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2011

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Acid Proteinase Enzyme Activity In Candida Albicans Strains: A Comparison Of Spectrophotometry And Plate Methods, Sevi̇m Akçağlar, Beyza Ener, Okan Töre Jan 2011

Acid Proteinase Enzyme Activity In Candida Albicans Strains: A Comparison Of Spectrophotometry And Plate Methods, Sevi̇m Akçağlar, Beyza Ener, Okan Töre

Turkish Journal of Biology

In recent years, the incidence of fungal infections has been rising all over the world. Although the amount of research in the field of pathogenic fungi has also increased, there is still a need for studies on fungal virulence. In this investigation, we focused on testing bloodstream-identified Candida albicans in experimental in vitro virulence assays. The proteinase enzyme activities of 30 C. albicans strains isolated from the bloodstream and sterile body fluids were investigated (15 colonizations, 15 infections). The spectrophotometric and plate methods were used to determine proteinase activity. The correlations between the 2 methods were compared. This study indicates …

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Characterization Of Poly Phenol Oxidase In Two In Vitro Regenerated Cultivars Of Mucuna: Mucuna Pruriens L. And Mucuna Prurita H., Raghavendra Sathyanarayana, Vadlapudi Kumar, Chapeyil Kumaran Ramesh, Mahadevappa Parmesha, Mahaboob Habeebulla Moinuddin Khan Jan 2011

Characterization Of Poly Phenol Oxidase In Two In Vitro Regenerated Cultivars Of Mucuna: Mucuna Pruriens L. And Mucuna Prurita H., Raghavendra Sathyanarayana, Vadlapudi Kumar, Chapeyil Kumaran Ramesh, Mahadevappa Parmesha, Mahaboob Habeebulla Moinuddin Khan

Turkish Journal of Biology

Polyphenol oxidases (PPOs EC 1.14.18.1) were isolated from Mucuna pruriens and Mucuna prurita and confirmed as tyrosinases involved in L-DOPA production. PPOs were extracted by using a 0.05 M phosphate buffer, pH 7.0. The purified enzyme was resolved into a single band by PAGE, the enzyme was confirmed as PPO by activity staining, and SDS-PAGE analysis revealed that the purified PPO of both the species is a tetramer. Substrate specificity experiments were carried out with catechol, L-DOPA, L-tyrosine, and p-cresol. Of these, catechol was evaluated as the most suitable substrate based on the determined K_{m} and V_{max} values. The optimum …

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In Vitro Propagation Of Diyarbakır Watermelons And Comparison Of Direct-Seeded And Transplanted Watermelon, Veysi̇ Okumuş, Vedat Pi̇ri̇nç, Ahmet Onay, Davut Başaran Jan 2011

In Vitro Propagation Of Diyarbakır Watermelons And Comparison Of Direct-Seeded And Transplanted Watermelon, Veysi̇ Okumuş, Vedat Pi̇ri̇nç, Ahmet Onay, Davut Başaran

Turkish Journal of Biology

A rapid protocol using shoot tip explants for micropropagation of Diyarbakır watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] types Sürme, Beyazkış and Karakış was achieved. Shoot tips from 5-day-old in vitro germinated seedlings were cultured on shoot regeneration medium for 3 weeks. The effects of the different concentrations of benzyl adenine (BA) and carbohydrate types on shoot proliferation were examined. The results confirmed that a range of 0.5-1.0 mg/L of BA was almost equally effective in promoting the shoot length of cultures in the 3 genotypes. Sucrose, in the presence of BA, was superior to other carbohydrates for the 3 …

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Antioxidant Capacity Of Juice From Different Papaya (Carica Papaya L.) Cultivars Grown Under Greenhouse Conditions In Turkey, Aysun Özkan, Hami̇de Gübbük, Esma Güneş, Ayşe Erdoğan Jan 2011

Antioxidant Capacity Of Juice From Different Papaya (Carica Papaya L.) Cultivars Grown Under Greenhouse Conditions In Turkey, Aysun Özkan, Hami̇de Gübbük, Esma Güneş, Ayşe Erdoğan

Turkish Journal of Biology

The fruits of Carica papaya L. (Caricaceae) are valuable as food and are also used in traditional medicine. The present study was designed to assess the antioxidant potential of the juices of 3 papaya cultivars (PCJ): Sunrise Solo, Red Lady, and Tainung. The antioxidant capacity of PCJ obtained from fully ripened fruit was determined by the following methods: scavenging of the free radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), reducing power assay, scavenging of superoxide radicals, 2-deoxyribose oxidation assay, and thiocyanate assay. Total phenolic content (TPC) of PCJ was determined by the Folin-Ciocalteu method. In the DPPH assay (IC_{50} values), the effect of Sunrise …

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Chemical Composition And Nutritional Value Of A Wild Edible Ectomycorrhizal Mushroom, Tricholoma Anatolicum, Erbi̇l Kalmiş, Hasan Yildiz, Bülent Ergönül, Fati̇h Kalyoncu, Mehmet Hali̇l Solak Jan 2011

Chemical Composition And Nutritional Value Of A Wild Edible Ectomycorrhizal Mushroom, Tricholoma Anatolicum, Erbi̇l Kalmiş, Hasan Yildiz, Bülent Ergönül, Fati̇h Kalyoncu, Mehmet Hali̇l Solak

Turkish Journal of Biology

The chemical composition and nutritional value of a wild edible ectomycorrhizal mushroom from southwestern Anatolia, Tricholoma anatolicum, were analyzed. Moisture, crude oil, protein, ash, total carbohydrate content, and mineral composition of the mushrooms studied, including Fe, Na, K, Zn, Cu, Ca, Cd, and Pb, were determined. The energy values of the samples were also calculated. The analyses were conducted during the 3 different growing stages of the mushrooms: mycelium, young fruiting bodies, and mature fruiting bodies. The highest values for moisture and crude oil contents were found to be in the mycelium, ash, and carbohydrate content of young fruiting bodies. …

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Biological Characterization Of Iranian Walnut (Juglans Regia) Leaves, Reza Sharafati Chaleshtori, Farhad Sharafati Chaleshtori, Mahmoud Rafieian Jan 2011

Biological Characterization Of Iranian Walnut (Juglans Regia) Leaves, Reza Sharafati Chaleshtori, Farhad Sharafati Chaleshtori, Mahmoud Rafieian

Turkish Journal of Biology

In recent years, emphasis has been placed on the use of natural materials in the control and treatment of various infections, as some chemically synthesized drugs have undesirable side effects. In this study, the ethanol extract of Iranian walnut leaves was examined for antibacterial activities on Streptococcus mutans, Streptococcus salivarius, Streptococcus sanguinis, and Actinomyces viscosus using the microdilution method. Total phenols, flavonoids, and flavonols were also determined colorimetrically. The minimum inhibitory concentrations (MIC) for ethanolic extract ranged between 15.6 and 187.5 mg/mL and minimum bactericidal concentrations (MBC) ranged between 31.25 and 250 mg/mL. Total phenols were 410 ± 14.43 mg/g …

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Determination Of Volatile Compounds Of Pine Honeys, Si̇bel Si̇li̇ci̇ Jan 2011

Determination Of Volatile Compounds Of Pine Honeys, Si̇bel Si̇li̇ci̇

Turkish Journal of Biology

The volatile compounds of 13 Turkish pine (Pinus brutia Ten.) honey samples were characterized by solid phase microextraction (SPME) analysis, followed by gas chromatography-mass spectrometry (GC-MS) analysis. A total of 42 volatile compounds were identified, but volatile compounds such as nonana1, benzene, 4-hexen-3-ol, alpha-pinene, and 2-heptanone were recognized to be specific floral origin markers of the pine honey. The SPME extraction method was proposed as an alternative way to carry out pollen analysis for floral source detection, especially for products such as pine honey, by characterization of honeydew elements.

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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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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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Investigation Of Legionella Pneumophila And Free Living Amoebas In The Domestic Hot Water Systems In İstanbul, Di̇lara Meryem Burak, Zuhal Zeybek Jan 2011

Investigation Of Legionella Pneumophila And Free Living Amoebas In The Domestic Hot Water Systems In İstanbul, Di̇lara Meryem Burak, Zuhal Zeybek

Turkish Journal of Biology

Legionella pneumophila (L. pneumophila), known to cause legionnaires' disease, has been found in various aquatic environments and man-made water systems. Free living amoebas (FLAs) live in the same environments and can cause infections such as encephalitis, keratitis. Moreover, FLAs play a major role in L. pneumophila transmission. In the present study, the presence of L. pneumophila and FLAs was examined in water and swab samples obtained from shower heads (hot water) in 61 houses in İstanbul. Nonnutrient agar (NNA) was used for isolation of FLAs in all samples and buffered charcoal yeast extract (BCYE) agar with addition of glycine, vancomycine, …

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Detection Of Prokaryotic Microbial Communities Of Çamaltı Saltern, Turkey, By Fluorescein In Situ Hybridization And Real-Time Pcr, Mehmet Burçi̇n Mutlu, Kiymet Güven Jan 2011

Detection Of Prokaryotic Microbial Communities Of Çamaltı Saltern, Turkey, By Fluorescein In Situ Hybridization And Real-Time Pcr, Mehmet Burçi̇n Mutlu, Kiymet Güven

Turkish Journal of Biology

Knowledge of the functions, interactions, and diversity of extremely halophilic microorganisms mostly comes from the results of studies performed in different salterns throughout the world. As model habitats, salterns allow the comparison of different techniques used for qualitative and quantitative analysis of halophilic communities in these hypersaline environments. Çamaltı Saltern is the biggest coastal solar saltern located on the Aegean coast of Turkey, and it produces most of the salt consumed in the country. In the present study, detection of prokaryotic communities of the Çamaltı Saltern was performed using 2 culture-independent methods. Real-time polymerase chain reaction (RT-PCR) and fluorescein in …

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Production, Purification, And Characterization Of \Alpha-Amylase By Bacillus Subtilis And Its Mutant Derivates, Eli̇f Demi̇rkan Jan 2011

Production, Purification, And Characterization Of \Alpha-Amylase By Bacillus Subtilis And Its Mutant Derivates, Eli̇f Demi̇rkan

Turkish Journal of Biology

The effects of various carbon and nitrogen sources on production of \alpha-amylase by Bacillus subtilis and its mutant derivates were investigated. The maximum production of \alpha-amylase by all strains was obtained in the presence of mesoinositol as the carbon source. There was no more significant increase in enzyme yield in the case of the supplementation of nitrogen sources, whereas malt extract and tryptone were preferred nitrogen sources for amylase production by Bacillus subtilis and mutant U 2-6 strain, respectively. \alpha-Amylases of B. subtilis and its mutant strain (EBUE 5-3) were purified through a series of steps, and characterized. The optimum …

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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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Indirect Somatic Embryogenesis And Shoot Organogenesis From Cotyledonary Leaf Segments Of Digitalis Lamarckii Ivan., An Endemic Medicinal Species, Sandeep K. Verma, Bahti̇yar Buhara Yücesan, Songül Gürel, Ekrem Gürel Jan 2011

Indirect Somatic Embryogenesis And Shoot Organogenesis From Cotyledonary Leaf Segments Of Digitalis Lamarckii Ivan., An Endemic Medicinal Species, Sandeep K. Verma, Bahti̇yar Buhara Yücesan, Songül Gürel, Ekrem Gürel

Turkish Journal of Biology

This study describes, for the first time, an in vitro protocol for the development of somatic embryos and shoots from a callus derived from cotyledonary leaf segments excised from 3-week-old in vitro-germinated seedlings of Digitalis lamarckii Ivan. (dwarf foxglove), an endemic medicinal species of Turkey. The embryogenic callus was induced on Murashige and Skoog (MS) medium containing 0.54 \muM \mu-naphthalene acetic acid (NAA) and 2.22 \muM 6-benzylaminopurine (BAP). Somatic embryos developed readily when the embryogenic callus was transferred to MS medium containing BAP (4.44 or 8.87 \muM) alone or BAP combined with NAA (1.34, 2.69, or 5.37 \muM). The most …

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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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Effect Of Exogenously Applied Spermidine On Growth And Physiology Of Citrus Rootstock Troyer Citrange Under Saline Conditions, Muhammad Akbar Anjum Jan 2011

Effect Of Exogenously Applied Spermidine On Growth And Physiology Of Citrus Rootstock Troyer Citrange Under Saline Conditions, Muhammad Akbar Anjum

Turkish Journal of Agriculture and Forestry

The aim of this study was to assess the effects of spermidine (Spd) on ameliorating adverse effects of salinity in Troyer citrange seedlings. For this purpose, 6-month-old, uniform-sized seedlings of Troyer citrange were transplanted to plastic containers containing Hoagland nutrient solution. Addition of 75 mM NaCl into the nutrient solution reduced the plant growth, leaf chlorophyll content, chlorophyll fluorescence yield (Fv/Fm), net photosynthetic rate, respiration rate, and total Spd, N, and Ca^{2+} + Mg^{2+} contents of the leaves. It increased the leaf proline, total putrescine (Put), total spermine (Spm), Na^+, and Cl^- contents of the leaves. Addition of Spd (0.1 …

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Micropropagation Of The Apricot (Prunus Armeniaca L.) Cv. Hacıhaliloğlu By Means Of Single Node Culture, Hakan Yildirim, Ahmet Onay, Engi̇n Ti̇lkat, Zafer Aktürk Jan 2011

Micropropagation Of The Apricot (Prunus Armeniaca L.) Cv. Hacıhaliloğlu By Means Of Single Node Culture, Hakan Yildirim, Ahmet Onay, Engi̇n Ti̇lkat, Zafer Aktürk

Turkish Journal of Agriculture and Forestry

Hacıhaliloğlu is one of the most widely cultivated apricot (Prunus armeniaca L.) cultivars in Turkey. It produces fruit of excellent quality and is consumed both fresh and dried. In this study several factors affecting in vitro culture, rapid proliferation, rooting, and acclimatization of the apricot cultivar Hacıhaliloğlu were examined. During this study significant differences in harvesting dates were observed, with the month of May being noted as the best time to examine the in vitro culture of Hacıhaliloğlu. The effects of the cytokinin 6-benzylaminopurine (BA), kinetin (Kin), and thidiazuron (TDZ) were evaluated individually, and different concentrations of BA were also …

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The Use Of Artificial Neural Networks For Forecasting The Monthly Mean Soil Temperatures In Adana, Turkey, Mehmet Bi̇lgi̇li̇ Jan 2011

The Use Of Artificial Neural Networks For Forecasting The Monthly Mean Soil Temperatures In Adana, Turkey, Mehmet Bi̇lgi̇li̇

Turkish Journal of Agriculture and Forestry

The objective of this paper was to develop an artificial neural network (ANN) model in order to predict monthly mean soil temperature for the present month by using various previous monthly mean meteorological variables. For this purpose, the measured soil temperature and other meteorological data between the years of 2000 and 2007 at Adana meteorological station were used. The soil temperatures were measured at depths of 5, 10, 20, 50, and 100 cm below the ground level by the Turkish State Meteorological Service (TSMS). A 3-layer feed-forward artificial neural network structure was constructed and a back-propagation algorithm was used for …

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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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The Relationships Of Some Traits In Turkish Winter Bread Wheat Landraces, Mevlüt Akçura Jan 2011

The Relationships Of Some Traits In Turkish Winter Bread Wheat Landraces, Mevlüt Akçura

Turkish Journal of Agriculture and Forestry

In this study, 42 bread wheat pure lines obtained from 340 landraces, collected from 35 provinces of 7 regions in Turkey, and 7 modern bread wheat cultivars were evaluated under rainfed conditions in Konya, in 2005-2006 and 2006-2007 growing seasons. Experiments were conducted in a 7 × 7 lattice design in 3 replicates. Both genotype-traits (GT) biplot analysis and path analysis were used to investigate the relationships between grain yield and 12 traits. Applying both types of analyses to the multiple traits data revealed that GT biplot graphically displayed the interrelationships among traits (breeding objectives), identified traits that are positively …

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The Investigation Of Antimicrobial Activity Of Thyme And Oregano Essential Oils, Bülent Çeti̇n, Songül Çakmakçi, Ramazan Çakmakçi Jan 2011

The Investigation Of Antimicrobial Activity Of Thyme And Oregano Essential Oils, Bülent Çeti̇n, Songül Çakmakçi, Ramazan Çakmakçi

Turkish Journal of Agriculture and Forestry

The aim of this study is to investigate in-vitro antimicrobial effects of the essential oils from oregano (Origanum acutidens and Origanum rotundifolium) and thyme (Thymus sipyleus subsp. sipyleus var. rosulans). The chemical composition and antimicrobial attributes of the essential oils obtained from the aerial parts of the plants, of which there were 3 Lamiaceae species, have been studied. A total of 43 microorganisms, including 26 bacteria, 14 fungi, and 3 yeasts species, have been studied by using disc-diffusion (DD) and minimal inhibition concentration (MIC) methods. Mean inhibition zones and MIC values of bacterial strains varied from 8 and 72 mm …

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