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Significance Of Absorption Spectra For The Chemotaxonomic Characterization Of Pigmented Bacteria, Nuretti̇n Şahi̇n
Significance Of Absorption Spectra For The Chemotaxonomic Characterization Of Pigmented Bacteria, Nuretti̇n Şahi̇n
Turkish Journal of Biology
A method for characterizing pigmented bacteria based on the numerical analysis of their carotenoid absorption spectra was examined. To achieve this, some non-phototrophic pigmented bacteria that were isolated from various environments and closely related types of species were used. Bacterial carotenoid pigments were extracted with an acetone:methanol (7:2) mixture and the absorption spectra were determined. Data were normalized, and their first derivatives were analyzed using Ward clustering algorithms. Based on the spectral data, isolates were separated into 7 groups. Characterization based on derivative pigment spectral data showed good agreement statistically with biochemical characterization results. The Mantel test indicated that the …
Isolation And Identification Of Trichoderma Species From Different Habitats And Their Use For Bioconversion Of Solid Waste, Ahsanur Rahman, Most. Ferdousi Begum, Matiur Rahman, M. A. Bari, G.N.M. Illias, M. Firoz Alam
Isolation And Identification Of Trichoderma Species From Different Habitats And Their Use For Bioconversion Of Solid Waste, Ahsanur Rahman, Most. Ferdousi Begum, Matiur Rahman, M. A. Bari, G.N.M. Illias, M. Firoz Alam
Turkish Journal of Biology
The native population of Trichoderma species collected from different habitats was quantified and characterised. The identified strains are T. harzianum (IMI-392432, 392433, 392434); T. pseudokoningii (IMI-392431) and T. virens (IMI-392430). Out of five strains, T. harzianum was the most common in all of the habitats. Colony forming units (cfu's) of Trichoderma species varied significantly (P = 0.05) in different habitats and were positively correlated with the physico-chemical characteristics of the habitat. Trichoderma was found to have adapted to an acidic habitat. In testing for an efficient bioconversion agent, T. harzianum (IMI-392432) was found to be the most effective in kitchen …
Prevalence Of Thermoactinomyces Thalpophilus And T. Sacchari Strains With Biotechnological Potential At Hot Springs And Soils From West Anatolia In Turkey, Ataç Uzel, Eli̇f Esi̇n Hameş Kocabaş, Erdal Bedi̇r
Prevalence Of Thermoactinomyces Thalpophilus And T. Sacchari Strains With Biotechnological Potential At Hot Springs And Soils From West Anatolia In Turkey, Ataç Uzel, Eli̇f Esi̇n Hameş Kocabaş, Erdal Bedi̇r
Turkish Journal of Biology
Hot spring sediment and soil samples from West Anatolia in Turkey were investigated for the occurrence of thermophilic Actinomycetes. Isolation was done using Actinomycetes isolation agar (AIA), starch casein agar and glycerol yeast extract agar at 55 °C. Extracellular protease activity of the isolates were screened by using AIA plus 1% casein according to the hydrolysis zones surrounding the colonies. Antimicrobial activities of the isolates were also screened by using streaked plate method against a panel of test bacteria. Identification of the isolates was made by cultural, physiological characteristics and 16S rDNA sequence similarity. Sixty-seven thermophilic Actinomycetes isolates were classified …
Spectrum And Frequency Of Macromutations Induced In Chickpea (Cicer Arietinum L.), Aijaz A. Wani
Spectrum And Frequency Of Macromutations Induced In Chickpea (Cicer Arietinum L.), Aijaz A. Wani
Turkish Journal of Biology
The present investigation was undertaken to study the frequency and spectrum of morphological mutants induced by gamma rays and EMS in chickpea (Cicer arietinum L.). The seeds of 2 varieties of chickpea, Pusa-212 and Pusa-372, were treated with gamma rays (150 Gy, 200 Gy, 300 Gy, and 400 Gy), EMS (0.1%, 0.2%, 0.3%, and 0.4%) and combination treatments (200Gy+0.2%EMS, 300Gy+0.2%EMS, 200Gy+0.3%EMS, and 300 Gy+0.3%EMS). The M2 population was carefully screened for various viable macromutations. A wide spectrum of viable morphological mutations affecting almost all parts of the plant were isolated in the M2 generation. The most striking mutants isolated included …
Characterisation And Antimicrobial Activity Of Sophora Alopecuroides L. Var. Alopecuroides Alkaloid Extracts, Nurgün Küçükboyaci, Semi̇ha Özkan, Nezaket Adigüzel, Fatma Tosun
Characterisation And Antimicrobial Activity Of Sophora Alopecuroides L. Var. Alopecuroides Alkaloid Extracts, Nurgün Küçükboyaci, Semi̇ha Özkan, Nezaket Adigüzel, Fatma Tosun
Turkish Journal of Biology
The aerial parts and seeds of Sophora alopecuroides L. var. alopecuroides growing in Turkey were investigated for their alkaloid compositions and antimicrobial activities. The alkaloid extracts were analysed by capillary gas chromatography-mass spectrometry (GC-MS). The main components were identified as sophoridine (33.07%), matrine (24.03%), and sophocarpine (8.01%) in the aerial parts, and matrine (36.67%) and sophoridine (34.53%) in the seeds of the plant. The alkaloid extracts were also evaluated for their in vitro antibacterial and antifungal activities using microdilution techniques. The alkaloid extract of the aerial parts of S. alopecuroides var. alopecuroides presented significant activity against Staphylococcus aureus and Bacillus …
Levels Of Phenolic Compounds And Their Effects On Antioxidant Capacity Of Wild Vaccinium Arctostaphylos L. (Qare-Qat) Collected From Different Regions Of Iran, Tahereh Hasanloo, Roshanak Sepehrifar, Homa Hajimehdipoor
Levels Of Phenolic Compounds And Their Effects On Antioxidant Capacity Of Wild Vaccinium Arctostaphylos L. (Qare-Qat) Collected From Different Regions Of Iran, Tahereh Hasanloo, Roshanak Sepehrifar, Homa Hajimehdipoor
Turkish Journal of Biology
Antioxidant activities in the leaves and fruits of wild Vaccinium arctostaphylos (locally named Qare-Qat) from different regions of Iran were evaluated using the stable 1, 1-diphenyl-2-picrylhydrazyl free radical and ferric reducing/antioxidant power methods. Variations in antioxidant activity, total phenolic, anthocyanin, and flavonoid content in fruit samples among genotypes was much greater than the variation observed between growing seasons, indicating that genetics plays a more important role than growing season in V. arctostaphylos fruits. The data indicated that the fruits of the Kelardasht genotype had the highest total phenolic content [42.73 ± 1.5 mg gallic acid equivalents (GAE) g^{-1} DW], anthocyanin …
Testing The Putative Effect Of Dicer-Substrate Sirnas In Regulating Gene Expression At Transcriptional Level, Müge Kovancilar, Mehmet Nejat Dalay, Uğur Deli̇gezer
Testing The Putative Effect Of Dicer-Substrate Sirnas In Regulating Gene Expression At Transcriptional Level, Müge Kovancilar, Mehmet Nejat Dalay, Uğur Deli̇gezer
Turkish Journal of Biology
RNA interference (RNAi) pathway is a gene silencing process during which small double-stranded RNA (dsRNA) molecules trigger the degradation of homologous RNA targets. Small interfering RNAs (siRNAs) are the mediators of the RNAi that can be induced in vitro and in vivo by direct application of chemically synthesized siRNAs. Recently, promoter-targeted small non-coding RNAs have been described to be capable of regulating gene expression at the transcriptional level. In the present study we tested the hypothesis that Dicer-substrate siRNAs (D-siRNAs), which trigger gene silencing through intrinsic RNAi pathway and are therefore more potent in gene knockdown than traditionally used 21-23mer …
The Application Of Issr-Pcr To Determine The Genetic Relationship And Genetic Diversity Between Narrow Leaved Bluegrass (Poa Angustifolia) And Rough Bluegrass (Poa Trivialis) Accessions, Emi̇ne Arslan, Ahmet Tamkoç
The Application Of Issr-Pcr To Determine The Genetic Relationship And Genetic Diversity Between Narrow Leaved Bluegrass (Poa Angustifolia) And Rough Bluegrass (Poa Trivialis) Accessions, Emi̇ne Arslan, Ahmet Tamkoç
Turkish Journal of Biology
: The present study aimed to determine the genetic relationship between Poa angustifolia and Poa trivialis as well as intraspecies genetic diversity using inter simple sequence repeat (ISSR) markers. ISSR amplification was evaluated for its applicability to narrow leaved bluegrass and rough bluegrass accessions identification. A total of 401 bands, 363 of which were polymorphic (90.52%), were generated using selected 20 primers. Genetic similarity between accessions belonging to Poa species was estimated using Nei's genetic similarity and UPGMA (unweighted pair group method with arithmetic) cluster analysis was used to construct a dendrogram. UBC836 and M6 primers were observed to be …
Changes In The Hemolymph Total Protein Of Galleria Mellonella (Lepidoptera: Pyralidae) After Parasitism And Envenomation By Pimpla Turionellae (Hymenoptera: Ichneumonidae), Olga Sak, Ekrem Ergi̇n, Fevzi̇ Uçkan, David B. Rivers, Ayli̇n Er
Changes In The Hemolymph Total Protein Of Galleria Mellonella (Lepidoptera: Pyralidae) After Parasitism And Envenomation By Pimpla Turionellae (Hymenoptera: Ichneumonidae), Olga Sak, Ekrem Ergi̇n, Fevzi̇ Uçkan, David B. Rivers, Ayli̇n Er
Turkish Journal of Biology
Venom from the endoparasitoid Pimpla turionellae L. (Hymenoptera: Ichneumonidae) contains a mixture of biologically active components, which display potent paralytic, cytotoxic, and cytolytic effects towards hosts. Here, we further investigate if parasitism or envenomation by P. turionellae alters total protein of its host Galleria mellonella L. (Lepidoptera: Pyralidae). Various venom concentrations representing doses previously determined to yield host responses yet fall below the calculated LD99 were used for pupae and larvae. Parasitization was only assayed for host pupa since P. turionellae females normally parasitize host prepupae and pupae in nature. Hemolymph total protein concentration remained relatively steady at all doses …
In Vitro Antagonistic Activity Of Fungi Isolated From Sclerotia On Potato Tubers Against Rhizoctonia Solani, Erkol Demi̇rci̇, Eli̇f Dane, Cafer Eken
In Vitro Antagonistic Activity Of Fungi Isolated From Sclerotia On Potato Tubers Against Rhizoctonia Solani, Erkol Demi̇rci̇, Eli̇f Dane, Cafer Eken
Turkish Journal of Biology
Forty-five fungal isolates were obtained from sclerotia of Rhizoctonia solani on potato tubers in Erzurum, Turkey. The interaction between fungal isolates and R. solani was studied in dual culture technique. Some fungal isolates affected R. solani by antibiosis and/or parasitism. Results of the antagonism tests showed that Acremonium sp., Gliocladium viride, Paecilomyces marquandii, Paecilomyces sulphurellus, Penicillium camemberti, Penicillium expansum, Penicillium frequentans (ME-50), Penicillium nigricans, Penicillium olsonii, Penicillium phialosporum, Sporothrix sp. (MCY-4), Sporothrix schenckii, and Verticillium dahliae isolates produced an inhibition zone in front of the R. solani colony to a varying degree. Trichoderma harzianum isolates were able to overgrow the …
Seasonal Variations In Phytoplankton Composition And Biomass In A Small Lowland River-Lake System (Melen River, Turkey), Tülay Baykal, İlkay Açikgöz, Abel U. Udoh, Kazim Yildiz
Seasonal Variations In Phytoplankton Composition And Biomass In A Small Lowland River-Lake System (Melen River, Turkey), Tülay Baykal, İlkay Açikgöz, Abel U. Udoh, Kazim Yildiz
Turkish Journal of Biology
A series of studies were carried out to determine the succession and phytoplankton community of the Melen River in the Western Black Sea region of Turkey. The study was conducted at 6 stations at monthly intervals between May 2003 and April 2004. It was observed that the abundance and biovolume of phytoplankton were low in winter, though higher values were recorded in late spring and summer. Among the values noted, the spring peak was 534.38 × 10^5 ind. L^{-1} and 7384.8 mm^3 L^{-1} belonging to Peridinium sp. The most common diatom, Cyclostephanos dubius, was favoured by low discharge at stations …
Antibacterial Activity Of Bee Propolis Samples From Different Geographical Regions Of Turkey Against Two Foodborne Pathogens, Salmonella Enteritidis And Listeria Monocytogenes, Ayhan Temi̇z, Ayla Şener, Asli Özkök Tüylü, Kadri̇ye Sorkun, Beki̇r Sali̇h
Antibacterial Activity Of Bee Propolis Samples From Different Geographical Regions Of Turkey Against Two Foodborne Pathogens, Salmonella Enteritidis And Listeria Monocytogenes, Ayhan Temi̇z, Ayla Şener, Asli Özkök Tüylü, Kadri̇ye Sorkun, Beki̇r Sali̇h
Turkish Journal of Biology
The aim of the present study was to investigate the antibacterial activities of 25 propolis samples collected from various geographical regions of Turkey against 2 food-borne pathogens, Salmonella Enteritidis ATCC 13076 and Listeria monocytogenes ATCC 1462. The chemical compositions of ethyl alcohol extracts of the propolis (EEP) samples were determined by gas chromatography coupled to mass spectrometry. The main components of EEP samples were flavonoids, aromatic acid esters, aromatic alcohols, aromatic acids, aliphatic carboxylic acids, terpens, and aliphatic carboxylic acid esters. Antibacterial activities of the EEP samples were tested at 2 different dilutions of 1:10 and 1:100 (v/v). All EEP …
Influence Of Different Sterilization Methods On Callus Initiation And Production Of Pigmented Callus In Arnebia Densiflora Ledeb., Hati̇ce Çölgeçen, Ufuk Koca Çalişkan, Gülnur Toker
Influence Of Different Sterilization Methods On Callus Initiation And Production Of Pigmented Callus In Arnebia Densiflora Ledeb., Hati̇ce Çölgeçen, Ufuk Koca Çalişkan, Gülnur Toker
Turkish Journal of Biology
We analyzed the effects of sodium hypochlorite and Plant Preservative Mixture (PPM) on surface sterilization. We also examined the effects that the addition of an antibiotic-antimycotic solution to the culture medium had on callus induction. Explants were initially sterilized with different concentrations of sodium hypochlorite and cultured on MS media containing kinetin (0.29 \muM) and naphthalene acetic acid (NAA, 10 \muM). No calluses were produced, either because of contamination of the explants, or loss of explants as a result of the high levels of sodium hypochlorite. The application of PPM and antibiotics at different concentrations reduced contamination and led to …
The Interaction Between Renin-Angiotensin System And Sympathetic Nervous System In The Peripheral Vasculature Of Normal Sprague-Dawley Rats, Mohammed H. Abdulla, Munavvar A. Sattar, Nor A. Abdullah, Kolla Rl. Anand Swarup, Abdul Hye Khan, Edward J. Johns
The Interaction Between Renin-Angiotensin System And Sympathetic Nervous System In The Peripheral Vasculature Of Normal Sprague-Dawley Rats, Mohammed H. Abdulla, Munavvar A. Sattar, Nor A. Abdullah, Kolla Rl. Anand Swarup, Abdul Hye Khan, Edward J. Johns
Turkish Journal of Biology
To evaluate possible interactions between the renin-angiotensin system (RAS) and the sympathetic nervous system (SNS) in the systemic circulation upon the intravenous administration of angiotensin II and a set of adrenergic agonists in normal Sprague-Dawley (SD) rats. Rats were treated with carvedilol, a non-selective \beta- and selective \alpha_1-adrenoceptor blocker, in a dose of (5 mg/kg) orally for 7 days, and on day 8, the animals were pentobarbitone-anaesthetized and prepared for systemic hemodynamic study. Dose-response relationships in terms of elevation in the magnitude of the mean arterial blood pressure in response to intravenous injection of noradrenaline (NA), phenylephrine (PE), methoxamine (ME), …
Antioxidant And Antimicrobial Activity Of Turkish Endemic Sonchus Erzincanicus Extracts, Ahmet Mavi̇, Ni̇met Yi̇ği̇t, Demet Yi̇ği̇t, Ali̇ Kandemi̇r
Antioxidant And Antimicrobial Activity Of Turkish Endemic Sonchus Erzincanicus Extracts, Ahmet Mavi̇, Ni̇met Yi̇ği̇t, Demet Yi̇ği̇t, Ali̇ Kandemi̇r
Turkish Journal of Biology
Sonchus erzincanicus (Asteraceae) is a plant species that is endemic to Turkey and grows in Erzincan. Lipid peroxidation inhibition, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, and total phenolic content of the methanol and water extracts of the plant were determined. Antimicrobial activity of the extracts was also tested against 107 clinical isolates of human pathogenic microorganism strains belonging to Enterobacter aerogenes, Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans using the disc-diffusion method, and the minimal inhibition concentration (MIC) value of each active extract was determined. The extracts were observed to have antioxidant potential, although no better than …
An Entomopathogenic Bacterium, Pseudomonas Putida, From Leptinotarsa Decemlineata, Hacer Muratoğlu, Zi̇hni̇ Demi̇rbağ, Kazim Sezen
An Entomopathogenic Bacterium, Pseudomonas Putida, From Leptinotarsa Decemlineata, Hacer Muratoğlu, Zi̇hni̇ Demi̇rbağ, Kazim Sezen
Turkish Journal of Biology
The Colorado Potato Beetle (CPB), Leptinotarsa decemlineata (Say) (Col.: Chrysomelidae), is a pre-eminent pest on solanaceous crops worldwide, and much research has focused on the different components of its variable population dynamics. L. decemlineata has developed resistance to insecticides used for its control. Consequently, alternative methods are needed urgently for the control of this pest. In this study, in order to find a more effective and safer biological control agent against L. decemlineata, we isolated a new bacterial isolate (Ld4) from L. decemlineata, and tested it for insecticidal effects on L. decemlineata larvae. Also, the insecticidal effect of Ld4 was …
The Protective Effect Of Boric Acid On Aluminum-Induced Hepatotoxicity And Genotoxicity In Rats, Hasan Türkez, Fati̇me Geyi̇koğlu, Suat Çolak
The Protective Effect Of Boric Acid On Aluminum-Induced Hepatotoxicity And Genotoxicity In Rats, Hasan Türkez, Fati̇me Geyi̇koğlu, Suat Çolak
Turkish Journal of Biology
The efficacy of boric acid (BA) was examined on liver marker enzymes in aluminum (Al)-treated rats. Also, a liver micronucleus assay was performed to evaluate the genotoxicity in hepatocytes. With these aims, Sprague-Dawley rats were randomly separated into 10 groups of 5 animals. Aluminum chloride (5 mg/kg body weight (b.w.) AlCl3) and BA (3.25, 13, 36 and 58.5 mg/kg b.w.) alone were administered with injections to the experimental animals. Furthermore, the animals were also treated with Al for 4 consecutive days followed by BA exposure for 10 days. The rats were anesthetized after Al and BA injections and the levels …
Antagonistic Potential Of Marine Actinobacteria Against Fish And Shellfish Pathogens, Selvakumar Dharmaraj
Antagonistic Potential Of Marine Actinobacteria Against Fish And Shellfish Pathogens, Selvakumar Dharmaraj
Turkish Journal of Biology
A total of 94 marine actinobacterial isolates were found to be associated with 4 sponges: Callyspongia diffusa, Mycale mytilorum, Tedania anhelans, and Dysidea fragilis. Among the cultures 7 strains showed antagonism against fish and shellfish pathogens. Analysis of morphological, physiological, biochemical, and protein profile characteristics suggested that the actinobacterial strains belonged to the genus Streptomyces. The initial screening of the isolates by the spot inoculation method exhibited antibacterial activity against Aeromonas hydrophila. In vitro screening of the submerged culture extracts showed positive inhibition against the fish and shellfish pathogens Aeromonas hydrophila, Serratia sp., and Vibrio spp. The screening of bioactive …
Determining Mitotic Index In Peripheral Lymphocytes Of Welders Exposed To Metal Arc Welding Fumes, Ceylan Alakoç, Hali̇l Erhan Eroğlu
Determining Mitotic Index In Peripheral Lymphocytes Of Welders Exposed To Metal Arc Welding Fumes, Ceylan Alakoç, Hali̇l Erhan Eroğlu
Turkish Journal of Biology
Gas metal arc welding is a widely used method in a lot of industrial areas as it is cheap and produces high quality results. In the present study, peripheral blood lymphocytes of 23 welders and 25 non-exposed subjects were monitored for cytotoxicity. Information regarding the subjects' ages, smoking habits, alcohol consumption, duration of exposure, and medicine usage was recorded. According to the results, mitotic index (2.278 ± 1.325) of the welders was higher than that of those non-exposed (0.956 ± 0.616) (P < 0.01). There was no significant difference between mitotic index rates of smoking and non-smoking subjects. In contrast, there were significant differences between non-exposed subjects and welders for both smoking and non-smoking (P < 0.05). It was found that as the time of exposure to welding fumes increased so did the mitotic index rates (P < 0.05). Both a positive correlation in welders and a negative correlation in non-exposed subjects were observed between mitotic index frequency and age. In the light of the results obtained, it is advised that welders who work with gas metal arc welding be instructed and necessary protective measures be taken because of the risk caused by metal arc welding fumes.
Electrophoretic Analysis Of Genetic Diversity In Natural House Fly (Musca Domestica L.) Populations From The Western And Southern Coasts Of Turkey, Belgi̇n Göçmen Taşkin, Vatan Taşkin, Köksal Küçükakyüz
Electrophoretic Analysis Of Genetic Diversity In Natural House Fly (Musca Domestica L.) Populations From The Western And Southern Coasts Of Turkey, Belgi̇n Göçmen Taşkin, Vatan Taşkin, Köksal Küçükakyüz
Turkish Journal of Biology
In this study genetic variation was determined with isozyme analysis in 8 natural house fly (Musca domestica L.) populations from the western and southern coasts of Turkey, a part of the southern Palearctic region. For this purpose, 7 isozyme systems (ACP, AOX, CAT, HBDH, HXK, MDH, and SOD) were resolved using the native polyacrylamide gel electrophoresis (native-PAGE) technique. A total of 9 loci and 20 alleles were detected. The proportion of polymorphic loci in populations ranged from 44.44% to 66.67%. The overall mean number of effective alleles per locus (Ne) was 1.314 ± 0.454. The mean estimated expected heterozygosity (He) …
The Analgesic Effect Of The Ethanolic Extract Of Matricaria Aurea, Esam Qnais
The Analgesic Effect Of The Ethanolic Extract Of Matricaria Aurea, Esam Qnais
Turkish Journal of Biology
The analgesic effect of the ethanolic whole plant extract of Matricaria aurea L. (Asteraceae) was studied in rats using the cold water tail flick assay and in mice using the tail immersion, tail clip, acetic-acid-induced writhing, and formalin pain tests. The results showed dose-dependent and significant (P < 0.001) increases in pain threshold at 60 min post-treatment with doses of 100, 200, and 300 mg/kg of the extract in tail flick, tail immersion, and tail clip tests. The effects of the extract were significantly (P < 0.001) lower than those produced by morphine (10 mg/kg) in the same tests. The extract (100, 200, and 300 mg/kg) exhibited a dose-dependent inhibition of writhing and also showed a significant (P < 0.001) inhibition in both phases of the formalin pain test, but with a less intense effect in the first phase. The results indicate that the analgesic effect of M. aurea ethanolic extract is both centrally and peripherally mediated.
Total Phenolic Contents And Antioxidant Activities Of Prangos Lindl. (Umbelliferae) Species Growing In Konya Province (Turkey), Jehad Ahmed, Ayşegül Güvenç, Nurgün Küçükboyaci, Ayşe Baldemi̇r, Maksut Coşkun
Total Phenolic Contents And Antioxidant Activities Of Prangos Lindl. (Umbelliferae) Species Growing In Konya Province (Turkey), Jehad Ahmed, Ayşegül Güvenç, Nurgün Küçükboyaci, Ayşe Baldemi̇r, Maksut Coşkun
Turkish Journal of Biology
Prangos species are widely used as medicinal plants in Turkey, and 14 species of this genus grow naturally in Anatolia. In the present study, the phenolic contents and antioxidant activities of the water and methanol (MeOH) extracts obtained from the root, herb, and fruits of 4 species of Prangos (Prangos ferulacea, P. heyniae, P. meliocarpoides var. meliocarpoides, and P. uechtritzii) collected in Konya province were compared. The phenolic contents of the samples were determined using Folin-Ciocalteu's phenol reagent. Antioxidant activities of the extracts were studied by qualitative DPPH^. (1,1-diphenyl-2-picrylhydrazyl radical) assay to detect the free radical scavenging activity and by …
Sensitivity Of Cercospora Beticola Populations In Turkey To Flutriafol, Mancozeb, And Fentin Acetate, Aynur Tümbek, Pinar Özeren, Riza Kaya, Yakup Zekai̇ Katircioğlu, Sali̇h Maden
Sensitivity Of Cercospora Beticola Populations In Turkey To Flutriafol, Mancozeb, And Fentin Acetate, Aynur Tümbek, Pinar Özeren, Riza Kaya, Yakup Zekai̇ Katircioğlu, Sali̇h Maden
Turkish Journal of Agriculture and Forestry
The sensitivity of sugar beet leaf spot disease caused by Cercospora beticola to fungicides used in Turkey was determined using a mycelial growth assay in petri dishes with 100 fungal isolates. The isolates were obtained from samples collected from 6 sugar beet production areas in 2005 and 2006. Flutriafol, mancozeb, and fentin acetate were added to Aspergillus complete medium (ACM) at the rates of 0.0, 0.05, 0.1, 0.5, 1.0, 5.0, and 10.0 µg mL^{-1}, and then mycelial growth was measured. ED_{50} values of flutriafol for all the isolates from the sugar beet production areas ranged from 0.04 to >10.0 µg …
Can Triticale Be Used As A Companion Crop With Red Clover?, Zeki̇ Acar, Özlem Önal Aşci, Uğur Başaran, İlknur Ayan, Hani̇fe Mut
Can Triticale Be Used As A Companion Crop With Red Clover?, Zeki̇ Acar, Özlem Önal Aşci, Uğur Başaran, İlknur Ayan, Hani̇fe Mut
Turkish Journal of Agriculture and Forestry
The purpose of this research, carried out under irrigated conditions, was to determine the effects of sowing rate and harvest stage of triticale, used here as a companion plant, on hay yield of red clover and weed densities. The field studies, which were conducted as 2 separate experiments, continued over the 2004-2008 period. Each experiment continued for 3 years (Experiment I was carried out between 2004 and 2007, and Experiment II was carried out between 2005 and 2008). Red clover and triticale were sown together. Triticale was seeded at 200, 300, 500, and 650 seed m^{-2}. Plots were harvested when …