Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Yildirim, Mustafa(4)
- Bahar, Bilge(2)
- Yildirim, Mehmet(2)
- Yuksel, Ferhat(2)
- Çakmak, Mustafa(2)
- Baltacı, Cemalettin(1)
- Barutçular, Celalettin(1)
- Cakmak, Mustafa(1)
- Deveci, M.(1)
- Gullap, M.K.(1)
- Koç, Müjde(1)
- Lithourgidis, A.(1)
- Merdan, Kurtuluş(1)
- Muharrem Ural(1)
- Sevil Gençer Özyılmaz(1)
- Tunç, Merve Tuğçe(1)
- Yavuz, Busra(1)
- Yavuz, Büşra(1)
- Yildirim, M.(1)
- Yolcu, H.(1)
- Çomakli, Şafak Ertan(1)
Yayınlar
- MakaleAçık Erişim2025Scopus SJRQ4Analysis of factors affecting the import demand for wheat and corn in Türkiye using the Seemingly Unrelated Regression Method; [Türkiye’de buğday ve mısır ithalat talebini etkileyen faktörlerin Görünüşte İlişkisiz Regresyon Yöntemine göre analizi]
Merdan, Kurtuluş; Çomakli, Şafak Ertan
Objective: In this study, it is aimed to analyze the determining factors on the import demand for wheat and corn, which have an important place in Türkiye's grain imports, with the "Apparently Unrelated Regressions" model. Material and Methods: The data set used in this study consists of annual data covering the years 2006-2021. Stata program was used to analyze the data used in the study. Since Stata or Eviews programs do not provide the Standardized Beta (β) coefficient, statistical analyzes were performed using the formula in Microsoft Excel (β=B*SSXi / SSY). Results: Only the one-year delayed value of wheat imports, which is one of the explanatory variables in the wheat import model, was found to be significant, according to the study's findings. In terms of factors influencing corn import demand, similar results were obtained. Only total corn consumption was found to be statistically noteworthy among the explanatory variables in the corn import model. Conclusion: Based on these findings, wheat imports are influenced by changes in wheat imports from a year ago, while corn imports are influenced by changes in total corn consumption. Based on Türkiye's current structure and the findings obtained, it is understood that the country may continue to maintain its position as an importer of wheat and corn in the future.
AtıfScopus1OpenAlex2TR Dizin1
İncele - MakaleAçık Erişim2024Rheological properties of pestil enriched wheat, potato and corn flour using simplex lattice mixture design
Yuksel, Ferhat; Yavuz, Busra; Tunç, Merve Tuğçe
In this study, pestil was made using various concentrations of wheat, corn, and potato flours and the ideal flour combination amounts were determined using the simplex lattice mixture design technique. The apparent viscosity, G' (elastic modulus), G'' (viscous modulus), and tan δ (G''/G') analyses were determined. In all samples, it is seen that viscosity reduces while shear rate increases. This type of behaviour is pseudoplastic behaviour. While the highest apparent viscosity was observed in the 13th sample (12 g/100 g potato flour), the lowest was seen in the 11th sample (12 g/100 g wheat flour). In all samples, the elastic modulus (G') was higher than the viscous modulus (G''). The ANOVA table shows that linear data have a significant (p<0.05) effect on apparent viscosity, G', G'', and tan δ values. In general, formulations using potato flour show higher apparent viscosity values. Also, it is observed that the tan δ, G', G'' and apparent viscosity values increase with the addition of potato flour.
- Yüksek Lisans TeziAçık Erişim2022Farklı ekmeklik buğday unları kullanılarak üretilen Tokat kırmızı biber tarhana örneklerinin fiziksel, kimyasal, fonksiyonel ve mikrobiyolojik özelliklerinin araştırılması
Sevil Gençer Özyılmaz
Bu çalışmada, beş farklı ekmeklik buğday çeşidinden (Altınöz, Candaş, Gökkan, Şahika ve Yakamoz) elde edilen unlardan, spontan kademeli fermantasyon yöntemine dayanarak geleneksel tarhana yapım metodu ile elde üretilen tarhana örneklerine açık havada, hava akımlı etüvde ve vakum altında kurutma yöntemleri uygulanmıştır. Elde edilen tarhanalarda fiziksel, kimyasal, fonksiyonel ve mikrobiyolojik özellikler incelenmiştir. Bu kapsamda, rutubet, kül, protein, yağ, pH, tuz, fitik asit ve mineral içerikleri ile yağ asitleri kompozisyonu, toplam titrasyon asitliği, su tutma kapasitesi, yağ tutma kapasitesi, su aktivitesi, renk analizleri, antioksidan analizleri (DPPH giderme-troloks eşdeğeri, DPPH giderme-askorbik asit eşdeğeri, DPPH inhibisyonu, toplam antioksidan kapasitesi, toplam flavonoid kapasitesi, toplam fenolik kapasitesi, FRAP indirgeme kapasitesi, ABTS, viskozite değerleri ve aktik asit bakterileri incelenmiştir. Elde edilen bulgular; tarhana örneklerine uygulanan kurutma tekniklerinin, bazı antioksidan özellikler (toplam fenolik kapasitesi ve ABTS giderme aktivitesi) hariç, tüm özellikler bakımından önemli farklılıklar gösterdiğini ortaya koymaktadır. Çeşitler ise, su aktivitesi, renk analizleri ve ABTS giderme aktivitesi hariç tüm özellikler bakımından önemli değişimler göstermiştir. Ayrıca, kurutma tekniği×çeşit interaksiyonlarının tüm özellikler yönünden önemli bulunduğu anlaşılmıştır. Açık havada kurutulan tarhanalarda 2.6x103-3.5x104 kob/g laktik asit bakterisi (LAB) belirlenirken; etüvde ve vakum altında kurutma yöntemlerinde LAB'ye rastlanmamıştır. Açık havada kurutma (AHK) metodu, LAB ve antioksidan özellik açısından tüketim için daha uygun bulunmuştur. Ayrıca, enerji maliyetleri düşünüldüğünde; bu yöntem öne çıkmaktadır. Daha yüksek kül, protein, yağ, toplam titrasyon asitliği ve çoğu antioksidan aktiviteleri ile kalsiyum, çinko, bakır ve mangan içerikleri bakımından Gökkan ekmeklik buğday çeşidi, Tokat kırmızı biber ve benzeri tarhanalar için önerilmektedir.
- Yüksek Lisans TeziAçık Erişim2022Yerli ve yabancı bazı kışlık ekmeklik buğday çeşitlerinin erken dönem kuraklık stresine katlanma bakımından değerlendirilmesi
Muharrem Ural
ÖZET Yapılan çalışmada, 10 yerli ve 10 yabancı olmak üzere, 20 kışlık ekmeklik buğday (Triticum aestivum L.) çeşidinin, erken dönemde meydana gelebilecek kuraklık stresine karşı morfo-fizyolojik ve fito-kimyasal özellikleri incelenmiştir. Bu anlamda, %100 tarla kapasitesinde ve %25 tarla kapasitesinde tutularak, laboratuvar ortamında sera koşulları oluşturulmuştur. Çalışmalar, uygulamalar (su stressiz kontrol ve su stresli kurak koşullar) ana parsellere ve çeşitler alt parsellere yerleştirilmek suretiyle, üç tekrarlamalı olarak tesadüf parsellerinde bölünmüş parseller deneme desenine göre yürütülmüştür. Çalışma kapsamında, yaprak en, boy ve en/boy oranı, yaprak klorofil-a, klorofil-b, toplam klorofil ve klorofil-a/b, kök yaş ağırlığı, taç yaş ağırlığı, kök/taç yaş ağırlıklar oranı, ELWR (kesilen yaprak su tutma kapasitesi), MTS (membran kararlılığı), ortam-yaprak sıcaklığı farkı (OYSF), yaprak kül içeriği, yaprak potasyum (K+) içeriği, karotenoid içeriği, prolin ve toplam fonolik bileşik içeriği gibi morfo-fizyolojik ve fito-kimyasal özellikler incelenmiştir. Ayrıca, uygulamaların ve çeşitlerin, çoğu özellikler bakımından; yine uygulama×çeşit interaksiyonlarının bakımından çoğu özelliklerin istatistiksel anlamda değişim gösterdiği belirlenmiştir. Yapılan analizler sonucunda; kuraklık stresi ile birlikte yaprak eni ve boyunda, klorofil-b ve klorofil a/b, kök ve taç yaş ağırlığında, MTS, OYSF, yaprak kül içeriği ve yaprak K+ içeriğinde azalmalar gözlenmiştir. Yaprak en/boy, klorofil-a, toplam klorofil, kök/taç oranı, ELWR, karotenoid, prolin ve toplam fenolik içeriğinde ise artış olduğu saptanmıştır. Sonuç olarak, denemede incelenen özellikler, erken dönemde yaşanabilecek kuraklık veya diğer abiyotik stres çalışmalarında, verime giden yolda birer morfo-fizyolojik ve fitokimyasal ıslah kriteri olarak kullanılmasının yanısıra; gerek genotip sayısı ve gerekse uygulama sayısının arttırılarak tarla denemeleri ve buna benzer sera denemelerinin birlikte yürütülmesi çalışmaların kesinliği ve sağlığı açısından daha yerinde olacaktır. Ayrıca, çalışmada incelenen çeşitlerden Miranda'nın kuraklık stresinde, çoğu özellikler yönünden ıslah çalışmalarında ebeveyn olarak rahatlıkla kullanılabileceği anlaşılmaktadır.
- MakaleYalnız künye2022Scopus SJRQ1Some physicochemical, color, bioactive and sensory properties of a pestil enriched with wheat, corn and potato flours: An optimization study based on simplex lattice mixture design
Yuksel, Ferhat; Yavuz, Büşra; Baltacı, Cemalettin
In this study, a dried fruit roll up (pestil) was produced by using different concentrations of wheat, corn and potato flours. Simplex lattice mixture design technique was performed to determine the best flour mixture levels. The highest Hydroxymethylfurfural (HMF) was observed in the 13th sample with 6.60 mg/kg; and the lowest was in the 4th sample with 1.42 mg/kg. It was observed that the total phenolic content of the samples varied between 783.0 and 2154.8 mg GAE/kg and this variation was significant (p < 0.05). Significant increases in the antioxidant activities (total antioxidant and DPPH) of the samples were also determined in the pestil samples. Generally, sensory properties of the pestil samples significantly decreased by the increase of potato flour in the mixture and corn and wheat flours exhibited similar sensory properties. The optimum flour mixture was determined according to the sensory analyses, and it was determined that the best pestil formulation can be produced by incorporating 4.69 g wheat flour and 7.39 g corn flour per 100 g.
AtıfScopus13WoS14
İncele - MakaleYalnız künye2016Scopus SJRQ2Effects of organic solid cattle manure application on nutritive value of winter cereal forages
Yolcu, H.; Gullap, M.K.; Yildirim, M.; Lithourgidis, A.; Deveci, M.
Nutritive value of winter cereal forages is one of interested subjects of farmers for animal feeding. Field experiments were established in 2007–2008 and 2008–2009 growing seasons in northeast Turkey to investigate the effect of organic solid cattle manure application (0, 10 and 20 Mg ha−1 yr−1) on nutritive value of three annual cereals for forage. The winter cereal forages were: wheat (Triticum aestivum L.), oat (Avena sativa L.) and rye (Secela cereale L.). ADF (acid detergent fiber), NDF (neutral detergent fiber) CP (crude protein), nitrogen, phosphorus, potassium, sulfur, calcium, copper, iron, magnesium, manganese, sodium, zinc and boron (N, P, K, S, Ca, Cu, Fe, Mg, Mn, Na, Zn and B) concentrations were researched in this study. Wheat had the highest CP, N, Ca, Cu, Na and Zn concentration, whereas oat had the lowest ADF and NDF and the highest K, Fe and Mn concentrations. The greatest Mg and P concentrations were determined in rye. Organic solid cattle manure applications had no effect on N and CP contents, but it decreased ADF and NDF contents. However, in most cases it positively affected the P, B, Cu, Fe, Mg and Na concentrations, whereas it decreased K, Ca, Mn and Zn concentrations. The results showed that wheat and oat are more nutritive species than rye in terms of animal feeding and the organic solid cattle manure, in some cases increased the nutritive values of wheat, oat and rye under organic agriculture conditions.
AtıfScopus4WoS6OpenAlex6İncele - MakaleAçık Erişim2014Scopus SJRQ3The Population Vigors of Diallel F4 Offsprings of Six Bread Wheat Genotypes for Grain Yield under Irrigated and Rain-Fed Conditions
Yildirim, Mustafa; Çakmak, Mustafa
Grain yield estimate from early segregating populations is an interesting feature of today's wheat breeding programs, and F-1 populations are generally recommended as the most suitable population by researchers. In the present study, we evaluated the population vigor of diallel F-4 offsprings of six bread wheat genotypes (Sultan, Bezostaya, Suzen, Harmankaya, Altay and Gerek) under irrigated (IR) and rain-fed conditions (RF). The experiment as two sets under IR and RF were established in the field of Anatolian Agricultural Research Institute, Eskisehir. The mean of grain yield (5468 kg ha(-1)) of F-4 populations in RF and IR had been lower than the mean of genotypes (5654 kg ha(-1)). The mean of grain yield of genotypes (7062 kg ha(-1)) under IR was higher than F-4 populations (6703 kg ha(-1)), while genotypes and F-4 populations were nearly similar under RF (4246 kg ha(-1) and 4234 kg ha(-1), respectively). The mid-variety population vigor for grain yield varied from -6.70% (Hrm/Grk) to 8.77% (Bez/Grk) under RF, and from -22.58% (Sltn/Alty) to 10.87% (Bez/Suzen) under IR. There was not positive significance population vigor in F(4)s. According to results under RF and IR, F-4 populations are observed as the most suitable populations for realistically estimation of grain yield performance of populations.
AtıfWoS2İncele - MakaleAçık Erişim2014Scopus SJRQ3The population vigors of diallel F4 offsprings of six bread wheat genotypes for grain yield under irrigated and rain-fed conditions; [Altı ekmeklik buğday genotipinin diallel F4 melez döllerinde sulu ve yağmura dayalı koşullar altında populasyon güçleri]
Yildirim, Mustafa; Çakmak, Mustafa
Grain yield estimate from early segregating populations is an interesting feature of today’s wheat breeding programs, and F1 populations are generally recommended as the most suitable population by researchers. In the present study, we evaluated the population vigor of diallel F4 offsprings of six bread wheat genotypes (Sultan, Bezostaya, Süzen, Harmankaya, Altay and Gerek) under irrigated (IR) and rain-fed conditions (RF). The experiment as two sets under IR and RF were established in the field of Anatolian Agricultural Research Institute, Eskişehir. The mean of grain yield (5468 kg ha-1) of F4 populations in RF and IR had been lower than the mean of genotypes (5654 kg ha-1). The mean of grain yield of genotypes (7062 kg ha-1) under IR was higher than F4 populations (6703 kg ha-1), while genotypes and F4 populations were nearly similar under RF (4246 kg ha-1 and 4234 kg ha-1, respectively). The mid-variety population vigor for grain yield varied from-6.70% (Hrm/Grk) to 8.77% (Bez/Grk) under RF, and from-22.58% (Sltn/Alty) to 10.87% (Bez/Süzen) under IR. There was not positive significance population vigor in F4s. According to results under RF and IR, F4 populations are observed as the most suitable populations for realistically estimation of grain yield performance of populations.
AtıfScopus2OpenAlex3İncele - MakaleYalnız künye2013Scopus SJRQ3The effect of water stress on spikelet position weight variation in wheat
Yildirim, Mustafa
This study was conducted in Eskisehir during the 2004-05 and 2005-06 growing seasons, and aimed to evaluate the response of six bread wheat varieties to rainfed and irrigated conditions in terms of grain yield, heading date, plant height and position weight variation (PWV). Of the six varieties tested, three (Sultan, Yildiz, Bezostaja) are drought-sensitive cultivars and three (Gerek, Altay, Sonmez) are drought-tolerant cultivars. Spikes from each variety were divided into five spikelet groups in order to study the effect of spikelet position upon grain weight (S1, S2, S3, S4 and S5, with S1 the spikelet closest to the base). This study focused on position weight variation (PWV) in order to better understand how 1000-kernel weight is affected by spikelet position under both rainfed and irrigated conditions and thus gains a better understanding of wheat resistance to drought. Linear increases in grain yield, heading date and plant height were observed in response to irrigated conditions, whereas a linear increase in PWV was observed in response to rainfed conditions for both seasons. Grain yield was negatively associated with heading date (r=-0.746). PWV was positively associated with grain yield and negatively associated with heading date (p<0.01; r=0.804 and r=-0.860, respectively). The observed differences in grain weight between spikelet positions have important implications for drought tolerance in wheat and can be used as a new parameter for predicting drought tolerance.
AtıfScopus2WoS2İncele - MakaleYalnız künye2013Scopus SJRQ3Effects of sister line mixtures on grain yield and some quality parameters in wheat
Yildirim, Mustafa; Cakmak, Mustafa
This study examined grain yield and grain quality (protein content, 1000 kernel weight, SDS sedimentation) of 100 wheat plant materials including 4 varieties (Gerek, Aytin, Kutluk and Kirac), 6 sister line mixtures (with each mixture consisting of 15 sister lines per diallel cross) and 90 F7 sister lines (6 crosses x 15 sister lines). In total, 100 different plant materials were used in a 10 x 10 lattice design. Plant material was sown during the 2006- 2007 growing season in two locations in Turkey (Eskisehir and Mahmudiye) with three replications per location. Analysis of variance of the combined locations found significant differences (p≤0.01) between locations and among genotypes for all 4 parameters examined. Grain yield varied significantly (p≤0.01) by block [replication] in Eskisehir and by variety in both Eskisehir and Mahmudiye. Mean grain yields at Eskisehir, Mahmudiye and the combined locations were higher for sister-line mixtures when compared to sister lines and varieties. Mean grain yields of the combined locations varied between 5125 kg ha-1 (GRK/AYT) and 2764 kg ha-1 (GRK/KRC-9). Significant differences (p≤0.05) in SDS sedimentation of plant materials were found at both Eskisehir and Mahmudiye, whereas significant differences (p≤0.05) in 1000 kernel weight and protein composition were found at Eskisehir only. In high-variety vigor, significant difference (p≤0.05) was detected for protein content at AYT/KRC (-6.8) among the sister-line mixtures in the combined locations. These results suggest that a good mixture of sister lines may result in higher grain yields. Further studies are required that look at grain yields among a greater number of sister lines.
- MakaleYalnız künye2010Scopus SJRQ3Responses of some wheat genotypes and their F2 progenies to salinity and heat stress
Yildirim, Mehmet; Bahar, Bilge
Both heat and salinity cause yield decrease in wheat. Grain yield in wheat has increased as a result of breeding efforts for different stress conditions. However, there are still substantial opportunities to improve grain yield by using conventional breeding under stress conditions, like heat and salt stress. The objective of this study was to investigate heat and salt effects on yield and some agronomic traits of four wheat genotypes and their six half F2 diallel cross progenies grown in pots. Significant differences were found among the genotypes for grain yield under both heat stress and non-stress condition. There was a mean reduction in yield of 12.6% due to salt stress. The reduction in biomass was higher than grain yield under salt stress while it was lower at heat stress. Grain yield was positively correlated with spike weight, harvest index, grain numbers per plant and biological yield under non stress (NS), heat stress (HS) and salt stress (SS) conditions. Cultivars Seri 82 and Chil's had high yield among parents under both NS and SS. Chil's and its hybrids showed low reduction in yield due to SS; thus, exhibiting salt tolerance. Also, Chil's was found to be good combiner with high General Combining Ability (GCA) effects for grain yield under SS conditions. 84 CZT04 was the most susceptible cultivar under SS. Significant GCA effects of Genç 99 and 84CZT04 provided positive contribution to grain yield under HS. It was impossible to select both heat and salt tolerant genotype with high yield capacity from the used genotypes. However, heat or salt tolerant genotypes can be improved by selection breeding due to genetic variation among genotypes.
AtıfScopus9WoS7İncele - MakaleAçık Erişim2009Membrane thermal stability at different developmental stages of spring wheat genotypes and their diallel cross populations; [Yazlık buǧday genotipleri ve diallel melez populasyonlarının farklı gelisme dönemlerinde yüksek sıcaklık membran kararlılıǧı]
Yildirim, Mehmet; Bahar, Bilge; Koç, Müjde; Barutçular, Celalettin
Membrane thermal stability (MTS) can be a significant selection criterion for heat stress tolerance. MTS is determined by measuring of electirical conductivity of aquause phase in which leaf tissue exposure to high temperature. This research was conducted to investigate the membrane stability assay measured by two different methods, namely MTS and relative injury (RI). The second objective of this experiment was to determine the effects of different growth stages of four spring wheat parents and their six half F2 diallel cross progenies grown in the field on membrane stability. Measurements were taken at different growth stages (seedling, stem elongation and early milk). The MTS and RI assays gave similar results at the three different growth stages. However, growth stages significantly affected the MTS and RI values of genotypes. Membrane stability parameters of genotypes decreased during the later developmental stages. Specific combining ability effects were superior to general combining ability effect for all measurements, indicating that membrane thermal stability was mediated mainly by non-additive gene actions. Membrane stability of flag leaf at the early milk stage was significantly correlated with grain yield. The parent of Genç 99 and 84ÇZT04 had low yield potential, whereas Chil's and Seri 82 had high yield potential. Grain yield, spike yield and kernel weight of F2 population were found higher than their parents. These results suggest that genetic variation among genotypes for membrane stability can be utilized in wheat breeding in heat-stressed environments.
AtıfScopus24WoS18OpenAlex21İncele