude and a semi-arid climate. The results revealed significant differences among the varieties in terms of all examined traits. The highest root yield was obtained from Chevalier (95.30 ton/ha) and Mohican (94.17 ton/ha), while Tisserin produced the lowest (71.34 ton/ha). In terms of sugar yield, Terronova ranked highest (16.18 ton/ha), whereas Tisserin (12.44 ton/ha) and Setenil (12.34 ton/ha) showed the lowest performances. The Lider variety recorded the highest sugar content (18.22%), indicating its potential as a quality-oriented genotype. Overall, Mohican and Terronova demonstrated the most favorable responses under semi-arid conditions. These findings underscore the importance of regional variety testing for identifying high-yielding and high-quality sugar beet genotypes, especially in environments affected by altitude, climate variability, and soil characteristics.

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  AtıfScopus1·WoS1

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• MakaleAçık Erişim2026Scopus SJRQ2/r/bayburt/11016
  Yield Performance and Oil Composition of Safflower (Carthamus Tinctorius L.) Cultivars Under Semi-Arid Conditions in Northern Türkiye

  Cosar, Ibrahim; Gul, Volkan; Sefaoglu, Firat

  The shortage of vegetable oil in Turkey is escalating daily. Increasing the production of safflower oil seeds, which are particularly adapted to semi-arid climatic conditions, could reduce dependence on foreign sources for vegetable oil. In this study, the yield and quality characteristics of eight safflower varieties were evaluated under semi-arid ecological conditions in northern Turkey. Field trials were conducted over two years (2020–2021) with three replications, following the ‘’Randomized Block Experiment Design’’. Significant differences were observed between the varieties in terms of the examined parameters. The highest average grain yield (1730.9 kg ha⁻¹) was obtained from the Göktürk variety, the highest oil content (30.7%) from the Balcı variety, and the highest oil yield (470.1 kg ha⁻¹) from the Olas variety. The highest oleic acid content (50.14% ± 3.9) was obtained from the Koc variety, and the highest stearic acid content (2.68% ± 0.1) was obtained from the Hasankendi variety. The linoleic acid (77.71% ± 0.4) and palmitic acid (5.92% ± 0.1) ratios were found to be higher in the Dincer variety compared to other varieties. The research highlights the importance of genotypes in asparagus. It demonstrates that the Göktürk and Olas varieties stand out in terms of yield and yield components in semi-arid ecosystems. These results provide variety-specific information for regional adaptation in safflower breeding and under challenging climatic conditions.

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• MakaleAçık Erişim2026Scopus SJRQ3/r/bayburt/10930
  YIELD AND QUALITY PERFORMANCE OF DIFFERENT ROW SPACINGS ON CORIANDER GENOTYPES IN SEMI-ARID CONDITIONS

  Kalkan, Zeynep; Ozturk, Erdogan; Sefaoglu, Firat; Gul, Volkan; Polat, Taskin; Toktay, Zehra; Mosber, Goltay

  Increased plant population causes more in-row stress in plants, potentially reducing yield. Narrow row spacing can reduce stress by increasing plant-to-plant spacing within a row. Therefore, it is important to standardize plant row spacing according to various characteristics to achieve higher yield and quality. The purpose of the 2014–2015 study was to ascertain the impact of varying sowing distances (20, 30, 40, and 50 cm) between rows on the yield and agronomic traits of coriander genotypes (Gamze, Kudret, Telci). Four replications of the field research were set up using a "Randomized Blocks Experimental Design." The results indicated that genotype, row spacing, and the genotype x row spacing interaction had a statistically significant impact on seed output, but the years had no discernible influence on seed yield. The production of seed and oil decreased as row spacing increased, while oil content increased. With 20–40 cm row spacing and 1683.4–1846.5 kg da-1, the genotypes of Kudret and Telci produced the maximum seed production. Although the decrease in the number of branches and umbrellas in narrow row spacing had a negative effect on seed yield, the increase in the number of seeds per umbrella and the number of plants per unit area led to an increase in seed yield. When evaluated based on genotypes, although the Kudret and Telci genotypes gave the best results in terms of seed yield, the Kudret genotype gave the best results regarding essential oil ratio and essential oil yield.

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• MakaleAçık Erişim2026Scopus SJRQ2/r/bayburt/10926
  Enhancing salt stress tolerance in sugar beet via TiO2 nanoparticles: a machine learning approach

  Engin, Mustafa Alptekin; Sefaoglu, Firat; Gul, Volkan; Aras, Selim; Kaynar, Dilara

  In this study, the biostimulant potential of titanium dioxide (TiO2) nanoparticles was investigated to enhance sugar beet (Beta vulgaris L.) seed response to salt stress. Controlled applications were conducted at different NaCl (0–200 mM) and TiO2 (0–1,800 ppm) levels, and eight key morphological and physiological parameters were evaluated. In the first stage, the individual and interactive effects of the factors were examined using a two-way analysis of variance. Then, various machine learning-based regression models, primarily the Gradient Boosting algorithm, were used to numerically model plant responses. Based on the high-accuracy models, optimal application combinations were determined for each parameter and visualized using graphical surface analyses. Additionally, the most suitable overall TiO2 dosage for each salt level was calculated using a multi-criteria scoring system that assigned equal weight to all parameters. The results revealed that TiO2 exerts a regulatory and protective effect on plants against salt stress, with this effect varying with both dosage level and environmental stress severity. The study demonstrates that nanotechnological initiatives can be integrated into data-driven agricultural strategies to optimize stress management.

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  AtıfScopus1·WoS1·OpenAlex1

  İncele
• MakaleAçık Erişim2025Scopus SJRQ2/r/bayburt/11880
  Performance of organic manures alone or combined with chemical fertilizers in increasing growth, yield, and nutritional quality of potatoes in the Eastern part of Türkiye

  Kurt, Gunes; Ozturk, Erdogan; Sefaoglu, Fırat; Gul, Volkan; Toktay, Zehra; Mosber, Goltay

  This study aimed to determine the effects of different types of fertilizers (organic and inorganic fertilizers) on plant growth, yield, and yield components of potatoes grown in the high-altitude plateau of eastern Türkiye in 2017 and 2019. In the experiment, single or combined doses of nitrogen (N; as ammonium sulfate) and phosphorus (P; as triple super phosphate) as inorganic fertilizers and leonardite (L) and vermicompost (V) fertilizers as organic fertilizers were used. In both years, different fertilizer treatments significantly affected plant growth, yield, and yield components. Tuber yield per hill (941.0 g), marketable tuber yield (32.71 t ha−1), total tuber yield (37.84 t ha−1), specific gravity (1. 077 g cm−3), chip productivity (35.9%), starch (13.03%) and protein (11.0%) ratios increased when N fertilizer was used in combination with vermicompost or leonardite. N fertilizer combined with V or L fertilizer increased tuber yield under harsh continental climates, short growth periods, and high altitudes.

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  AtıfScopus3·WoS2·OpenAlex3

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• MakaleAçık Erişim2024/r/bayburt/16456
  The Effect of Pre-Applied Titanium Dioxide Nanoparticles on Germination in Carthamus tinctorius L. Varieties

  Dınler, Burcu Seçkın; Sefaoğlu, Fırat; Gül, Volkan; Çetinkaya, Hatice; Koç, Fatma Nur

  In the present study, to promote sustainable nano-farming, the apparent effects of different concentrations (0, 100, 200, 300, 400, 500 ppm) of titanium dioxide nanoparticle (TiO2NPs) solutions on the germination percentage, index and duration of seeds belonging to Balcı, Dincer, Hasankendi, Koc, Olas, and Zirkon safflower varieties were investigated. Moreover, scanning electron microscopy (SEM) was employed to analyze TiO2NPs in germinated safflower varieties. Germination performance was TiO2NPs concentration and variety depended. It was determined that the seed samples displayed different responses to TiO2NPs concentrations; germination percentages were between 20.0±1.15 and 82.9±0.44%, germination durations were between 2.01±0.021 to 3.82±0.017 days, and germination indices were between 9.97±0.606 and 38.97±0.959. While the highest germination percentage (82.9±0.44%) was obtained from Dincer variety with 100 ppm TiO2NP pre-application, the lowest germination percentage (20.0±1.15% and 20.0±1.92%) was obtained from Balcı and Hasan Kendi varieties with 100 and 300 ppm TiO2NP pre-application. According to this result, although the highest germination percentage based on variety was obtained from the Dincer variety, the Balcı variety with the lowest germination percentage provided the most significant increase in the 200 ppm TiO2NPs application dose compared to the control. According to the germination percentage, it can be said that the most effective TiO2NPs application dose in Safflower varieties is 200 ppm. Further research on nanoparticles is needed to determine both the economical doses of TiO2NP pre-application and its uptake by the plant.

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• MakaleAçık Erişim2024Scopus SJRQ2/r/bayburt/13045
  The Effect of Different Doses of Salt Stress on Germination and Emergence in Cannabis (Cannabis sativa L.) Seed Treated with Pre-Salicylic Acid

  Gul, Volkan; Sefaoglu, Fırat; Cetinkaya, Hatice; Dinler, Burcu Seckin

  It is known that salinity stress, one of the abiotic stress factors, significantly limits the germination, growth, development, and crop yield of plants. Therefore, this study was conducted to evaluate the effects of salinity (control, 50, 100 ve 150 mM) on seed germination and the effect of salicylic acid (control, 0.25, 0.50, 0.75 ve 1.00 mM) on seed germination to improve salt tolerance in cannabis seeds. The physiological characteristics of the plant, such as germination percentage, germination duration, germination index, radicle length, plumule length, wet radicle weight, dry radicle weight, wet plumule weight, and dry plumule weight, were analyzed. Depending on the salinity application dose, it was observed that there was a significant decrease in the germination parameters of cannabis seeds compared to the control. It was observed that salicylic acid treatments under salinity stress positively affected all the characters examined and reduced germination arrest due to increasing concentration levels. Although it is recommended to prepare seeds with 0.5 mM salicylic acid pre-application dose against salt stress of the cannabis plant,it is essential to expand the studies on its transfer to practice. As a result, salicylic acid will provide positive results that can be transferred to practice by increasing the resistance of cannabis plants against salinity, especially in agricultural soils with salt problems, as it will be more sensitive to pests and diseases.

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  AtıfScopus4·WoS3·OpenAlex3

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• MakaleAçık Erişim2024Scopus SJRQ3/r/bayburt/12955
  THE EFFECT OF DIFFERENT DOSES OF LIQUID VERMICOMPOST APPLICATION ON YIELD AND YIELD COMPONENTS OF SOME POTATO (SOLANUM TUBEROSUM L.) VARIETIES

  Gul, Volkan; Gidik, Betul

  This is one of the early studies to produce healthy, yielding, and high-quality tubers from the potatoes grown in Bayburt, an organic agriculture basin, using liquid vermicompost that can supplement organic fertilizers. The purpose of this study was to examine the effect of liquid vermicompost applications (0, 3, 6, 9, and 12 L ha-1), which can supplement the stable manure used as bottom fertilizer, on yield and yield components of potato (Solanum tuberosum L.) varieties (Agria and Lady Olympia). The research was designed in random blocks with three replications. As a result of the study, it was found that the tuber yield was within the range of 20.24-30.40 tons’ ha-1, the protein ratio was within the range of 1.53-2.51%, and the starch ratio was within the range of 11.98%-15.99%. The liquid vermicompost doses applied to the potato varieties created significant differences in all three parameters. Due to the positive effect of the Agria (3.40 tons/da) variety on the yield and vegetative development of potatoes, It was concluded that 9 L liquid vermicompost application per decare would be beneficial.

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  AtıfScopus1

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