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Auxin-Mediated Growth Of Rice In Cadmium-Contaminated Soil, Hussna Farooq, Hafiz Naeem Asghar, Muhammad Yahya Khan, Muhammad Saleem, Zahir Ahmad Zahir
Auxin-Mediated Growth Of Rice In Cadmium-Contaminated Soil, Hussna Farooq, Hafiz Naeem Asghar, Muhammad Yahya Khan, Muhammad Saleem, Zahir Ahmad Zahir
Turkish Journal of Agriculture and Forestry
Pollution from heavy metals is a global problem that is very dangerous to the environment. Among the heavy metals, cadmium is receiving more and more attention because it is one of the most ecotoxic, making it very harmful for biological activity in soil, biodiversity, plant metabolism, and human and animal health. Phytohormones, produced by plants, control or regulate germination, growth, metabolism, or other physiological activities, and they can alleviate the toxic effects of heavy metals on plant growth. Auxin is the most abundant natural growth hormone, controlling apical dominance, tropism, elongation of shoots, and initiation of roots in plants. However, …
Assessment Of Fruit Characteristics And Genetic Variation Among Naturally Growingwild Fruit Elaeagnus Angustifolia Accessions, Aydin Uzun, Buket Çeli̇k, Turan Karadeni̇z, Kadi̇r Uğurtan Yilmaz, Cafer Altintaş
Assessment Of Fruit Characteristics And Genetic Variation Among Naturally Growingwild Fruit Elaeagnus Angustifolia Accessions, Aydin Uzun, Buket Çeli̇k, Turan Karadeni̇z, Kadi̇r Uğurtan Yilmaz, Cafer Altintaş
Turkish Journal of Agriculture and Forestry
Elaeagnus angustifolia L. is a deciduous wild-growing fruit species that plays significant roles in maintaining ecosystem functions in arid regions. In the present study, the fruit characteristics and genetic variations among 56 E. angustifolia accessions collected from the Central Anatolian region of Turkey were determined. The majority of the variations were observed in fruit characteristics. Results revealed that fruit weights varied between 0.59 g and 2.56 g, fruit lengths between 1.13 cm and 2.58 cm, fruit widths between 0.86 cm and 1.67 cm, fruit shape indexes between 0.52 and 0.92, and pedicle lengths between 1.95 mm and 7.74 mm. The …
Synthesis And Molecular Modeling Studies Of Naproxen-Based Acyl Hydrazone Derivatives, Tuğba Taşkin Tok, Özgün Özaşik, Deni̇z Sarigöl, Ayşe Uzgören Baran
Synthesis And Molecular Modeling Studies Of Naproxen-Based Acyl Hydrazone Derivatives, Tuğba Taşkin Tok, Özgün Özaşik, Deni̇z Sarigöl, Ayşe Uzgören Baran
Turkish Journal of Chemistry
A series of N-acylhydrazone derivatives (2a--2p) containing 6-methoxy-naphthalene and acylhydrazone moieties were synthesized in good yield using microwave irradiation and developed as potential COX-2 inhibitors. Furthermore, the interactions between COX-2 and the compounds were examined in detail by molecular modeling studies such as structure--activity relationship and molecular docking performed using Gaussian 09 and Discovery Studio 3.5. As a result, it was found that N-acylhydrazone compounds displayed a different mechanism than SC-558 as COX-2 inhibitor by binding to different active sites of the protein, COX-2. Compound 2c would be a good COX-2 inhibitor candidate for preclinical studies.
Synthesis And Characterization Of Substituted Benzimidazole Co(Ii), Fe(Ii), And Zn(Ii) Complexes And Structural Characterization Of Dichlorobis{1-[2-(1-Piperidinyl)Ethyl]-1h-Benzimidazole-_Kn^3} Zinc(Ii), Hasan Küçükbay, Ülkü Yilmaz, Mehmet Akkurt, Orhan Büyükgüngör
Synthesis And Characterization Of Substituted Benzimidazole Co(Ii), Fe(Ii), And Zn(Ii) Complexes And Structural Characterization Of Dichlorobis{1-[2-(1-Piperidinyl)Ethyl]-1h-Benzimidazole-_Kn^3} Zinc(Ii), Hasan Küçükbay, Ülkü Yilmaz, Mehmet Akkurt, Orhan Büyükgüngör
Turkish Journal of Chemistry
The Co(II), Fe(II), and Zn(II) complexes of 1-(3-phenyl)propylbenzimidazole (PPBI), 5-nitro-1-(3-phenyl) propylbenzimidazole (PPNBI), 1-[2-(4-morpholinyl)ethyl]benzimidazole (MEBI), 1-[2-(1-piperidinyl)ethyl]benzimidazole (PEBI), and 5-nitro-1-[2-(1-piperidinyl)ethyl]benzimidazole (PENBI) were synthesized and characterized by ^1H NMR, ^{13}C NMR, and elemental analyses. The magnitudes of the magnetic moments for paramagnetic complexes were between 4.07 and 5.11 B.M. Moreover, the crystal structure of dichlorobis{1-[2-(1-piperidinyl)ethyl]-1H-benzimidazole-_KN^3} zinc(II) was determined by single crystal X-ray diffraction.
Synthesis Of Tetrahydropyrimidinium Salts And Their In Situ Catalytic Activities Towards The Buchwald--Hartwig Amination Reaction Under Microwave Irradiation, Liangru Yang, Huanyu Bian, Wenpeng Mai, Pu Mao, Yongmei Xiao, Dong Wei, Lingbo Qu
Synthesis Of Tetrahydropyrimidinium Salts And Their In Situ Catalytic Activities Towards The Buchwald--Hartwig Amination Reaction Under Microwave Irradiation, Liangru Yang, Huanyu Bian, Wenpeng Mai, Pu Mao, Yongmei Xiao, Dong Wei, Lingbo Qu
Turkish Journal of Chemistry
A series of asymmetrical substituted tetrahydropyrimidinium salts and different kinds of bridged bis-tetrahydropyrimidinium salts were prepared through the quaterization of tetrahydropyrimidine or the dehydrogenation of hexahydropyrimidine. They were characterized and used as NHC precursors in the palladium catalyzed Buchwald--Hartwig amination reaction. The in situ formed catalytic system Pd(OAc)_2/tetrahydropyrimidinium and ^tBuOK catalyzed the amination of heteroaryl halides and heterocyclic amines effectively, producing the heterocyclic amine functionalized heteroaryl derivatives in high yields.
Revisiting The Biodesulfurization Capability Of Hyperthermophilic Archaeon Sulfolobus Solfataricus P2 Revealed Dbt Consumption By The Organism In An Oil/Water Two-Phase Liquid System At High Temperatures, Gökhan Gün, Yuda Yürüm, Gi̇zem Di̇nler Doğanay
Revisiting The Biodesulfurization Capability Of Hyperthermophilic Archaeon Sulfolobus Solfataricus P2 Revealed Dbt Consumption By The Organism In An Oil/Water Two-Phase Liquid System At High Temperatures, Gökhan Gün, Yuda Yürüm, Gi̇zem Di̇nler Doğanay
Turkish Journal of Chemistry
The ability of the hyperthermophilic archaeon Sulfolobus solfataricus P2 to grow on organic and inorganic sulfur sources was investigated. A sulfur-free mineral medium was employed with different sources of carbon. The results showed that inorganic sulfur sources display growth curve patterns significantly different from the curves obtained with organic sulfur sources. Solfataricus has the ability to utilize DBT and its derivatives, but it lacks BT utilization. Solfataricus} utilizes DBT at a rate of 1.23 \mu mol 2-HBP h^{-1} g DCW^{-1} even at 78 °C, at which DBT is known to be unstable. After enabling DBT stabilization using a two-phase culture …
Synthesis, Structural Characterization, And Antimicrobial Efficiency Of Sulfadiazine Azo-Azomethine Dyes And Their Bi-Homonuclear Uranyl Complexes For Chemotherapeutic Use, Abdalla M. Khedr, Fawaz A. Saad
Synthesis, Structural Characterization, And Antimicrobial Efficiency Of Sulfadiazine Azo-Azomethine Dyes And Their Bi-Homonuclear Uranyl Complexes For Chemotherapeutic Use, Abdalla M. Khedr, Fawaz A. Saad
Turkish Journal of Chemistry
Two sulfadiazine azo-azomethine dyes containing two active coordination centers and their bi-homonuclear UO_2(II)-complexes were synthesized for potential chemotherapeutic use. The ligands were prepared, starting from the coupling of sulfadiazine dizonium salt with acetylacetone, followed by condensation with ethylenediamine and 1,6-hexanediamine (HL^I and HL^{II}) using a modified literature procedure. The structures of the ligands and their UO_2(II)-complexes were elucidated by conventional and thermal gravimetric analyses, molar conductivity, magnetic susceptibility, and IR, UV-Vis, ^1H NMR, and mass spectra. The analytical and spectral data supported the binuclear formulation of the complexes with a 2:1 metal to ligand ratio and octahedral geometry. The molar …
Improvement Of Solubility Of Celecoxib By Inclusion In Mcm-41 Mesoporous Silica: Drug Loading And Release, Şahi̇ka Günaydin, Ayşen Yilmaz
Improvement Of Solubility Of Celecoxib By Inclusion In Mcm-41 Mesoporous Silica: Drug Loading And Release, Şahi̇ka Günaydin, Ayşen Yilmaz
Turkish Journal of Chemistry
Celecoxib is a poorly water-soluble nonsteroidal anti-inflammatory drug. Here we report four ordered mesoporous silica MCM-41 supports with different particle size, pore volume, and surface properties to investigate their loading capacity with celecoxib and their release abilities. Spherical MCM-41 mesoporous supports less than 50 nm in diameter were prepared and to compare the effect of the template removal process on morphology of samples, acid extraction and calcination methods were used. Moreover, nearly 500 nm sized rod-shaped MCM-41 mesoporous silica was obtained by changing the template concentration in preparation. Boron doping was performed to determine the effect of a heteroatom on …
Hplc Fluorescence Determination Of Ochratoxin A Utilizing A Double Internal Standard And Its Application To Poultry Feed, Muzaffer Tunçel, Eli̇f Mi̇ne Öncü Kaya, Ülkü Di̇lek Uysal, Tufan Güray
Hplc Fluorescence Determination Of Ochratoxin A Utilizing A Double Internal Standard And Its Application To Poultry Feed, Muzaffer Tunçel, Eli̇f Mi̇ne Öncü Kaya, Ülkü Di̇lek Uysal, Tufan Güray
Turkish Journal of Chemistry
A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. The analysis was performed in an octadecyl silane column using a solvent system [ACN:water:formic acid (50:50:1.25, v/v/v)] by isocratic elution. The flow rate and injection volume were 1 mL min^{-1} and 12 \mu L, respectively. Signals were detected at 278(\lambda_{ex})/315(\lambda_{em}) and 330(\lambda_{ex})/450(\lambda_{em}) nm between 0 and 8, and 8.01 and 20.0 min, respectively. The method was validated with precision, linearity, accuracy, limit of detection, limit of quantification, robustness, and …
Synthesis And Biological Evaluation Of A New Series Of 4-Alkoxy-2-Arylquinoline Derivatives As Potential Antituberculosis Agents, Gonca Tosun, Tayfun Arslan, Zeynep İskefi̇yeli̇, Murat Küçük, Şengül Alpay Karaoğlu, Nuretti̇n Yayli
Synthesis And Biological Evaluation Of A New Series Of 4-Alkoxy-2-Arylquinoline Derivatives As Potential Antituberculosis Agents, Gonca Tosun, Tayfun Arslan, Zeynep İskefi̇yeli̇, Murat Küçük, Şengül Alpay Karaoğlu, Nuretti̇n Yayli
Turkish Journal of Chemistry
Three new series of 33 quinolone compounds, 2-(2-, 3-, and 4-fluorophenyl)-4-O-alkyl(C$_{5-15})$quinolines (7a-k, 8a-k, and 9a-k), were synthesized from 2-(2-, 3-, and 4-fluorophenyl)-2,3-dihydroquinolin-4(1H)-one (4, 5, and 6) by the reaction of alkyl halides under basic conditions in DMF. The new compounds 7a-k, 8a-k, and 9a-k were synthesized from flavonones 4-6, which can be considered new precursors for quinoline synthesis through a one-step reaction. All the target compounds (7a-k, 8a-k, and 9a-k) were evaluated for their in vitro antimicrobial activity against nine test microorganisms. They showed the most activity against Mycobacterium smegmatis with minimum inhibitory concentrations (MIC) of 62.5-500 $\mu $g/mL, indicating …
New Tetrazolic Azo Dyes Linked To (Thio)Barbiturate And Electron-Rich Aromatics As Potential Antimicrobial Agents, Nader Noroozi Pesyan, Davoud Soleimani, Nima Hosseini Jazani
New Tetrazolic Azo Dyes Linked To (Thio)Barbiturate And Electron-Rich Aromatics As Potential Antimicrobial Agents, Nader Noroozi Pesyan, Davoud Soleimani, Nima Hosseini Jazani
Turkish Journal of Chemistry
A series of new tetrazolic azo dyes based on (thio)barbiturate and electron-rich aromatics were synthesized in excellent yield. The electron-donor and tetrazole ring moieties were linked by a $p$-phenylazo bridge and the structural characterizations were achieved by FT IR, $^{1}$H and $^{13}$C NMR, and UV-visible spectrometry. The antibacterial activity of the synthesized compounds was tested against gram-positive and gram-negative bacterial strains, namely \textit{Acinetobacter calcoaceticus} (ATCC23055), \textit{Escherichia coli} (ATCC2592), \textit{Pseudomonas aeruginosa} (ATCC27853), and \textit{Staphylococcus aureus} (ATCC25923). As a result, potential antimicrobial effects were seen for some of the synthesized compounds.
Spectrophotometric Determination Of Iron Species Using Ionic Liquid Ultrasound Assisted Dispersive Liquid--Liquid Microextraction, Alireza Bazmandegan, Ali Mohammad Haji Shabani, Sayessteh Dadfarnia, Mahboubeh Saeidi, Masoud Rohani Moghadam
Spectrophotometric Determination Of Iron Species Using Ionic Liquid Ultrasound Assisted Dispersive Liquid--Liquid Microextraction, Alireza Bazmandegan, Ali Mohammad Haji Shabani, Sayessteh Dadfarnia, Mahboubeh Saeidi, Masoud Rohani Moghadam
Turkish Journal of Chemistry
A simple and efficient method for speciation and determination of iron in different water samples was developed. The method is based on ionic liquid ultrasound assisted dispersive liquid--liquid microextraction (IL-USA-DLLME) followed by spectrophotometric determination. Fe(II) is complexed with 2,4,6-tri(2'-pyridyl)-l,3,5-triazine (TPTZ{)}, neutralized through ion pair formation with sodium dodecyl sulfate (SDS) and extracted into 1-hexyl-3-methylimidazolium hexafluorophosphate [C$_{6}$MIM][PF$_{6}$]. Total iron amount was determined after reduction of Fe(III) to Fe(II) with hydroxylamine hydrochloride. The concentration of Fe(III) was determined from the difference of concentration of total iron and Fe(II). The important parameters such as the type and volume of the extraction solvent, pH, …
After-Effect Of Long-Term Soil Management On Soil Respiration And Otherqualitative Parameters Under Prolonged Dry Soil Conditions, Dalia Feiziene, Dalia Janusauskaite, Virginijus Feiza, Agne Putramentaite, Ausra Sinkeviciene, Skaidre Suproniene, Vytautas Seibutis, Grazina Kadziene, Irena Deveikyte, Sigitas Lazauskas, Daiva Janusauskaite, Virmantas Povilaitis
After-Effect Of Long-Term Soil Management On Soil Respiration And Otherqualitative Parameters Under Prolonged Dry Soil Conditions, Dalia Feiziene, Dalia Janusauskaite, Virginijus Feiza, Agne Putramentaite, Ausra Sinkeviciene, Skaidre Suproniene, Vytautas Seibutis, Grazina Kadziene, Irena Deveikyte, Sigitas Lazauskas, Daiva Janusauskaite, Virmantas Povilaitis
Turkish Journal of Agriculture and Forestry
Climatic conditions of environmental zone Nemoral 2 of Europe are favorable for agricultural development. However, more frequent events of hot air-waves and prolonged droughts occurring as a consequence of climate change lead to soil moisture content reduction down to the plant wilting point. Dry soil conditions may have negative consequences for soil as a habitat. The goal of this study was to evaluate the cumulative after-effect of long-term conventional (CT) and no-tillage (NT) application in combination with or without crop residues on soil physicochemical properties, microbiological activity, and soil respiration (SR) under prolonged dry soil conditions. Long-term CT with residue …
Determination Of Some Biochemical Parameters Of Worker Honeybees (Apis Mellifera L.) Belonging To Different Age Groups, Ethem Akyol, Zeli̇ha Selamoğlu, Mehmet Fuat Gülhan
Determination Of Some Biochemical Parameters Of Worker Honeybees (Apis Mellifera L.) Belonging To Different Age Groups, Ethem Akyol, Zeli̇ha Selamoğlu, Mehmet Fuat Gülhan
Turkish Journal of Zoology
The catalase activity, total protein, and total RNA levels of worker bees of different age groups (4, 9, 15, 20, and 24 days old) within the same honeybee colony were studied. The catalase activities of group I (4 days), group II (9 days old), group III (15 days old), group IV (20 days old), and group V (24 days old) were 4.10 ± 0.59, 4.32 ± 0.57, 4.32 ± 0.57, 4.41 ± 0.49, and 4.47 ± 0.48 kU/g, respectively. There were significant differences in total protein and total RNA levels among the different age groups of workers. The calculated total …
The Ceratopogonidae (Insecta: Diptera) Fauna Of The Central Black Searegion In Turkey, Fethi̇ Turgut, Ali̇ Yavuz Kiliç
The Ceratopogonidae (Insecta: Diptera) Fauna Of The Central Black Searegion In Turkey, Fethi̇ Turgut, Ali̇ Yavuz Kiliç
Turkish Journal of Zoology
Within the context of this study, conducted in 2007 and 2008, 64 species of the genera Allohelea Kieffer, Alluaudomyia Kieffer, Atrichopogon Kieffer, Bezzia Kieffer, Brachypogon Kieffer, Culicoides Latreille, Dasyhelea Kieffer, Forcipomyia Meigen, Leptoconops Skuse, Palpomyia Meigen, and Stilobezzia Kieffer were reported in the Central Black Sea Region of Turkey. Among them, three genera (Allohelea, Alluaudomyia, and Brachypogon) and 26 species are new to the country's fauna.
Intelligent Text Classification System Based On Self-Administered Ontology, Manoj Manuja, Deepak Garg
Intelligent Text Classification System Based On Self-Administered Ontology, Manoj Manuja, Deepak Garg
Turkish Journal of Electrical Engineering and Computer Sciences
Over the last couple of decades, web classification has gradually transitioned from a syntax- to semantic-centered approach that classifies the text based on domain ontologies. These ontologies are either built manually or populated automatically using machine learning techniques. A prerequisite condition to build such systems is the availability of ontology, which may be either full-fledged domain ontology or a seed ontology that can be enriched automatically. This is a dependency condition for any given semantics-based text classification system. We share the details of a proof of concept of a web classification system that is self-governed in terms of ontology population …
Moving As A Whole: Multirobot Traveling Problem Constrained By Connectivity, Yun Wang, Cheng Hu
Moving As A Whole: Multirobot Traveling Problem Constrained By Connectivity, Yun Wang, Cheng Hu
Turkish Journal of Electrical Engineering and Computer Sciences
A multirobot system provides many advantages over a single robot. In certain situations, robots need to maintain global connectivity while proceeding through tasks such as traveling to spots of interest in an area. This paper formulates the problem of multiple robots traveling while constrained by connectivity and analyzes the limits of increase in total traveling distance (TTD) caused by connectivity constraints. A connection condition is proposed and proven, which can be used to direct the design of solutions. Two algorithms satisfying the connection condition, connected nearest neighbor (CNN) and bold Lin-Kernighan heuristic (B-LKH), are proposed to solve this problem, which …
A New Diploid Species Of Pilosella (Asteraceae) From Turkey, Vladimir Vladimirov, Kami̇l Çoşkunçelebi̇, Kit Tan
A New Diploid Species Of Pilosella (Asteraceae) From Turkey, Vladimir Vladimirov, Kami̇l Çoşkunçelebi̇, Kit Tan
Turkish Journal of Botany
Pilosella ilgazensis Vladimirov, Coşkunçelebi & Kit Tan, a new diploid (2n = 2x = 18) species from Ilgaz Mountain National Park, North Anatolia, Turkey, is described and illustrated. It grows in subalpine grassland and open Juniperus sibirica Burgsd. communities. Pilosella ilgazensis is morphologically intermediate between P. alpicola s.l., from the high mountains of Central and Southeast Europe, and the Euro-Asiatic Pilosella echioides s.l. The relationship of the species with other similar taxa is discussed. The name Hieracium leontocephalum Halácsy, from a morphologically similar taxon from the Balkan Peninsula, is lectotypified, and a new generic combination, Pilosella leontocephala (Halácsy) Vladimirov, Coşkunçelebi …
Pollen Morphology Of The Genus Alchemilla L. (Rosaceae) In Iran, Marzieh Beygom Faghir, Farideh Attar, Robabeh Shahi Shavvon, Atefeh Mehrmanesh
Pollen Morphology Of The Genus Alchemilla L. (Rosaceae) In Iran, Marzieh Beygom Faghir, Farideh Attar, Robabeh Shahi Shavvon, Atefeh Mehrmanesh
Turkish Journal of Botany
This paper reports the morphological characters of 18 Iranian species of the genus Alchemilla using light and scanning electron microscopy. The pollen grains are monad, radially symmetrical, isopolar, or subisopolar; small to medium in size; tri- and tetracolporate; rectangular to cylindrical (from equatorial view) and triangular to circular (from polar view) in outline; and prolate-spheroidal to subprolate and prolate in shape. The exine ornamentation is psilate and microechinate. Based on the exine sculpturing and microechinate distribution pattern, three main types, four subtypes, and two categories of pollen grains were recognized. We used cluster analysis and principal component analysis to determine …
Seed Micromorphology In Dactylorhiza Necker Ex Nevski (Orchidaceae) And Allied Genera, Roberto Gamarra, Pablo Galan, Henrik Aerenlund Pedersen, Emma Ortunez, Ernesto Sanz
Seed Micromorphology In Dactylorhiza Necker Ex Nevski (Orchidaceae) And Allied Genera, Roberto Gamarra, Pablo Galan, Henrik Aerenlund Pedersen, Emma Ortunez, Ernesto Sanz
Turkish Journal of Botany
Seeds of 21 taxa of the genera Dactylorhiza (incl. Coeloglossum), Gymnadenia (incl. Nigritella) and Pseudorchis were examined by light microscope and SEM. Qualitative and quantitative characters were analyzed. In Dactylorhiza, the seeds are fusiform, but some populations of D. viridis show clavate seeds. According to the ornamentation of the periclinal walls, 3 types of seeds are recognized in this genus. The considerable variation in the seed coat ornamentation pattern in the taxa belonging to majalis, maculata, and praetermissa groups of the genus Dactylorhiza is congruent with the genetic processes that occurred during the history of this genus. Gymnadenia shows clavate …
Lyophyllum Turcicum (Agaricomycetes: Lyophyllaceae), A New Species From Turkey, Ertuğrul Sesli̇, Alfredo Vizzini, Marco Contu
Lyophyllum Turcicum (Agaricomycetes: Lyophyllaceae), A New Species From Turkey, Ertuğrul Sesli̇, Alfredo Vizzini, Marco Contu
Turkish Journal of Botany
A new species, Lyophyllum turcicum, from the Kümbet plateau of the Dereli district in Giresun Province, Turkey, is described, taxonomically delimited, and illustrated based on morphological and molecular data. The new species belongs to a small group of species in the Lyophyllum sect. Difformia as traditionally circumscribed. Lyophyllum turcicum is easily distinguished mainly by the light tinges of the basidiomes, filiform-fusiform to cylindro-flexuose marginal cells, and elongate, ellipsoid spores.
Promotive Effect Of Exogenously Applied Thiourea On Key Physiological Parametersand Oxidative Defense Mechanism In Salt-Stressed Zea Mays L. Plants, Cengi̇z Kaya, Muhammad Ashraf, Osman Sönmez
Promotive Effect Of Exogenously Applied Thiourea On Key Physiological Parametersand Oxidative Defense Mechanism In Salt-Stressed Zea Mays L. Plants, Cengi̇z Kaya, Muhammad Ashraf, Osman Sönmez
Turkish Journal of Botany
A greenhouse experiment was conducted to examine the alleviating role of thiourea (TU) on antioxidants and some vital physiological attributes in salt-stressed plants of two maize cultivars. The maize cv. DK 5783 performed better than cv. Apex 836 in an initial experiment. Of the six TU levels used in the initial experiment, 400 and 500 mg L-1 were chosen for subsequent studies. The two cultivars were subjected to saline stress (100 mM NaCl) and two levels of TU were applied presowing or as foliage spray. Salt stress suppressed total biomass, maximum fluorescence yield (Fv/Fm), chlorophyll, and leaf water potential ($\Psi$w), …
Taxonomic And Nomenclatural Contributions To Pyrus L. (Rosaceae) From Turkey, Zübeyde Uğurlu Aydin, Ali̇ Aslan Dönmez
Taxonomic And Nomenclatural Contributions To Pyrus L. (Rosaceae) From Turkey, Zübeyde Uğurlu Aydin, Ali̇ Aslan Dönmez
Turkish Journal of Botany
This paper presents a taxonomic contribution to the genus Pyrus L. P. Georgica and P. Pseudosyriaca are reported from Turkey for the first time. The status of P. Pseudosyriaca is discussed and it is treated as a new variety of Pyrus syriaca. Notes on the chorology, morphological descriptions, figures, and taxonomy are provided. Moreover, P. Serikensis and P. Boissieriana are reduced to synonyms of P. Cordata. An endemic subspecies, P. Elaeagrifolia subsp. Kotschyana, is compared with the related species P. Elaeagrifolia and it is reassessed at the species level based on morphology and distribution. With these changes, Pyrus is represented …
Karyotype Analysis In Allium Roseum L. (Alliaceae) Using Fluorescent In Situ Hybridization Of Rdna Sites And Conventional Stainings, Arbi Guetat, Marcella Rosato, Josep A. Rosselló, Mohamed Boussaid
Karyotype Analysis In Allium Roseum L. (Alliaceae) Using Fluorescent In Situ Hybridization Of Rdna Sites And Conventional Stainings, Arbi Guetat, Marcella Rosato, Josep A. Rosselló, Mohamed Boussaid
Turkish Journal of Botany
In North Africa, Allium roseum L. Has been treated as a polymorphic species comprising 12 different taxa. More than 80 individuals in the Allium roseum complex were sampled from 20 populations at different localities in Tunisia and investigated karyologically. Basic chromosome number was confirmed as x = 8. Three cytotypes, diploid (2n = 2x = 16), triploid (2n = 3x = 24), and tetraploid (2n = 4x = 32), were found. Polyploidy was recorded for the first time for this species in Tunisia. Most of the populations were diploid (17 populations), whereas two populations were tetraploid and only one was …
Lower Devonian Trace Fossils And Their Paleoenvironmental Significance From The Western Yangtze Plate, South China, Li-Jun Zhang, Zhao Zhao
Lower Devonian Trace Fossils And Their Paleoenvironmental Significance From The Western Yangtze Plate, South China, Li-Jun Zhang, Zhao Zhao
Turkish Journal of Earth Sciences
Abundant and diverse trace fossils occur in the littoral-neritic sediments recording an Early Devonian transgression in South China. The well-exposed Ganxi section is located in the Longmen Mountain 100 km northwest of Chendu, Sichuan. The Lower Devonian strata are dominated by sandstones, siltstones, muddy shales, limestones, bioclastic limestones, and muddy limestones. About thirteen ichnogenera were systematically described, including Arenicolites, ?Balanoglossites, Chondrites, Cylindrichnus, Diplocraterion, Planolites, Palaeophycus, Phycodes, Rhizocorallium, Rusophycus, Skolithos, Thalassinoides, and Zoophycos. Six trace fossil associations under different sedimentary environments have been recognized as follows: the Skolithos and Diplocraterion-Skolithos associations mainly consist of domichnia derived from a high-energy zone of …
Changes In Enzymatic And Nonenzymatic Antioxidant Defense Mechanisms Of Canola Seedlings At Different Drought Stress And Nitrogen Levels, Seyed Ahmad Kalantar Ahmadi, Ali Ebadi, Sodabeh Jahanbakhsh, Jahanfar Daneshian, Seyed Ataolah Siadat
Changes In Enzymatic And Nonenzymatic Antioxidant Defense Mechanisms Of Canola Seedlings At Different Drought Stress And Nitrogen Levels, Seyed Ahmad Kalantar Ahmadi, Ali Ebadi, Sodabeh Jahanbakhsh, Jahanfar Daneshian, Seyed Ataolah Siadat
Turkish Journal of Agriculture and Forestry
To evaluate the responses of canola seedlings to different levels of drought stress and nitrogen at different growth stages, a factorial experiment was conducted in a completely randomized design with three replications at the experimental greenhouse of Mohaghegh Ardabili University in 2013. Treatments included three levels of drought stress (30%, 50%, and 70% of FC) and five levels of nitrogen (control, based on soil test results; 25% less than the recommended level; 50% less than the recommended level; 25% more than the recommended level; and 50% more than the recommended level). The recommended level of nitrogen, based on soil test …
Silicon-Mediated Oxidative Stress Tolerance And Genetic Variability In Rice(Oryza Sativa L.) Grown Under Combined Stress Of Salinity And Boron Toxicity, Muhammad Ansar Farooq, Zulfiqar Ahmad Saqib, Javaid Akhtar
Silicon-Mediated Oxidative Stress Tolerance And Genetic Variability In Rice(Oryza Sativa L.) Grown Under Combined Stress Of Salinity And Boron Toxicity, Muhammad Ansar Farooq, Zulfiqar Ahmad Saqib, Javaid Akhtar
Turkish Journal of Agriculture and Forestry
The benefits of silicon (Si) in improving crop fitness by biotic and abiotic stress resistance are widely reported. However, investigations about its protective mechanisms for plants facing multiple stresses are very limited. Two contrasting rice cultivars, KS-282 (salt-tolerant) and IRRI-6 (salt-sensitive), were grown in a pot experiment to study the interrelation between Si supplementation (0 and 150 mg kg-1) and boron (B) toxicity (0 and 2.5 mg kg-1) under salinity stress with emphasis on growth response, mineral contents, physiology, and enzymatic antioxidant system response. The results revealed that adverse growth conditions, particularly the combined stress of salinity and B toxicity, …
A Comparative Performance Evaluation Of Various Approaches For Liver Segmentation From Spir Images, Evgi̇n Göçeri̇, Mehmet Zübeyi̇r Ünlü, Oğuz Di̇cle
A Comparative Performance Evaluation Of Various Approaches For Liver Segmentation From Spir Images, Evgi̇n Göçeri̇, Mehmet Zübeyi̇r Ünlü, Oğuz Di̇cle
Turkish Journal of Electrical Engineering and Computer Sciences
Developing a robust method for liver segmentation from magnetic resonance images is a challenging task because of the similar intensity values between adjacent organs, the geometrically complex liver structure, and injection of contrast media. Most importantly, a high anatomical variability of a healthy or diseased liver is a major challenge in defining the exact boundaries of the liver. Several artifacts of pulsation, motion, and partial volume effects are also among the variety of factors that make automatic liver segmentation difficult. In this paper, we present an overview of liver segmentation methods in magnetic resonance images and show comparative results of …