WoS İndeksli Yayınlar Koleksiyonu

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Adaptation of Eight American Blackberry (Rubus Fructicosus L.) Cultivars for Central Anatolia
(Academic Journals, 2008) Eyduran, S. Peral; Eyduran, Ecevit; Khawar, Khalid Mahmood; Agaoglu, Y. Sabit
Blackberry is an important fruit plant cultivated for its delicious fruit throughout Europe and America. Although the fruit has wide acceptance in Turkey, it is not cultivated on large scale. The study aimed to evaluate the performance of Arapaho, Black Satin, Cherokee, Chester Thornless, Dirksen Thornless, Jumbo, Navaho and Loch Ness cultivars of American origin for adaptation under Central Anatolian conditions at Ankara during 2002-06. The results showed that changes in the environmental conditions affected yield, performance of number of canes, cane length, cane diameter, yield per plant, fruit weight and total acid content (g/l) significantly. Overall comparison of the results showed that cv. Chester Thornless is most suitable for the environmental conditions of Central Anatolia.
Allelopathic Potential of Macrofungi on Germinating Maize (Zea Mays L.) Grain
(Academic Journals, 2010) Uzun, Y.; Türker, M.; Kaya, A.; Demirel, K.; Işler, S.; Keleş, A.
The effect of methanol extracts of 10 macrofungi was evaluated on grain germination of maize (Zea mays L.). Germination percentage, radicle and plumule length and the level of carbohydrates and fatty acids were measured. Fungal metabolites inhibited germination up to 90.96%, plumule (97.77%) and radicle (92.83%) development. Plumule and radicle lengths were stimulated 35.26 and 10.60% in some assays, respectively. The fungal metabolites decreased the glucose (97.60%), sucrose (90.34%), fructose (96.85%), maltose (95.64%), oleic acid (97.50%) and linoleic acid (98.25%) levels, whereas increasing levels of the glucose (165.14%), sucrose (166.53%), fructose (83.18%), maltose (124.73%), oleic acid (6975.00%) and linoleic acid (5233.33%) were detected in some assays. It is concluded that macrofungi metabolites have commonly inhibitory effects on physiological and morphological processes of germinating maize grain except for considerable increases in the some parameters investigated. © 2010 Academic Journals.
Alleviation of Osmotic Stress of Water and Salt in Germination and Seedling Growth of Triticale With Seed Priming Treatments
(Academic Journals, 2008) Yagmur, Mehmet; Kaydan, Digdem
Effects of seed priming treatments with 0.5% KH2PO4 (w/v) solution and water were determined on germination and seedling characters of hexaploid triticale (Triticosecale Witm., cv. Presto) in different osmotic potential of NaCl and PEG solutions. Drought and salt osmotic stress conditions were separately created by using PEG 6000 and NaCl, respectively, at different osmotic potentials (-0.45, -0.77, -1.03 and -1.44 MPa and control). At the equivalent osmotic potential, the effects of PEG 6000 were more harmful than NaCl on germination and seedling stage. Germination percentage and seedling growth and also relative water content (RWC, %) decreased with the decrease in osmotic potential of PEG 6000 and NaCl. But root-to-shoot length ratios increased with the effects of osmotic stress of PEG 6000 and NaCl. Despite the negative effects of two stress conditions, the two priming treatments were effective in improving germination percentage and seedling growth in Presto. But seed primed treatment was effective at the lowest osmotic potentials; therefore, seedling growth survived at the highest concentrations. Consequently, the effect of hydropriming is very pronounced particularly in improving germination and seedling growth in low stress.
Antibacterial Activities of Allium Vineale, Chaerophyllum Macropodum and Prangos Ferulacea
(Academic Journals, 2006) Durmaz, Hisamettin; Sagun, Emrullah; Tarakci, Zekai; Ozgokce, Fevzi
Allium vineale L., Chaerophyllum macropodum Boiss. and Prangos ferulacea (L.) Lindl. have been used for cheese production in Turkiye for many centuries. In addition, it is traditionally believed by local people that these plants have antibacterial activity. The purpose of this study was to evaluate the antibacterial activity of these plants. Four solvent extracts (in methanol, ethanol, n-hexane and water) of the plants were investigated against Bacillus cereus, Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Salmonella enteritidis and Salmonella typhimurium by using disc diffusion method. The methanol, ethanol and n-hexane extracts of all the plants showed antibacterial activity against B. cereus, B. subtilis, M. luteus and S. aureus, while the methanol extract of Allium vineale was also active against P. mirabilis. However, the water extracts of these plants had no antibacterial activity against any of the bacteria tested. The methanol extracts had the higher activity followed by the extracts of ethanol and n-hexane. A. vineale showed the higher antibacterial activity as compared with C. macropodum and P. ferulacea. As a result, organic solvent extracts (especially methanol and ethanol extracts) of these plants can be used as natural antibacterial additives for incorporation in cheese and various food products.
Basic Elements of the Traditional Garden Identity in the City of Van
(Academic Journals, 2010) Alp, S.; Ozturk, S.; Turkoglu, N.; Koyuncu, M.
Garden culture in the architectural patterns in and around the city of Van in the East Anatolian region of Turkey has been a tradition from the Urartian Iron Age Kingdom in Eastern Anatolia to the present. Until the end of the nineteenth century, the city of Van had an exclusive residential area where houses were surrounded by gardens. In this study, by exploring the texture of the old gardens in some current residential areas of the Van city center and its surroundings, we evaluated depending on the house-garden relationship, the street-house relationship, and size, garden elements, types of the plants. In this study the garden culture and understanding of the landscape will be brought from the time of the Urartians to our time and to the future. Further, an understanding of the traditional use of plant types in the city and their ornamental use will be recorded and perpetuated for regenerating into garden culture.
Changes in Micronutrients, Dry Weight and Plant Growth of Soybean (Glycine Max L. Merrill) Cultivars Under Salt Stress
(Academic Journals, 2008) Tunçturk, M.; Tunçturk, R.; Yasar, F.
This study was carried out to determine the effects of salt stress on the growth, dry weights and micronutrient contents of soybean cultivars grown in green house conditions. Twelve soybean cultivars (Omaha, A-3127, Mancon, Stresland, LN-89-3264, NE-3297, Ap-2292, Althow, Irigious, S-4520, Amsoy-71 and Cisne) were exposed to salinity treatments (150 mM NaCl and Control). Shoot, leaf and root dry weights of all cultivars at 45-day-old plants were determined. Micronutrient contents (Fe, Mn, Cu and Zn) of leaves, stems and roots were also analyzed. Salinity stress negatively affected soybean cultivars and the extent of effects varied depending on the salt tolerance of the cultivars. Generally, salinity reduced the plant growth and dry weights. Fe, Mn, Cu and Zn concentrations were higher in roots compared with those in leaves and shoots in salt applied samples. It was determined that, micronutrient contents showed some variation in different organs of soybean cultivars as a result of salt application to growing environment. Iron (Fe), manganese (Mn) and copper (Cu) content increased in the samples with salt applications except in some cultivars. On the other hand, when mean data of cultivars were considered, zinc (Zn) content was not significantly affected by salt stress. © 2008 Academic Journals.
Changes in Nitric Oxide Levels and Erythrocyte Arginase Activities in Patient With Down Syndrome
(Academic Journals, 2012) Ozbey, Ulku; Seyran, Ayse; Erisir, Mine; Benzer, Fulya; Savucu, Yuksel
Down syndrome is a chromosome abnormality with specific clinical symptoms and mental retardation caused by trisomy of chromosome 21. There is evidence that oxygen free radicals play an important role in the pathophysiology of many neuropsychiatric disorders. Although, it has not been investigated yet, several recent studies proposed that nitric oxide related to oxidative stress and arginase may have a pathophysiological role in mental retardation. The purpose of this study was to determine plasma nitric oxide levels and erythrocyte arginase activities in patients with Down syndrome and in healthy children. Plasma nitric oxide levels and erythrocyte arginase activity were measured in 20 patients with Down syndrome (median age: 15.6 +/- 7.5) and 20 age-matched healthy subjects (median age: 16.2 +/- 7.4). Significant differences were found between erythrocyte arginase activity of the patients with Down syndrome (35.2 +/- 2.7 U/g hemoglobin (Hb)) and those of healthy children (43.5 +/- 2.9 U/g Hb), (P < 0.05). But we have not found any statistical difference between persons with Down syndrome and control group for nitric oxide (P > 0.05). It was concluded that the level of erythrocyte arginase activity could be considered as a useful marker for assessing the level of mental retardation in children with Down syndrome.
Changes Occurring in Plain, Straining and Winter Yoghurt During the Storage Periods
(Academic Journals, 2011) Kose, Senol; Ocak, Elvan
In this study, winter yoghurt, straining yoghurt and yoghurt samples produced from homogenized and non-homogenized sheep and a mixture of sheep and cows milks were evaluated during the storage periods. Winter yoghurt, straining yoghurt and yoghurt samples were stored in sterile jars in the refrigerator (4 C). Some chemical and physical analyses were made to determine the effect of milk types (cow and sheep), homogenization (homogenized and nonhomogenized) and storage times in winter yoghurt samples on the 3rd, 7th, 15th, 30th, 60th, 90th, 120th, 150th and 180th days, in straining yogurt samples on the 3rd, 7th, 15th, 30th and 60th days and in plain yoghurt samples on 3rd, 7th, 15th and 30th. Contents of the average dry matter, fat, protein, pH, titratable acidity, lipolysis, proteolysis, clot firmness and stickiness in winter yoghurt samples were determined as follows respectively: 23.79, 9.29, 8.99, 3.96, 1.75, 0.72%, 97.91 mM, 9.44 N and 5.50 N. No serum separation existed in winter yoghurts.
Changes of Micronutrients, Dry Weight and Plant Development in Canola (Brassica Napus L.) Cultivars Under Salt Stress
(Academic Journals, 2011) Tuncturk, Murat; Tuncturk, Ruveyde; Yildirim, Bunyamin; Ciftci, Vahdettin
This study was carried out to determine the effects of salt stress on the growth, dry weights and micronutrient contents of canola (Brassica napus L.) cultivars grown in greenhouse conditions. 12 canola cultivars (Marinca, Kosa, Spok, Semu DNK207 NA, Tower, Liraspa, Star, Tobin, Helios, Semu 209/81, Regent and Lirawell) were exposed to salinity treatments (150 mM NaCl and control). Shoot, leaf and root dry weights of all the cultivars at 45-day-old plants were determined. Micronutrient contents (Fe, Mn, Cu and Zn) of the leaves, stems and roots were also analyzed. Salinity stress negatively affected the canola cultivars and the extent of effects varied depending on the salt tolerance of the cultivars. Generally, salinity reduced the plant growth and dry weights. Fe, Mn, Cu and Zn concentrations were high in the roots when compared with those in the leaves and shoots in the salt applied samples. It was observed that, micronutrient contents showed some variation in the different plant parts of the canola cultivars as a result of salt applications to the growing media. Iron (Fe), manganese (Mn) and copper (Cu) content increased in all the plant parts with salt applications except for some cultivars. On the other hand, when mean data of the cultivars were considered, it could be said that zinc (Zn) content of the leaves was not significantly affected by the salt stress.
Changes of the Lipid Peroxidation and Chlorophyll Amount of Green Bean Genotypes Under Drought Stress
(Academic Journals, 2010) Yasar, Fikret; Uzal, Ozlem; Ozpay, Taylan
One of the environmental stresses, and maybe one of these important drought stresses, cause deterioration of oxidative on the plant cell. Beans is one of the vegetables influenced by high level of drought. Drought stress deterioration effects on beans and its aim determines these effects either as been different or not caused by drought stress dependent on 10 item beans (Phaseolus vulgaris L.) variety. To get the hydroponic condition ready in time within 15 days, plant with 10% ratio of polyethyleen glycol (PEG 6000) were used to create drought effects. Bean leaves were harvested 6 days later after PEG implementation and were measured. The amount of lipid peroxidation production and malondyhalheit were directed towards determining the oxidative deterioration and in addition the chlorophyll amount. As a result of drought implementation, Samsun 96 (S96) and Sirik Barbunya (SB) beans genotypes have the most decreased chlorophyll amount than Gevas Sirik 57(GS57) and Oturak Barbunya (OB) genotypes. At the same time, S96 and SB genotypes have the most increased malondyhalheit (MDA) content than GS57 and OB. Also, of the total ten item of beans variety, Gevas Sirik 57 and Oturak Barbunya were least affected by drought stress, while S96 and SB genotypes showed more sensitivity to drought stress.
Comparison of Some Local Melon Genotypes Selected From Lake Van Basin With Some Commercial Melon Cultivars for Some Yield and Quality Related Traits Observed in Field and High Tunnel Conditions
(Academic Journals, 2008) Erdinc, Ceknas; Turkmen, Onder; Sensoy, Suat
This study aimed to compare some local melon (Cucumis melo L.) genotypes selected from the Lake Van Basin (65 ER 02, 65 ER 04, and 13 TAT 05) with some commercial melon cultivars (Ananas, Makdimon F(1), and Rambo F(1)) for some yield and quality related traits observed in field and high tunnel conditions for two years. At the end of the study, it was determined that Makdimon F(1) produced the highest early and total yields (14.76 and 30.51 t ha(-1), respectively). While the locally selected melon genotype 65 ER 04 followed Makdimon F(1) for the early yield (11.43 t ha(-1)), the locally selected genotype 65 ER 02 followed Makdimon F1 for the total yield (22.49 t ha(-1)). The cultivars Rambo F(1) and Makdimon F(1) had higher soluble solid contents than the others.
Critical Period of Weed Control in Winter Lentil Under Non-Irrigated Conditions in Turkey
(Academic Journals, 2008) Erman, Murat; Tepe, Isik; Bukun, Bekir; Yergin, Reyyan; Taskesen, Mehtap
This study was conducted during the growing seasons of 1998-1999 and 2003-2004 to determine the critical period of weed control (CPWC) in winter-lentil (cv. Sazak-91). The experiments were laid out in a randomised block design with four replications. The beginning and end of CPWC were based on 5% acceptable yield loss levels which were determined by fitting logistic and Gompertz equations to relative yield data, representing increasing duration of weed-interference and weed-free period, estimated as growing degree days (GDD). The results indicated that CPWC for seed yield was between 237 and 846 GDD in the first year and between 123 and 414 GDD in the second year, while CPWC for biomass was between 216 and 820 GDD in the first year and between 212 and 374 GDD in the second year. Thus weeds should be controlled from the first week after the onset of regrowing stage of the crop in spring up to 7th week for winter-lentil to avoid losses above 5%.
Detection and Partial Characterization of Two Distinct Walnut Isolates of Cherry Leaf Roll Virus (Clrv)
(Academic Journals, 2011) Sipahioglu, H.M.; Tekin, Z.; Usta, M.
Two new cherry leaf roll virus (CLRV) isolates (Ah and Ad) were isolated and detected from traditionally-grown walnuts that showed severe apical necrosis and chlorotic spots in systemically infected Cheneopodium amaranticolor, in the eastern part of Turkey. The 404 and 405 bp long DNA fragments of the 3'-non-coding region of both isolates from PCR reactions were cloned and sequenced. A significant genetic variability (up to 14% divergence between sequences) was found within the 3' terminal region of viral genome of CLRV Turkish isolates compared with the isolates in databases. The sequence of Ad isolate was found to share 84 to 98% and the Ah isolate was found to share 85 to 97% nucleotide identity with corresponding sequences of the selected world isolates. An RNA riboprobe generated for CLRV-Ad isolate reacted also with the CLRV-Ah isolate in dot blot molecular hybridization test. Positive reactions were still visible in hybridization test when the extracts of infected fresh and dried leaf tissues of C. amaranticolor diluted 1:20. Western blot analysis revealed that the molecular mass of the coat protein of about 52 kDa for both isolates. © 2011 Academic Journals.
Detection of Species Diversity of Arbuscular Mycorrhizal Fungi (Amf) Classic and Molecular Methods From the Melon (Cucumis Melo L.) Plants in Van and Its Districts
(Academic Journals, 2011) Savur, Orcun Burak; Demir, Semra
Arbuscular-mycorhizal fungi (AMF) from melon plants grown in Van province, were studied by nested-PCR method to establish colonization ratio of related fungi in plants and to detect the fungi at species level. From 10 different locations, a total of 100 soil samples were taken from rhizosphere area of melon plants. It was also determined that 52% of these plants were colonized by arbuscular-mycorhizal fungi and were able to establish symbiotic relationship in variable ranges (4.5 to 37.8%) Glomus intraradices and Glomus mosseae were two identified AMF.
Determination of Physiological Responses on Hyacinth (Hyacinthus Orientalis) Plant Exposed To Different Salt Concentrations
(Academic Journals, 2011) Turkoglu, N.; Erez, M. E.; Battal, P.
Plant growth is restricted by many environmental factors. Soil salinity is considered as an important agricultural problem for dry and semi-dry fields in many regions around the world. It is known that salinity is an important stress factor restricting water and nutrient intake of plants. In this study, the physiological responses of hyacinth (Hyacinthus orientalis) exposed to different salt concentrations (0, 50, 100, 200 and 400 mM) were investigated. The stomata status, osmotic potential, proline content, chlorophyll and caretonoid contents and protein variances were examined in the plants exposed to salt. The physiological responses of the hyacinth varied depending on the salt concentration. Stress was kept under control at concentrations of 50, 100 and 200 mM; however, bulbs were decayed and necrosis was formed on the leaves at concentration of 400 mM. This study on hyacinth will help us to learn about tolerance mechanisms raised by plants with bulb against salt stress. It was seen in this study that the stomata size decreased when the salt concentration was increased and the chlorophyll and caretonoid contents also decreased. A significant decrease was seen in proline content and it increased at 400 mM and some protein bands which existed in control group disappeared in electrophoresis study.
Discrimination and Numerical Analysis of Human Pathogenic Candida Albicans Strains Based on Sds-Page Protein Profiles
(Academic Journals, 2008) Berber, Ismet; Ekin, Suat
In the present study, 21 Candida albicans strains were investigated using the commercial kit API 20C AUX system and the numerical analysis of whole-cell protein profiles. The results of the commercial kit confirmed that the all the strains belonged to C. albicans species. However, the research indicated that SDS-PAGE of polypeptides of whole-cell extracts can provide more valuable taxonomic information than conventional yeast test kits at the subspecies level. Despite the fact that C. albicans subtypes isolated from different anatomical sites had similar protein profiles, there were some distinctive protein bands. Numerical analysis of whole-cell protein profiles of all strains revealed 2 major clusters at similarity degrees of between 46.26 and 100%. Moreover, the results of numerical analysis confirmed that each cluster had characteristic and distinctive protein profiles. The research showed that, the morphological examination of yeast isolates remains essential to obtaining a correct identification, both the commercial yeast kit system and the numerical analysis of whole-cell protein patterns can be useful for the more reliable identification of C. albicans strains.
Dissolution Kinetics and Mechanism of Pandermite in Acetic Acid Solutions
(Academic Journals, 2010) Gur, Aycan; Caglayan, Firat; Yildiz, Adnan; Selcuk, Ahmet
In this study, the dissolution kinetics and mechanism of pandermite mineral was investigated using a batch reactor employing the parameters of particle size, acid concentration, solid/liquid ratio, stirring speed and reaction temperature. From experimental data, it was determined that the conversion rate of pandermite to boric acid was increased with decreasing particle size, solid/liquid ratio and increasing reaction temperature. Conversion rate increased up to 3 M, acid concentration then decreased with increasing acid concentration. It was observed that there was no important effect of stirring speed on the dissolution rate. Furthermore, it was observed that the dissolution mechanism was dependent on acid concentration due to restriction of dissolution in acetic acid solutions. The dissolution rate of pandermite mineral in acetic acid solution was examined according to homogeneous and heterogeneous chemical reaction model. It was determined from graphical and statistical methods that the reaction kinetics fitted to model in the form of first order pseudo homogeneous model [- ln (1 - X)] = kt and activation energy for the dissolution process was found to be 28.496 kj/mol. A mathematical model, which indicated the dissolution process was established.
Effect of Atrazine Applications on Weed Growth and Yield at Different Irrigation Levels in Corn (Zea Mays L.) Growth
(Academic Journals, 2010) Kaya, Ilhan; Celebi, Seyda Zorer; Yergin, Reyyan; Yilmaz, Ibrahim Hakki
Corn (Zea mays L.), for silage, is very important in animal feeding because winter seasonal conditions last longer in Eastern Turkey. Corn yield components were investigated in plots, in which herbicide had been applied and also not applied at different irrigation levels in this study. The study lasted for two years and soil-water content was kept at five different levels [96% (I-1), 63% (I-2), 32% (I-3), 15% (I-4) and 4% (I-5)]. The species and intensities of the weeds at the irrigation levels were determined in the study. Plant length, green and dry herbage yields, leaf, stem and ear ratios were studied as criteria for corn yield. At the same irrigation levels, higher efficiency values were determined according to non applied plots in the atrazine applied plots. In both years, the lowest green herbage and dry herbage yields were determined at I-4 and I-5 irrigation levels. The weeds that are mostly seen on the plots, in which atrazine had not been applied are Alopecurus myosuroides Huds. and Sinapis arvensis L, respectively. Similarly, for both years, high densities of weeds were observed in the highly moisturized lands. The atrazine activities increased at the I-1 and I-2 irrigation levels in which water content of the soil is high.
The Effect of Bacillus Sp Osu-142 Inoculation at Various Levels of Nitrogen Fertilization on Growth, Tuber Distribution and Yield of Potato (Solanum Tuberosum L.)
(Academic Journals, 2009) Ekin, Zehra; Oguz, Faruk; Erman, Murat; Ogun, Erdal
The objective of this study was to evaluate the yield response of potato to inoculation with Bacillus sp. OSU-142 at three levels of N fertilization (0, 120, and 240 kg ha(-1)) under field conditions in Ahlat District of Eastern Anatolia Region of Turkey in 2006 and 2007. Tuber inoculation with Bacillus sp. OSU-142 significantly affected yield and yield components in both years. Tuber yields and yield components were higher at all levels of nitrogen fertilizer in the inoculated plots as compared to the control. However, beneficial effect of Bacillus sp. OSU-142 on tuber yield was noted at 120 kg N ha-1, possibly indicating either more effective of inoculation in the low-N input agriculture or an interaction of Bacillus sp. OSU-142 with higher yielding seasonal conditions. In general, more response to inoculation was observed in the absence of major crop growth limitations, suggesting the complementary contribution of the Bacillus sp. OSU-142 treatment to more efficiently developing higher yielding potato.
The Effect of Coq10 and Vitamin E on Serum Total Sialic Acid, Lipid-Bound Sialic Acid, Some Trace Elements and Minerals in Rats Induced With Doxorubicin
(Academic Journals, 2011) Oto, Gokhan; Ekin, Suat; Yasar, Semih; Ozdemir, Hulya; Yur, Fatmagul
This study was designed to evaluate the effect of CoQ(10) and vitamin E on serum total sialic acid (TSA), lipid bound sialic acid (LSA) and some elements in rat administered doxorubicin (DXR). Cu levels were increased in the group treated with DXR + vitamin E in comparison with DXR (p<0.05) and CoQ(10) groups (p = 0.001). Furthermore, copper levels were increased in the group treated with DXR + CoQ10 in comparison with CoQ(10) group (p < 0.05). Zn levels were decreased in the group treated with DXR + vitamin E in comparison with CoQ(10) group (p < 0.05). Mg levels were decreased in subjects treated with DXR + vitamin E in comparison with the control group values (p < 0.05). Particularly, the observed increase in Cu levels in rats from DXR + vitamin E group might be due to the decrease of vitamin E. However, the oxidative damage could be as a result of DXR occurence and may be helpful to clinicians in chemotherapy using anthracycline.

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