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2011

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C- And Nor Stained Karyotypes Of Mole Rat, Nannospalax Xanthodon (2n = 54) From Kırıkkale, Turkey, Ati̇lla Arslan, Kubi̇lay Toyran, Serdar Gözütok, Tarkan Yorulmaz Jan 2011

C- And Nor Stained Karyotypes Of Mole Rat, Nannospalax Xanthodon (2n = 54) From Kırıkkale, Turkey, Ati̇lla Arslan, Kubi̇lay Toyran, Serdar Gözütok, Tarkan Yorulmaz

Turkish Journal of Biology

In the present study, the 2n = 54 chromosomal race of blind mole rats, Nannospalax xanthodon superspecies, from Kırıkkale Province in Turkey was investigated. Conventional chromosome staining, Ag-NOR (Nucleolus Organizer Region) staining, and C-banding analysis were carried out on specimens of mole rats. The karyotype including 3 metacentric pairs (nos. 1-3), 3 submetacentric pairs (nos. 4-6), 3 subtelocentric pairs (nos. 7-9), and 17 acrocentric pairs (nos. 10-26) of autosomes (NFa = 70). C-heterochromatin regions were found in the centromeric and pericentromeric region and the short arms of some bi-armed autosomal pairs, and C-heterochromatin was localized in pericentromeric areas of a …

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Cytogenetic And Biochemical Effects Of Imazethapyr In Wheat (Triticum Durum), Manijeh Hoseiny Rad, Ali Ashraf Aivazi, Shobha Jagannath Jan 2011

Cytogenetic And Biochemical Effects Of Imazethapyr In Wheat (Triticum Durum), Manijeh Hoseiny Rad, Ali Ashraf Aivazi, Shobha Jagannath

Turkish Journal of Biology

Mitotic abnormalities, chromosomal behavior, and protein content in wheat (Triticum durum) due to imazethapyr (IM) treatment were determined. Wheat seeds (variety HI-8663) were exposed to 5 IM concentrations (0.5, 0.89, 1.58, 2.81, and 5 ppm) according to the between paper method, in laboratory conditions. The protein content in the root-shoot axis and endosperm decreased significantly with the dosage increase. Cytological observations showed that the mitotic frequency in the root meristematic cells decreased parallel to the increase in concentrations. The most common types of the observed anomalies were sticky chromosomes, lagging chromosomes, scattered chromosomes, chromatin bridges, and micronuclei. The results revealed …

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Utilization Of Cytochrome Oxidase I In Cephus Pygmeus (L.) (Hymenoptera: Cephidae), Ertan Mahi̇r Korkmaz, Mahi̇r Budak, Hasan Hüseyi̇n Başibüyük Jan 2011

Utilization Of Cytochrome Oxidase I In Cephus Pygmeus (L.) (Hymenoptera: Cephidae), Ertan Mahi̇r Korkmaz, Mahi̇r Budak, Hasan Hüseyi̇n Başibüyük

Turkish Journal of Biology

The mitochondrial cytochrome oxidase I (COI) gene region of Cephus pygmeus (L.) (Hymenoptera: Cephidae) was characterized at the nucleotide and amino acid levels. The partial sequence (687 bp) of the gene was determined and compared with other cephids and insect species at both the nucleic acid and amino acid sequence levels. The examined fragment was placed at an equal distance to both ends of the gene and consisted of 13 structural regions. The 5' end of the partial COI gene was more informative than the 3' end at the intraspecific level. Pairwise sequence divergences ranged from 0.15% to 1.17% at …

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The Effects Of Leptin Hormone On Locomotor Activity In Syrian Hamsters (Mesocricetus Auratus), Bülent Gündüz, Alper Karakaş Jan 2011

The Effects Of Leptin Hormone On Locomotor Activity In Syrian Hamsters (Mesocricetus Auratus), Bülent Gündüz, Alper Karakaş

Turkish Journal of Biology

The suprachiasmatic nucleus (SCN) generates and controls the circadian rhythms in mammals including the rhythm of locomotor activity. Leptin is a hormone secreted by adipose tissue that informs the brain about the fat stores. SCN neurons express leptin receptors. Here we investigated the effects of 3 different leptin administrations on the locomotor activity of the Syrian hamsters maintained in constant darkness. Animals were intraperitoneally (ip) injected (4 µg/kg), subcutaneously (sc) infused (4 µg/kg), or intra-SCN infused (0.4 µg/kg) with leptin for 3 days at circadian time 10 whereas the controls received saline (0.9% NaCl) at the same time in order …

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A Comparative Evaluation Of Antioxidant And Anticancer Activity Of Essential Oil From Origanum Onites (Lamiaceae) And Its Two Major Phenolic Components, Aysun Özkan, Ayşe Erdoğan Jan 2011

A Comparative Evaluation Of Antioxidant And Anticancer Activity Of Essential Oil From Origanum Onites (Lamiaceae) And Its Two Major Phenolic Components, Aysun Özkan, Ayşe Erdoğan

Turkish Journal of Biology

The objectives of the present study were to determine the effects of essential oil from Turkish oregano (Origanum onites L.) and its 2 major phenolic components, carvacrol and thymol, on cell viability, and to investigate their cytoprotective (antioxidant) effects against hydrogen peroxide-induced cytotoxicity and membrane damage in hepatoma G2 (Hep G2) cells. Their antioxidant properties were also evaluated with 2 in vitro complementary test systems: DPPH radical scavenging activity and linoleic acid oxidation inhibition. The aerial parts of the essential oil were isolated using a Clevenger-type apparatus (hydrodistillation) and its components were analyzed by gas chromatography/mass spectrometry (GC/MS). The essential …

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Bioassay Studies Of 2'-O-Ethylmurrangatin Isolated From A Medicinal Plant, Murraya Paniculata, Azizuddin Shaikh, Muhammad Iqbal Choudhary Jan 2011

Bioassay Studies Of 2'-O-Ethylmurrangatin Isolated From A Medicinal Plant, Murraya Paniculata, Azizuddin Shaikh, Muhammad Iqbal Choudhary

Turkish Journal of Biology

A secondary metabolite, 2^'-O-ethylmurrangatin (1), was isolated from the leaves of a medicinal plant, Murraya paniculata. The structure of compound 1 was identified with the help of spectroscopic techniques. Compound 1 was screened for its antioxidant, lipoxygenase, prolyl endopeptidase, and respiratory burst inhibitory activities. 2^'-O-Ethylmurrangatin (1) was found to have significant activity against lipoxygenase enzyme and moderate respiratory burst inhibitory activity, but no activity against either DPPH radical scavenging assay or prolyl endopeptidase enzyme.

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Anti-Inflammatory Activity Of Anthemis Aciphylla Var. Aciphylla Boiss., Si̇nem Özkaynak, Hati̇ce Efsun Kolatan, Osman Yilmaz, Bi̇jen Kivçak Jan 2011

Anti-Inflammatory Activity Of Anthemis Aciphylla Var. Aciphylla Boiss., Si̇nem Özkaynak, Hati̇ce Efsun Kolatan, Osman Yilmaz, Bi̇jen Kivçak

Turkish Journal of Biology

Ethanolic (EEAA) and sesquiterpene lactone (SEAA) extracts of the aerial parts of Anthemis aciphylla var. aciphylla Boiss. (Asteraceae) were evaluated for anti-inflammatory activity on carrageenin-induced paw edema (acute model) and cotton pellet-induced granuloma (chronic model) in rats. In carrageenin-induced paw edema, EEAA and SEAA at intraperitoneal doses of 50, 100, and 200 mg/kg dose-dependently inhibited the paw edema. In cotton pellet-induced granuloma, the oral administration of EEAA and SEAA at 50, 100, and 200 mg/kg dosages was also found to significantly inhibit granuloma tissue formation.

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Biology

No abstract provided.

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Biology

No abstract provided.

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Genetic Analysis Of Preharvest Sprouting Tolerance In Bread Wheat (Triticum Aestivum L. Emend. Thell.), Cemal Yücel, Faheem Shehzad Baloch, Rüştü Hati̇poğlu, Hakan Özkan Jan 2011

Genetic Analysis Of Preharvest Sprouting Tolerance In Bread Wheat (Triticum Aestivum L. Emend. Thell.), Cemal Yücel, Faheem Shehzad Baloch, Rüştü Hati̇poğlu, Hakan Özkan

Turkish Journal of Agriculture and Forestry

Rains during grain ripening in wheat (Triticum aestivum L.) can cause preharvest sprouting (PHS), which drastically affects the grain yield and the baking quality of flour. In the present study, to screen 7 cultivars and 4 lines of spring bread wheat for PHS, germination tests were conducted with seeds obtained from wet spikes harvested immediately after natural rainfall. Germination tests were carried out as 3 different treatments: 1) seeds immediately germinated after hand-threshing on sampling day (T_1), 2) seeds germinated 1 week later after hand-threshing (T_2), and 3) 10 intact spikes kept on paper under laboratory conditions at room temperature, …

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Determination Of The Effect Of Biodiesel Use On Power Take-Off Performance Characteristics Of An Agricultural Tractor In A Test Laboratory, Ali̇ Aybek, Emrullah Başer, Selçuk Arslan, Mustafa Üçgül Jan 2011

Determination Of The Effect Of Biodiesel Use On Power Take-Off Performance Characteristics Of An Agricultural Tractor In A Test Laboratory, Ali̇ Aybek, Emrullah Başer, Selçuk Arslan, Mustafa Üçgül

Turkish Journal of Agriculture and Forestry

Tractor performance tests conducted under laboratory test conditions are important because these tests determine the performance characteristics used to compare strengths and weaknesses of tractors. The objective of this study was to determine the effect of diesel fuel (B0) and 3 different biodiesel blends made of canola oil (B10, B20, B30) on tractor power take-off (PTO) performance characteristics. Performance characteristics studied were PTO power, engine torque, engine fuel consumption, and specific fuel consumption on an agricultural tractor (Massey Ferguson 3056 2WD) at the test laboratory of the Directorate of Agricultural Machinery Test Center (TAMTEST), Ministry of Agriculture and Rural Affairs, …

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Effects Of Nitrogen And Harvesting Time On Chemical Composition Of Biomass Of Sudan Grass, Fodder Sorghum, And Their Hybrid, Dorde Glamoclija, Snezana Jankovic, Sveto Rakic, Radojka Maletic, Jela Ikanovic, Zeljko Lakic Jan 2011

Effects Of Nitrogen And Harvesting Time On Chemical Composition Of Biomass Of Sudan Grass, Fodder Sorghum, And Their Hybrid, Dorde Glamoclija, Snezana Jankovic, Sveto Rakic, Radojka Maletic, Jela Ikanovic, Zeljko Lakic

Turkish Journal of Agriculture and Forestry

The subject of this study is 2-year variability research (2007 and 2008) of the chemical composition of naturally dried biomass samples of 3 different sorghum species, which are widely used in the southeast Balkans. Samples of Sudan grass Zora, fodder sorghum NS-Dzin, and their hybrid Siloking were examined based on the quantity of used nitrogen and the harvest time. Plants were grown in the experimental field of Radmilovac (property of the Faculty of Agriculture in Belgrade) in a randomized block, split-split plot design with 3 replications for 2 years. Naturally dried biomass with the highest amount of total proteins was …

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Evaluation Of Some Wood Quality Measures Of Eight-Year-Old Melia Azedarach Trees, Loutfy Ibrahim El-Juhany Jan 2011

Evaluation Of Some Wood Quality Measures Of Eight-Year-Old Melia Azedarach Trees, Loutfy Ibrahim El-Juhany

Turkish Journal of Agriculture and Forestry

This study investigated the wood quality of 8-year-old Melia azedarach trees grown in Saudi Arabia. The wood quality of the trees was studied in terms of fibre length, specific gravity, and heartwood/sapwood area. The sampled trees were felled, their stem height and diameter were measured, and discs were cut from the stem base and breast height of each tree. Fibre length and specific gravity at breast height were determined, as well as the area and proportion of heartwood and sapwood at both base- and breast-height cross sections. The results showed that the fibre length of Melia azedarach wood varied between …

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Time-Dependent Changes In Distribution Patterns Of Soil Bulk Density And Penetration Resistance In A Rangeland Under Overgrazing, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş, Müdahi̇r Özgül Jan 2011

Time-Dependent Changes In Distribution Patterns Of Soil Bulk Density And Penetration Resistance In A Rangeland Under Overgrazing, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş, Müdahi̇r Özgül

Turkish Journal of Agriculture and Forestry

High soil bulk density and penetration resistance as an indication of soil compaction affect soil infiltration and runoff. Overgrazed rangelands are under severe erosion risk because of soil compaction. The objective of this study was to determine changes in soil bulk density and penetration resistance in a high altitude rangeland within a 3-month grazing period. A 5-ha rangeland (200 × 250 m) was transected with intervals of 25 × 5 m, and soil penetration resistance was measured at 459 points in the 20-cm surface soil layer on 3 different dates (15 July, 15 August, and 15 September). At each intersection …

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Effect Of Sowing Time On Grain Yield, Oil Content, And Fatty Acids In Rapeseed (Brassica Napus Subsp. Oleifera), Hakan Turhan, Muhammet Kemal Gül, Cem Ömer Egesel, Fati̇h Kahriman Jan 2011

Effect Of Sowing Time On Grain Yield, Oil Content, And Fatty Acids In Rapeseed (Brassica Napus Subsp. Oleifera), Hakan Turhan, Muhammet Kemal Gül, Cem Ömer Egesel, Fati̇h Kahriman

Turkish Journal of Agriculture and Forestry

Sowing time is an important factor affecting crop yield and quality, especially in arid and semi-arid regions. The aim of this research was to investigate the effects of sowing time on the growth, yield, and quality of rapeseed genotypes and to determine genotype × sowing time interactions for grain yield and its related traits. The study was carried out using 8 winter rapeseed genotypes (H604049, H604038, H604041, Viking, Elan, Titan, Lorenz, and Trabant) and 4 sowing times (10 October, 20 October, 30 October and 10 November) during the 2005-2006 and 2006-2007 growing seasons. An NIRS system was used to determine …

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Interactions Between Rural Migration And Land Use Change In The Forest Villages In The Gökçay Watershed, Ceyhun Göl, Sezgi̇n Özden, Hüseyi̇n Yilmaz Jan 2011

Interactions Between Rural Migration And Land Use Change In The Forest Villages In The Gökçay Watershed, Ceyhun Göl, Sezgi̇n Özden, Hüseyi̇n Yilmaz

Turkish Journal of Agriculture and Forestry

This study was carried out to analyze the spatial and temporal pattern of land use/land cover change (from 1955 to 2008) and migration movement (from 1935 to 2007) in the Gökçay River Watershed. To assess this period, the necessary data were obtained from forest stand maps (1955 and 2008) and evaluated by using Geographic Information Systems. Maps of the study area dated 1955 and 2008 have been analyzed, and land use type and change on the land pattern have been investigated. The data reveal that the percentage of forest area, which was 47% in 1955, rose to 50% in 2008; …

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Effect Of Acid Scarification And Cold Moist Stratification On The Germination Of Cercis Siliquastrum L. Seeds, Elias Pipinis, Elias Milios, Pavlos Smiris, Christos Gioumousidis Jan 2011

Effect Of Acid Scarification And Cold Moist Stratification On The Germination Of Cercis Siliquastrum L. Seeds, Elias Pipinis, Elias Milios, Pavlos Smiris, Christos Gioumousidis

Turkish Journal of Agriculture and Forestry

Dormancy in Cercis siliquastrum seeds is due to the hard, impermeable seed coat and inhibition by endosperm. The effects of acid scarification, cold moist stratification, and the combination of both on breaking dormancy and enhancing seed germination were evaluated. Seeds were scarified with concentrated (95%-97%) sulfuric acid for various times (0, 20, 40, and 60 min), followed by cold moist stratification for 0, 1, 2, 3, or 4 months. Unscarified seeds did not germinate whether they were stratified (up until 4 months) or not. Similarly, seeds that were scarified (20, 40, and 60 min) and then stratified for 0 or …

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Effect Of Different Irrigation Water Salinities On Some Yield And Quality Components Of Two Field-Grown Cucurbit Species, Li Zong, Anna Tedeschi, Xian Xue, Tao Wang, Massimo Menenti, Cuihua Huang Jan 2011

Effect Of Different Irrigation Water Salinities On Some Yield And Quality Components Of Two Field-Grown Cucurbit Species, Li Zong, Anna Tedeschi, Xian Xue, Tao Wang, Massimo Menenti, Cuihua Huang

Turkish Journal of Agriculture and Forestry

Using irrigation water with a salinity level of 0.8, 2, and 5 g L^{-1}, the impact of saline water irrigation on the yield and quality of 2 Chinese Cucurbit species, melon (Cucumis melo cv. Huanghe) and watermelon (Citrullus lanatus. convar megulaspemus) were studied in Minqin Oasis, northwestern China. Our results show that melon yields decreased as water salinity increased, just as concentrations of glutamic acid content rose, although the concentration of most amino acids did not differ significantly. In contrast, watermelon yields decreased significantly as water salinity rose, and fruit number, fruit firmness, fruit crude protein, and essential amino acid …

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Potential Of Steinernema Feltiae (Rhabditida: Steinernematidae) As A Biological Control Agent Against The Cabbage Maggot Delia Radicum (Diptera: Anthomyiidae) In Oilseed Rape, İsmai̇l Alper Susurluk Jan 2011

Potential Of Steinernema Feltiae (Rhabditida: Steinernematidae) As A Biological Control Agent Against The Cabbage Maggot Delia Radicum (Diptera: Anthomyiidae) In Oilseed Rape, İsmai̇l Alper Susurluk

Turkish Journal of Agriculture and Forestry

Entomopathogenic nematodes (EPNs) in families Heterorhabditidae and Steinernematidae have considerable potential as biological control agents against soil-inhabiting insect pests. In the present study, the potential of Steinernema feltiae as a biological control agent against cabbage maggot (CM) Delia radicum (Diptera: Anthomyiidae), persistence of the nematode in areas infested by CM larvae, and foraging behavior of the nematode toward CM and/or oilseed rape roots were examined in the laboratory. The results of the laboratory experiment showed that more than 80% control was achieved against the last instars of D. radicum. Steinernema feltiae persisted in the soil in high numbers for 12 …

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Global Perspectives On First Generation Liquid Biofuel Production, Rok Fink, Saso Medved Jan 2011

Global Perspectives On First Generation Liquid Biofuel Production, Rok Fink, Saso Medved

Turkish Journal of Agriculture and Forestry

Transport today is mostly sustained by liquid fossil fuels, despite the fact that the invention of the combustion engine started with biofuels. However, known environmental impacts and the instability of the fossil-fuel market have revived the status of biofuels. Some concerns have appeared regarding how emerging global climate changes will affect biofuels' feedstock production, since agriculture is strongly dependent on climate variables. Therefore, numerical models were introduced to calculate how temperature and precipitation could affect crop production for biodiesel and bioethanol production. Furthermore, 4 scenarios projected by the Intergovernmental Panel on Climate Change were put into the calculations. The results …

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Investigation Of The Reduction Of Mouldboard Ploughshare Wear Through Hot Stamping And Hardfacing Processes, Aysel Yazici Jan 2011

Investigation Of The Reduction Of Mouldboard Ploughshare Wear Through Hot Stamping And Hardfacing Processes, Aysel Yazici

Turkish Journal of Agriculture and Forestry

The effects of the hot stamping process and different hardfacing techniques, such as shielded metal arc welding (SMAW) and gas metal arc welding (GMAW), on the abrasive wear of ploughshares were investigated under field operational conditions. The abrasive wear losses were determined by measuring the weight and dimension changes before and after tillage. The wear losses of hot-stamped and hardfaced ploughshares were less significant than those of the conventionally heat-treated ploughshare specimens used under field conditions. Conventional heat treatment and hardfacing by the SMAW process decreased the wear weight losses by 46.31% and the dimensional losses by 86.77% in comparison …

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Critical Period Of Weed Control In Chickpea Under Non-Irrigated Conditions, Işik Tepe, Murat Erman, Reyyan Yergi̇n, Beki̇r Bükün Jan 2011

Critical Period Of Weed Control In Chickpea Under Non-Irrigated Conditions, Işik Tepe, Murat Erman, Reyyan Yergi̇n, Beki̇r Bükün

Turkish Journal of Agriculture and Forestry

The present study was conducted during the growing seasons of 2005, 2006, and 2007 to determine the critical period of weed control (CPWC) in chickpea (cv. Aziziye 94). In order to evaluate the beginning of CPWC, weeds were allowed to compete at weekly intervals for 1 to 8 weeks after emergence (WAE) and, at the end of CPWC, plots were kept weed-free at weekly intervals for 1 to 8 WAE by periodic hand hoeing. The beginning and the end of CPWC were based on 5% acceptable yield loss (AYL) levels, which were determined by fitting logistic and Gompertz equations to …

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Cover And Contents Jan 2011

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Sequence Alignment From The Perspective Of Stochastic Optimization: A Survey, İhsan Ömür Bucak, Volkan Uslan Jan 2011

Sequence Alignment From The Perspective Of Stochastic Optimization: A Survey, İhsan Ömür Bucak, Volkan Uslan

Turkish Journal of Electrical Engineering and Computer Sciences

DNA and protein are the fundamental biological sequences. DNA is a fundamental molecule that plays a vital role in the processes of life. Proteins synthesized by DNA in a cell are the building blocks of every living organism. There is a variety of reasons behind the alignment of biological sequences. Biological sequence alignment helps to discover functional and structural similarity of sequences. Biologists work with these aligned sequences to construct phylogenetic trees, characterize protein families, and predict protein structure. Sequence alignment is an extremely promising field of research that is characterized by very high computational complexity. Stochastic optimization is needed …

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A Novel And Efficient Algorithm For Adaptive Filtering: Artificial Bee Colony Algorithm, Nurhan Karaboğa, Mehmet Bahadir Çeti̇nkaya Jan 2011

A Novel And Efficient Algorithm For Adaptive Filtering: Artificial Bee Colony Algorithm, Nurhan Karaboğa, Mehmet Bahadir Çeti̇nkaya

Turkish Journal of Electrical Engineering and Computer Sciences

The uni-modal error surfaces and intrinsic stable behaviors of adaptive finite impulse response (FIR) filters make gradient based algorithms very effective in the design of these filters. Gradient based design methods are well developed for the design of adaptive FIR filters and widely applied to the distinct areas such as noise cancellation, system identification and channel equalization. However, the studies on adaptive infinite impulse response (IIR) filters are not as common as adaptive FIR filters since the stability during the adaptation process may not be ensured in some applications, and the convergence to the optimal design is not always guaranteed …

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