Browsing by Author "Yildiz, Kenan"

Now showing 1 - 5 of 5

Changes of Some Macro- and Micronutrients Accumulations of Strawberries Plants (Fragaria X Ananassa Dutch L.) Under Salt Stress
(Asian Journal of Chemistry, 2009) Yilmaz, Hudai; Yildiz, Kenan; Kina, Arzu; Oguz, H. Ibrahim
In this study, gloria and kabarla strawberry varieties plants are taken for trial at solid medium culture. During the development, Hoaglan solution is added salt (NaCl) doses of 0 (control), 500, 1000,1500 mg L-1. At the end of the trial, all plant parts above the soil level (aerial parts) are used for the determination of macro (N, P, K, Ca, Mg) and micro (Mn, Zn, Cu, Fe, B) elements, At the analysis done, it was determined that both of the varieties are affected from the salt stress and the accumulation levels change according to the salt doses. It was observed that the kabarla variety with the development characteristics is more tolerable to salt stress when compared with the gloria variety. It was observed that the salt applications on kabarla variety caused an increase in the accumulation of N, Ca and Mn and the accumulation of other elements led to a decrease. In the gloria variety, the increasing salt doses led to a decrease in the accumulation of all the elements whereas at the elements Zn, Fe and B in the 500 mg L-1 application which is the lowest water dose, an increase with respect to the control was determined. In the gloria variety, increase of Zn, Fe and B at 500 mg mg L-1 salt dose turned to a decrease again after the increase in the following doses.
The Effect of Covid-19 on Development of Hair and Nail Disorders: a Turkish Multicenter, Controlled Study
(Wiley, 2023) Kutlu, Omer; Demircan, Yuhanize Tas; Yildiz, Kenan; Kalkan, Goknur; Demirseren, Duriye Deniz; An, Isa; Karadag, Ayse Serap
Background A broad spectrum of skin diseases, including hair and nails, can be directly or indirectly triggered by COVID-19. It is aimed to examine the type and frequency of hair and nail disorders after COVID-19 infection. Methods This is a multicenter study conducted on consecutive 2171 post-COVID-19 patients. Patients who developed hair and nail disorders and did not develop hair and nail disorders were recruited as subject and control groups. The type and frequency of hair and nail disorders were examined. Results The rate of the previous admission in hospital due to COVID-19 was statistically significantly more common in patients who developed hair loss after getting infected with COVID-19 (P < 0.001). Telogen effluvium (85%) was the most common hair loss type followed by worsening of androgenetic alopecia (7%) after COVID-19 infection. The mean stress scores during and after getting infected with COVID-19 were 6.88 +/- 2.77 and 3.64 +/- 3.04, respectively, in the hair loss group and were 5.77 +/- 3.18 and 2.81 +/- 2.84, respectively, in the control group (P < 0.001, P < 0.001). The frequency of recurrent COVID-19 was statistically significantly higher in men with severe androgenetic alopecia (Grades 4-7 HNS) (P = 0.012; Odds ratio: 2.931 [1.222-7.027]). The most common nail disorders were leukonychia, onycholysis, Beau's lines, onychomadesis, and onychoschisis, respectively. The symptoms of COVID-19 were statistically significantly more common in patients having nail disorders after getting infected with COVID-19 when compared to the control group (P < 0.05). Conclusion The development of both nail and hair disorders after COVID-19 seems to be related to a history of severe COVID-19.
Effect of Various Development Periods on Accumulation of Some Mineral Elements on the Leaves of Strawberry Cultivars (Fragaria X Ananassa Dutch. L)
(Asian Journal of Chemistry, 2007) Yilmaz, Hudai; Muradoglu, Ferhat; Yildiz, Kenan
An experiment has been set up with Tudla, Muir, Douglas, Rupella, Moraline, Evita, Aiko, Northeastern, Tioga, Elvira and Delmarvel cultivars for mineral accumulations of nitrogen, phosphorus, potassium, calcium, magnesium, manganese, zinc, copper, iron and boron on plants' leaves were analyzed in three different periods which are fruit formation (May 26th), stolon formation (July 13th) and beginning of resting period (September 27th). It was determined that generally mineral elements accumulation change in relation to development periods. In addition, the periodic change in nitrogen, potassium, manganese, zinc, copper and boron minerals were more evident. No clear change was seen in phosphorus and calcium. Despite that changes were seen in iron mineral at the cultivar level, this situation did not present itself in general averages. When every cultivar is analyzed by itself, there were clear differences among cultivars. Every cultivar's mineral element accumulation level has shown variation. Differences among cultivars' averages have been found statistically significant.
Rootstock and Training Effects on Growth and Fruit Quality of Young '0900 Ziraat' Sweet Cherry Trees
(Springer, 2024) Aglar, Erdal; Ozturk, Burhan; Saracoglu, Onur; Long, Lynn Edwards; Yildiz, Kenan; Gun, Sefa; Has, Sirin
The study was conducted to determine the performance of '0900 Ziraat' cultivar grafted on Krymsk 5, Gisela 6 and Piku 1 rootstocks, and the effects of the combinations of these rootstocks with four training systems on yield and quality of sweet cherry. The rootstocks and training systems had a significant effect on vegetative growth and fruit quality. Krymsk 5 x Vogel central leader produced the largest trees. There were no differences between the rootstocks in terms of fruit size; however, the largest fruit was obtained from trees trained to Vogel central leader (VCL) and super slender axe (SSA) as compared to Kym Green bush (KGB) and upright fruiting offshoots (UFO). The coloration on the fruit of the trees grafted on Piku 1 and Krymsk 5 rootstocks and trained to the SSA training system was better and the fruit firmness values were higher with the Gisela 6 x SSA combination. The highest soluble solids content (SSC) values were recorded with Piku 1 x SSA and Gisela 6 x SSA combinations. The bioactive compound content of the fruit varied depending on the rootstock and training system. The fruit of Piku 1 x VCL combination had higher total phenolic content. Antioxidant activity was higher in Krymsk 5 x UFO combination. The study revealed that fruit quality was better with SSA and VCL training systems.
Some Chemical Composition of Walnut (Juglans Regia L.) Selections From Eastern Turkey
(Academic Journals, 2010) Muradoglu, Ferhad; Oguz, H. Ibrahim; Yildiz, Kenan; Yilmaz, Hudai
The aim of this study was to determine the chemical and mineral contents of eighteen walnut genotypes which were newly selected from Hizan (Bitlis) located in Eastern Anatolia. The protein, total fat, total oil (saturated and unsaturated oil) compositions and mineral contents were investigated. It was found that the average value for protein was 18.1% and for total fat was 58.2%. Saturated fatty acids composition values were less than the values of monounsaturated fatty acids composition and polyunsaturated fatty acids composition in all genotypes. Among the identified fatty acids, linoleic acid (50.58 - 66.60%) was the predominant fatty acid followed by oleic acid (14.88 - 28.71%) and linolenic acid (9.16 - 16.42%) in all genotypes. The other fatty acids were found in trace contents. The minimum and maximum macronutrient contents of walnut were determined as mg100 g(-1) for K (911.0 - 684.3), P (434.7 - 356.2), Ca (756.7 - 388.2), Mg (444.0 - 330.8) and Na (48.9 - 26.1) while minimum and maximum micronutrient contents of walnut were determined for Fe (6.6 - 4.3), Cu (2.8 - 1.8), Mn (5.7 - 2.7) and Zn (4.3 - 2.7). The potassium contents were found to be higher than those of the other minerals in all kernels of the walnuts.