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Articles 1 - 30 of 298
Full-Text Articles in Life Sciences
Identification Of Advantages Of Maize-Legume Intercropping Over Solitary Cropping Through Competition Indices In The East Mediterranean Region, Şaban Yilmaz, Mehmet Atak, Mustafa Erayman
Identification Of Advantages Of Maize-Legume Intercropping Over Solitary Cropping Through Competition Indices In The East Mediterranean Region, Şaban Yilmaz, Mehmet Atak, Mustafa Erayman
Turkish Journal of Agriculture and Forestry
Alternate planting combinations of maize (Zea mays L.) with common bean (Phaseolus vulgaris L.) or cowpea (Vigna sinensis L.) were compared with the solitary planting of each crop during 2003 and 2004 under the East Mediterranean conditions in Turkey. The experiment comprised 15 treatments; sole planting of maize (71,500 plant ha^{-1}), sole planting of common bean (285,750 plant ha^{-1}) and cowpea (285,750 plant ha^{-1}), and 2 different planting patterns (1- and 2-row plantings) with 6 maize-legumes intercropping series, 50:50, 67:50, and 100:50, respectively, using randomized complete block design with 3 replications. Evaluation of the planting patterns was performed on basis …
Herbaceous Plant Cover Establishment In A Barren Materials Quarry, Nikolaos Arambatzis, Kitikidou Kyriaki
Herbaceous Plant Cover Establishment In A Barren Materials Quarry, Nikolaos Arambatzis, Kitikidou Kyriaki
Turkish Journal of Botany
The ability to establish cover using grass and legume species without any soil preparation was studied in a barren materials quarry. The biodiversity indexes (Simpson) during the growing season as well as the vegetation cover and composition were measured. The results showed that the established species had a satisfactory cover (up to 87.5%). This means that we can achieve significant soil rehabilitation after mining using herbaceous plant cover and reduce the cost of rehabilitation by cutting the expenses of soil preparation.
Estimating The Effect Of Controlled Drainage On Soil Salinity And Irrigation Efficiency In The Harran Plain Using Saltmod, İdri̇s Bahçeci̇, Recep Çakir, A. Suat Nacar, Pinar Bahçeci̇
Estimating The Effect Of Controlled Drainage On Soil Salinity And Irrigation Efficiency In The Harran Plain Using Saltmod, İdri̇s Bahçeci̇, Recep Çakir, A. Suat Nacar, Pinar Bahçeci̇
Turkish Journal of Agriculture and Forestry
Soil salinity and water logging, as well as water scarcity, are the most common problems limiting irrigated agriculture crop production in southeast Turkey. Thus, this study was conducted in order to predict the effect of drainage control factors on irrigation efficiency, irrigation sufficiency, root zone salinity, and drain discharge using SaltMod simulation. Investigations were conducted in the Harran Plain, also known as the Fertile Crescent or Upper Mesopotamia. High crop evapotranspiration rates and deep water table levels have led to visible increases in irrigation water requirements in the region. Therefore, the level of the water table appears to be a …
Carbon Mineralization Of Ceratonia Siliqua L. Soils Under Different Temperature And Humidity Conditions, Emel Zengi̇n, Hüsni̇ye Aka Sağliker, Cengi̇z Darici
Carbon Mineralization Of Ceratonia Siliqua L. Soils Under Different Temperature And Humidity Conditions, Emel Zengi̇n, Hüsni̇ye Aka Sağliker, Cengi̇z Darici
Turkish Journal of Botany
The aim of this study was to determine how carbon (C) mineralization of carob (Ceratonia siliqua L., Fabaceae) soils are affected by different temperatures (23 °C and 28 °C) and humidity [field capacity (FC), 80% and 60% of their field capacity] conditions in the laboratory. The carob soils were taken from Çukurova University campus in the eastern Mediterranean region of Turkey. C mineralization of all soils was determined using CO_{2} respiration method. The microbial activity increased together with temperature increases. The microbial activity in the soils humidified at the field capacity and 60% of it was statistically lower compared to …
The Determination Of The Shelf Life And Some Nutritional Components Of Gilthead Seabream (Sparus Aurata L., 1758) After Cold And Hot Smoking, Şengül Bi̇lgi̇n, Mustafa Ünlüsayin, Levent İzci̇, Ali̇ Günlü
The Determination Of The Shelf Life And Some Nutritional Components Of Gilthead Seabream (Sparus Aurata L., 1758) After Cold And Hot Smoking, Şengül Bi̇lgi̇n, Mustafa Ünlüsayin, Levent İzci̇, Ali̇ Günlü
Turkish Journal of Veterinary & Animal Sciences
This study aimed to determine the shelf life, as well as chemical and microbiological quality of gilthead seabream (Sparus aurata L., 1758) prepared by 2 different methods of smoking (hot smoking and cold smoking). The effects of hot and cold smoking on the chemical composition and microbial load of gilthead seabream, as well as organoleptic analysis of the smoked product were investigated. Significant (P < 0.05) differences were found in the chemical composition of fresh and smoked seabream. The panelists liked the hot smoked fish more than the cold smoked fish, according to sensory analysis results. Changes in pH, thiobarbituric acid (TBA), and total volatile basic nitrogen (TVB-N) values were significant (P < 0.05) during storage at 4 °C. Microbiological analysis results demonstrated that the smoking techniques reduced the microbial content of the fish, whereas microbial content increased during storage. The smoking methods tested had a small effect on the level of vitamin D_3 in gilthead seabream.
Seasonal Variation Of Vitamin A And Beta-Carotene Levels In Ghezel Sheep, Gholamreza Afshari, A. Hasanpour, H. Haghpanah, Bahram Amoughli-Tabrizi
Seasonal Variation Of Vitamin A And Beta-Carotene Levels In Ghezel Sheep, Gholamreza Afshari, A. Hasanpour, H. Haghpanah, Bahram Amoughli-Tabrizi
Turkish Journal of Veterinary & Animal Sciences
The present study was conducted to investigate the variations in blood serum and hepatic levels of vitamin A and b-carotene in Ghezel sheep throughout the year. From 1000 sheep aged 1-5 years, blood and liver samples were collected before and after slaughter. The levels of vitamin A and \beta-carotene in both samples were determined spectrophotometrically. The results showed significant differences between summer and winter values (P < 0.05), but no differences were found between the sexes (P > 0.05). There were significant correlations between the vitamin A levels in serum and the liver (P < 0.05). Due to low levels of vitamin A and \beta -carotene in Ghezel sheep during the winter, supplementary feeding of vitamin A is recommended during this season.
Apparent Nutrient Digestibility Of Balanced Diets With Soy Bean Extract Or Meat And Bone Meal In The Nile Tilapia (Oreochromis Niloticus L.) Infected With Vibrio Anguillarum, Kenan Engi̇n, Ferbal Özkan
Apparent Nutrient Digestibility Of Balanced Diets With Soy Bean Extract Or Meat And Bone Meal In The Nile Tilapia (Oreochromis Niloticus L.) Infected With Vibrio Anguillarum, Kenan Engi̇n, Ferbal Özkan
Turkish Journal of Veterinary & Animal Sciences
Nile tilapia, Oreochromis niloticus L., infected with Vibrio anguillarum or not infected were fed balanced diets containing vegetal (solvent extracted soy bean meal (SBM)) or animal (meat and bone meal (MBM)) protein sources in order to demonstrate the apparent nutrient and energy digestibility. Regardless of protein sources in the diets, feed intake was lower in the infected group. Apparent nutrient (AD_{DM} and AD_{CP}) and energy digestibility (AD_{kJ}) values of Nile tilapia fed the SBM diet were significantly better (P < 0.05) than those fed the CONT and MBM diets and changed little between the measurement days in both groups (non-infected and infected). Although no visible symptoms associated with vibriosis were evident on either the skin or internal organs, the significantly lower (P < 0.05) AD_{DM}, AD_{CP}, and AD_{kJ} values obtained between day 1 and 10 (specifically on days 3 and 10) in the infected group fed the CONT and MBM diets might have implicated the pathogenicity of the bacteria. Further research concentrating on higher amounts of solvent extracted soy bean and meat and bone meal, different environmental conditions and doses of infection with V. anguillarum and immune response parameters including physiological and cellular stress responses is needed in order to identify the overall apparent nutrient digestibility of plant and animal protein sources in Nile tilapia infected with V. anguillarum.
A Bicistronic Dna Vaccine Containing Gene Of Fmdv And Bovine Ifn-\Alpha Can Prime Humoral And Cellular Immune Responses Of Guinea Pigs, Huichen Guo, Shiqi Sun, Jiangtao Ma, Zaixin Liu, Xiangtao Liu, Qingge Xie
A Bicistronic Dna Vaccine Containing Gene Of Fmdv And Bovine Ifn-\Alpha Can Prime Humoral And Cellular Immune Responses Of Guinea Pigs, Huichen Guo, Shiqi Sun, Jiangtao Ma, Zaixin Liu, Xiangtao Liu, Qingge Xie
Turkish Journal of Veterinary & Animal Sciences
The study was conducted to evaluate the immunogenicity and protective efficacy of a DNA vaccine against foot-and-mouth disease virus (FMDV). Genes encoding the P1, 2A, 3C of FMDV O/China99 and bovine IFN-\alpha were cloned into pcDNA3.1 (+) expression vector under CMV promoter and FMDV IRES control, respectively. The recombinant plasmids were administered to guinea pigs by intramuscular injection with mono- or bicistronic expression plasmids and aurintricarboxylic acid (ATA). After 2 sequential vaccinations with plasmid DNA, all of guinea pigs were challenged with 100 ID_{50} FMDV O/China99. Anti-FMDV antibodies were detected by ELISA and neutralization assay, and the phenotyping of T-cell …
The Effects Of Vitamin E On The Antioxidant System, Egg Production, And Egg Quality In Heat Stressed Laying Hens, Hasret Yardi̇bi̇, Gülhan Türkay Hoştürk
The Effects Of Vitamin E On The Antioxidant System, Egg Production, And Egg Quality In Heat Stressed Laying Hens, Hasret Yardi̇bi̇, Gülhan Türkay Hoştürk
Turkish Journal of Veterinary & Animal Sciences
An experiment was carried out to investigate the effect of vitamin E on the metabolic impact of heat stress in hens. The study included 150 Leghorn laying hens, which were assigned to 2 groups and initially subjected to the same environmental conditions. Diets were based on standard layer rations with 30, 80, or 105 mg of vitamin E/kg. All birds were kept in 45% relative humidity (RH) and at a room temperature of 21 °C for first 3 weeks for adaptation. In the fourth week the temperature and RH were increased to 35 °C and 65%, respectively, in the experimental …
Prevalence And Antibiotic Resistance Of Listeria Spp. Isolated From Ready-To-Eat Foods In Ankara, Ufuk Tansel Şi̇reli̇, Ali̇ Gücükoğlu
Prevalence And Antibiotic Resistance Of Listeria Spp. Isolated From Ready-To-Eat Foods In Ankara, Ufuk Tansel Şi̇reli̇, Ali̇ Gücükoğlu
Turkish Journal of Veterinary & Animal Sciences
In this study the presence of Listeria spp. is tested in 100 ready-to-eat food samples purchased from different stores and traditional food shops in the province of Ankara. The tested materials were 20 each of the following: mayonnaise based salad, kadınbudu köfte (fried meatball), fried liver, rice stuffed mussel, and green salad. Microbiological analyzes showed that 13 of 100 salad samples (13%) were contaminated with Listeria spp. while 10 of 100 salad samples (10%) were contaminated with Listeria monocytogenes. Among these, 4 of 20 mayonnaise based salad samples (20%), 1 of 20 fried liver (5%), 1 of 20 rice stuffed …
Circadian Variations Of Thyroid Hormone Levels Of Nonpregnant Uniparous Fat-Tailed Iranian Ewes In Summer, Saeed Nazifi, Mahdi Saeb, Mahdi Hasankhani, Maryam Ansari-Lari, Narjes Ghafari, Fatemeh Hasanshahi
Circadian Variations Of Thyroid Hormone Levels Of Nonpregnant Uniparous Fat-Tailed Iranian Ewes In Summer, Saeed Nazifi, Mahdi Saeb, Mahdi Hasankhani, Maryam Ansari-Lari, Narjes Ghafari, Fatemeh Hasanshahi
Turkish Journal of Veterinary & Animal Sciences
Circadian variations in serum triiodothyronine (T_3), thyroxine (T_4), free triiodothyronine (fT_3), and free thyroxine (fT_4) levels were investigated in Iranian ewes. For that purpose, blood samples were collected from the jugular veins of 15 adult clinically healthy Iranian nonpregnant uniparous ewes every 6 h (0600, 1200, 1800, and 0000) during 6 days in summer with a mean ambient temperature of 40 °C. Serum T_3, T_4, fT_3, and fT_4 were measured by radioimmunoassay. There were statistically significant differences in thyroid hormone concentrations (T_3, T_4, fT_3, and fT_4) at different hours of the day. The results revealed that serum T_3, T_4, fT_3, …
Clinico-Pathological Studies On Avian Encephalomyelitis In Shiraz, Iran, Keramat Asasi, Amjad Farzinpour, Azizollah Khodakaram Tafti
Clinico-Pathological Studies On Avian Encephalomyelitis In Shiraz, Iran, Keramat Asasi, Amjad Farzinpour, Azizollah Khodakaram Tafti
Turkish Journal of Veterinary & Animal Sciences
Avian encephalomyelitis virus (AEV) is an important pathogen of poultry and is classified as a member of picornaviridae. Nearly all chicken flocks eventually become infected with the virus, but the incidence of clinical disease is very low unless a breeder flock is not vaccinated and becomes infected after the commencement of egg production. This report describes an outbreak of avian encephalomyelitis (AE) in broiler chicken farms around Shiraz, Iran. This survey included 60,000 birds (18-23 days of age), with 5% mortality. Characteristic clinical symptoms including ataxia, tremor of the head, and stretching of the legs were seen. Pathologically, lesions in …
Genetic Parameters Of Residual Energy Intake And Its Correlations With Other Traits In Holstein Dairy Cattle, Pouya Zamani, Seied Reza Miraei Ashtiani, Hosein Mohammadi
Genetic Parameters Of Residual Energy Intake And Its Correlations With Other Traits In Holstein Dairy Cattle, Pouya Zamani, Seied Reza Miraei Ashtiani, Hosein Mohammadi
Turkish Journal of Veterinary & Animal Sciences
Residual energy intake (REI) or residual feed intake (RFI), defined as the difference between actual energy intake, is predicted on the basis of requirements for maintenance, milk production, and body weight change of an animal. Genetic variation of REI and its relationships with dry matter intake, milk yield, fat corrected milk yield and milk fat, and protein yields was investigated using 3503 monthly records collected from 906 Holstein lactating cows. Variance components were estimated using univariate and multivariate animal models with the derivative-free approach of restricted maximum likelihood algorithm, fitting animal models with fixed effects of herd-year-season, parity number and …
Prediction Of Postpubertal Reproductive Potential According To Prepubertal Body Weight, Testicular Size, And Testosterone Concentration Using Multiple Regression Analysis In Kıvırcık Ram Lambs, Özkan Elmaz, Serdal Di̇kmen, Ümi̇t Ci̇ri̇t, Hidir Demi̇r
Prediction Of Postpubertal Reproductive Potential According To Prepubertal Body Weight, Testicular Size, And Testosterone Concentration Using Multiple Regression Analysis In Kıvırcık Ram Lambs, Özkan Elmaz, Serdal Di̇kmen, Ümi̇t Ci̇ri̇t, Hidir Demi̇r
Turkish Journal of Veterinary & Animal Sciences
The relationship between the prepubertal body weight, testicular size, testosterone concentration, and postpubertal reproductive function was investigated in Kıvırcık ram lambs. The body weight, testicular size, and testosterone concentration were measured every 20 days between 60 and 420 days of age. Semen was collected from the ram lambs at 7, 8, 9, 10, 11, 12, 13 and 14 months of age. Data obtained were analyzed by best subsets regression model. We determined that body weight, scrotal circumference, testicular length, and testosterone levels in the early prepubertal period (days 80, 100, and 120), when combined with each other, allow the determination …
Surfactant Proteins A And D In The Seminal Plasma Of Stallions, Ayhan Ata, Orhan Kankavi̇, M.Aki̇f Çi̇ftçi̇oğlu
Surfactant Proteins A And D In The Seminal Plasma Of Stallions, Ayhan Ata, Orhan Kankavi̇, M.Aki̇f Çi̇ftçi̇oğlu
Turkish Journal of Veterinary & Animal Sciences
We have previously shown that surfactant protein (SP)-A and SP-D are present in the stallion´s genital system. The aim of the present study was to evaluate the expression and presence of SP-A and SP-D in the seminal plasma and accessory sex glands of stallions. We characterized further the SP-A and SP-D in the seminal plasma of stallions by western blotting and immunohistochemically in accessory sex glands. On one-dimensional SDS-PAGE electrophoresis and western blots, bands for SP-A (34 kDa) and SP-D (43 kDa) in seminal plasma and accessory sex gland tissue extracts were detected. The similarity between biochemical properties (relative molecular …
Cryosurgical Treatment Of Anal Sac Fistulae In Dogs, Mehmet Sağlam, Ümi̇t Kaya
Cryosurgical Treatment Of Anal Sac Fistulae In Dogs, Mehmet Sağlam, Ümi̇t Kaya
Turkish Journal of Veterinary & Animal Sciences
Seven dogs of different breed, age, and sex that were diagnosed with anal sac fistulae upon clinical examination constituted the study material. Sedation for the procedure was maintained by means of xylazine hydrochloride administered intramuscularly. The patients were placed in the lateral recumbency position for the insertion into the fistulae of an appropriate probe, selected according to the lesion. Rapid cooling and spontaneous thawing were performed. This procedure was performed twice consecutively. The cooling temperature was adjusted to between -30 and -50 °C. The lesion healed completely between weeks 3 and 6 following the demarcation of necrotic tissue and growth …
Production Losses Due To Endemic Foot-And-Mouth Disease In Cattle In Turkey, Berri̇n Şentürk, Cengi̇z Yalçin
Production Losses Due To Endemic Foot-And-Mouth Disease In Cattle In Turkey, Berri̇n Şentürk, Cengi̇z Yalçin
Turkish Journal of Veterinary & Animal Sciences
This research paper is aimed at estimating foot-and-mouth disease (FMD)-induced production losses in individual dairy and fattening cattle in Turkey. The data used were obtained from a Delphi Expert Opinion Survey. The weighted average FMD-induced financial losses for all breeds were estimated to be $294/head for a milking cow, $152/head for a dairy heifer and $197/head for beef cattle. However, the amount of financial loss varied across different breeds, ages, and sexes. The study findings suggest that culling Holstein breed cows, beef cattle, and Holstein and cross breed female calves, as soon as they have an FMD infection, would be …
Uterine And Ovarian Metastasis Of Transmissible Venereal Tumor In A Bitch, Ayhan Baştan, Duygu Baki̇ Acar, Mehmet Cengi̇z
Uterine And Ovarian Metastasis Of Transmissible Venereal Tumor In A Bitch, Ayhan Baştan, Duygu Baki̇ Acar, Mehmet Cengi̇z
Turkish Journal of Veterinary & Animal Sciences
In this case report, metastasis of a transmissible venereal tumor (TVT) to the uterus and ovaries is presented. A 7-year-old female boxer dog with hemorrhagic vulvar discharge and a vaginal mass was brought to Ankara University Faculty of Veterinary Medicine, Clinics of Gynecology and Obstetrics. TVT was diagnosed by clinical findings and cytologic examination. Multifocal nodules in the uterus and enlargements of the uterine wall were detected by ultrasonographic examination. Ovariohysterectomy was performed because of uterine pathology. Histopathologic examination of the uterus and ovarium showed that the multifocal masses in the uterus and ovaries originated from vaginal TVT.
Plant Growth Promoting Properties Of Rhizobacteria Isolated From Wheat And Pea Grown In Loamy Sand Soil, Dilfuza Egamberdieva
Plant Growth Promoting Properties Of Rhizobacteria Isolated From Wheat And Pea Grown In Loamy Sand Soil, Dilfuza Egamberdieva
Turkish Journal of Biology
Microbes are important catalysts to regulate functional properties of terrestrial ecosystems. In this study, rhizosphere and phyllosphere bacteria were isolated from wheat and peas and examined for their plant growth promoting properties. The effects of bacterial inoculants on the growth of peas and wheat were studied in a series of pot experiments using loamy sand soil. The results showed that the colonisation of bacteria was higher in the rhizosphere as compared to the phyllosphere of both plants. Bacterial strains were identified as Pseudomonas, Bacillus, Kocuria, and Microbacterium, and Cellulomonas species. The response of wheat and peas when inoculated with bacteria …
In Vitro Antimicrobial Activity Of Salvadora Persica L. Extracts Against Some Isolated Oral Pathogens In Iraq, Firas A. Al-Bayati, Khudir D. Sulaiman
In Vitro Antimicrobial Activity Of Salvadora Persica L. Extracts Against Some Isolated Oral Pathogens In Iraq, Firas A. Al-Bayati, Khudir D. Sulaiman
Turkish Journal of Biology
Aqueous and methanol extracts of Salvadora persica L., a plant used in Iraq for oral hygiene, was investigated for its antimicrobial activities against 7 isolated oral pathogens: Staphylococcus aureus, Streptococcus mutans, Streptococcus faecalis, Streptococcus pyogenis, Lactobacillus acidophilus, Pseudomonas aeruginosa, and Candida albicans using disc diffusion and micro-well dilution assays. According to both antimicrobial assays the aqueous extract inhibited all isolated microorganisms, especially the Streptococcus species, and was more efficient than the methanol extract, which was resisted by Lacto. acidophilus and Ps. aeruginosa. The strongest antibacterial activity was observed using the aqueous extract against Strep. faecalis (zone of inhibition: 22.3 mm; …
Antioxidant Activities Of Iranian Corn Silk, Mohammad Ali Ebrahimzadeh, Fereshteh Pourmorad, Samira Hafezi
Antioxidant Activities Of Iranian Corn Silk, Mohammad Ali Ebrahimzadeh, Fereshteh Pourmorad, Samira Hafezi
Turkish Journal of Biology
Traditionally corn silk (CS) has been used as diuretic, antilithiasic, uricosuric, and antiseptic. It is used for the treatment of edema as well as for cystitis, gout, kidney stones, nephritis, and prostatitis. In the present study, the antioxidant properties of ethanol-water extract from CS were estimated by different methods. Also phenol and flavonoid content of the extract were measured by Folin Ciocalteu and AlCl_3 assays. CS extract contained a significant amount of phenol and flavonoids. The percentage of DPPH radical scavenged by CS extract was 92.6 at a concentration of 1.6 mg ml^{-1}. IC_{50} of the extract and the standard …
Improvement Of The Nutritional Value Of Soybean [Glycine Max (L) Merr.] Seed With Alteration In Protein Subunits Of Glycinin (11s Globulin) And \Beta-Conglycinin (7s Globulin), Behzad Kaviani, Ardashir Kharabian
Improvement Of The Nutritional Value Of Soybean [Glycine Max (L) Merr.] Seed With Alteration In Protein Subunits Of Glycinin (11s Globulin) And \Beta-Conglycinin (7s Globulin), Behzad Kaviani, Ardashir Kharabian
Turkish Journal of Biology
Protein quality in soybean seeds is strongly influenced by nutritional conditions. Glycinin (11S globulin) and \beta-conglycinin (7S globulin) are the 2 main proteins in soybean seeds. Protein quality of glycinin (11S) is higher than that of \beta-conglycinin (7S), due to the presence of higher amounts of s-containing amino acids (methionine and cysteine) in glycinin than \beta-conglycinin. Of the amino acids in glycinin, 3%-4.5% are methionine and cysteine but these important amino acids are not found in \beta-conglycinin (especially \beta-subunit). Pot studies were conducted with soybean [Glycine max (L) Merr.] grown under various levels of KCl and CaHPO4 and the effects …
Evaluation Of Antioxidant And Antimicrobial Activity Of Seaweed (Sargassum Sp.) Extract: A Study On Inhibition Of Glutathione-S-Transferase Activity, Jayanta Kumar Patra, Sakti Kanta Rath, Karmabeer Jena, Vijaya Kumar Rathod, Hrudayanath Thatoi
Evaluation Of Antioxidant And Antimicrobial Activity Of Seaweed (Sargassum Sp.) Extract: A Study On Inhibition Of Glutathione-S-Transferase Activity, Jayanta Kumar Patra, Sakti Kanta Rath, Karmabeer Jena, Vijaya Kumar Rathod, Hrudayanath Thatoi
Turkish Journal of Biology
In the present study, the free radical scavenging potentials (DPPH radical and hydroxyl radical), inhibition of lipid peroxidation, and glutathione-S-transferase and antimicrobial properties of Sargassum sp. extract were investigated. The tested extract exhibited a dose-dependent free radical scavenging action against DPPH radical and hydroxyl radical and antimicrobial activity. In addition, inhibition of lipid peroxidation and glutathione-S-transferase activities were also observed. The overall results have established that this seaweed could be used against several diseases and, in the food processing industry, to preserve foods.
A Comparative Study On Colchicine Application Methods In Obtaining Doubled Haploids Of Tobacco (Nicotiana Tabacum L.), Betül Bürün, Ülkü Emi̇roğlu
A Comparative Study On Colchicine Application Methods In Obtaining Doubled Haploids Of Tobacco (Nicotiana Tabacum L.), Betül Bürün, Ülkü Emi̇roğlu
Turkish Journal of Biology
In order to obtain androgenic doubled haploids of tobacco (Nicotiana tabacum cv. Karabağlar 6265) colchicine was applied at 3 different stages of anther culture. Before culture, anthers were treated with 0.4% aqueous solution of colchicine for 0, 2, 4, 6, 8, 10, and 12 h. Culture response of anthers decreased as the treatment duration increased (except 12 h) and the highest diploidization of 29.7% was obtained with 6 h. During culture, when macroscopic embryoids appeared in dehisced anthers, they were wrapt up in sterile cotton saturated with 0.2% colchicine for 3 days and transferred to fresh medium. This application resulted …
Androgenesis In Anther Culture Of Lithuanian Spring Barley (Hordeum Vulgare L.) And Potato (Solanum Tuberosum L.) Cultivars, Rita Asakaviciute
Androgenesis In Anther Culture Of Lithuanian Spring Barley (Hordeum Vulgare L.) And Potato (Solanum Tuberosum L.) Cultivars, Rita Asakaviciute
Turkish Journal of Biology
An anther culture method was used for the production of doubled haploids (DHs) in Lithuanian barley and potato cultivars that were directly regenerated from embryoids (Caredda´s method) were applied to determine androgenic potential according to the green regenerant yield and other morphogenetic factors. Green DH regenerants were obtained in 3 Lithuanian spring barley cultivars (´Aidas´, ´Alsa´, and ´Auksiniai´) out of 10 studied. The highest rate of embryoid formation was determined in cv. ´Auksiniai 3´, representing 580.0 embryoids per 100 responding anthers. The potato cultivar ´Nida´ was superior in terms of the rate of responding anthers (17.4%). The highest rate of …
Gamma Ray- And Ems-Induced Bold-Seeded High-Yielding Mutants In Chickpea (Cicer Arietinum L.), Aijaz A. Wani, Mohammad Anis
Gamma Ray- And Ems-Induced Bold-Seeded High-Yielding Mutants In Chickpea (Cicer Arietinum L.), Aijaz A. Wani, Mohammad Anis
Turkish Journal of Biology
Three bold-seeded high-yielding mutants were isolated from the M_2 progeny of chickpea var. Pusa-212, viz. Pusa-212 A (200 Gy), Pusa-212 C (400 Gy), and Pusa-212 F (300 Gy + 0.2% EMS). Data on various quantitative traits, such as plant height, number of branches per plant, number of pods per plant, number of seeds per pod, 100-seed weight (g), seed yield (g) per plant, and protein content (%), were recorded for all 3 mutants in the M3 generation. The mutants were morphologically quite distinct, as compared to the control and to each other. The most notable change was in seed size …
The Antioxidant Activity Of Some Medicinal Plants, Prateek Kumar Jain, Veerasamy Ravichandran, Simant Sharma, Ram. K. Agrawal
The Antioxidant Activity Of Some Medicinal Plants, Prateek Kumar Jain, Veerasamy Ravichandran, Simant Sharma, Ram. K. Agrawal
Turkish Journal of Biology
The antioxidant properties of the methanol extracts of 10 medicinal plants were evaluated with the DPPH (1,1-diphenyl-2-picryl hydrazyl) test, hydroxyl scavenging test, and lipid peroxidation assay. The methanol extract of Emblica officinalis was the most active according to the DPPH test, with an IC_{50} value of 7.92 ± 0.1 \mug/ml, followed by Asparagus racemosus, with an IC_{50} value of 9.28 ± 0.2 \mug/ml. The minimum free radical scavenging activity was shown by Zingiber officinale, with an IC_{50} value of 44.48 ± 1.8 \mug/ml. The hydroxyl radical scavenging activity of the methanolic extracts of various plants was as follows: Asparagus racemosus …
Antioxidant Activity Of Some Common Plants, Nooman A. Khalaf, Ashok K. Shakya, Atif Al-Othman, Zaha El-Agbar, Husni Farah
Antioxidant Activity Of Some Common Plants, Nooman A. Khalaf, Ashok K. Shakya, Atif Al-Othman, Zaha El-Agbar, Husni Farah
Turkish Journal of Biology
The methanolic crude extracts of some commonly used medicinal plants were screened for their free radical scavenging properties using ascorbic acid as standard antioxidant. Free radical scavenging activity was evaluated using 1,1-diphenyl-2-picryl-hydrazyl (DPPH) free radical. The overall antioxidant activity of green tea (Camellia sinensis Linn.) was the strongest, followed in descending order by black tea (Camellia sinensis Linn.), Eugenia caryophyllus (Spreng.) Bullock and Harrison, Piper cubeba Linn., Zingiber officinale Roscoe and Piper nigrum Linn. Trigonella foenum graecum Linn. and Elettaria cardamomum (Linn.) Maton showed weak free radical scavenging activity with the DPPH method. All the methanolic extracts exhibited antioxidant activity …
The Effect Of Hyperosmotic Stress And Nitrogen Starvation On Growth And \Beta-Galactosidase Synthesis In Kluyveromyces Lactis And Kluyveromyces Marxianus, Sezai̇ Türkel, Eli̇f Arik, Si̇nem Güzelvardar
The Effect Of Hyperosmotic Stress And Nitrogen Starvation On Growth And \Beta-Galactosidase Synthesis In Kluyveromyces Lactis And Kluyveromyces Marxianus, Sezai̇ Türkel, Eli̇f Arik, Si̇nem Güzelvardar
Turkish Journal of Biology
Kluyveromyces lactis and Kluyveromyces marxianus are industrial yeasts widely used in the production of the \beta-galactosidase enzyme. Biosynthesis of \beta-galactosidase is controlled by glucose repression. In this study it was demonstrated that the derepression of \beta-galactosidase biosynthesis in these yeast strains is inhibited by high osmotic stress. It was found that the \beta-galactosidase activity of K. lactis and K. marxianus remained approximately at the repressed level when these yeast cells were subjected to NaCl-, KCl-, or sucrose-induced high osmotic stress. Derepression of \beta-galactosidase biosynthesis seems to be more sensitive to high osmotic stress in K. marxianus than in K. lactis. …
Specific Individuals Of Rainbow Trout (Oncorhynchus Mykiss) Are Able To Show Time-Place Learning, M. Saeed Heydarnejad, G. J. Purser
Specific Individuals Of Rainbow Trout (Oncorhynchus Mykiss) Are Able To Show Time-Place Learning, M. Saeed Heydarnejad, G. J. Purser
Turkish Journal of Biology
Using demand-feeders, time-place learning association of food was investigated in rainbow trout (Oncorhynchus mykiss) in 2 small raceways (TR1 and TR2). In order for the fish to be visually identified, they were tagged individually and their behaviour and distribution were monitored by cameras. Equipping with a demand-feeder, TR1 was assigned to test 2 times/1 place (2T/1P) while 2 demand-feeders were used in TR2 assigned to test 2 times/2 places (2T/2P). After 26 days of restricted feeding (RF) the fish were deprived of food for 3 days. The results of the present study indicate that, at the group level, rainbow trout …