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Search Results: 1 - 10 of 10 matches for " Digdem Kaydan "
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Different Intercrop Arrangements with Lentil and Barley under Dryland Condition
Mehmet Yagmur,Digdem Kaydan
Pakistan Journal of Biological Sciences , 2006,
Abstract: This study was carried out to evaluate the performance of different intercrop arrangements with lentil and barley crops under dryland condition. This experiment was conducted in field conditions in Van, eastern of Turkey (38°-55`N, 2°-05`E, 725 m above sea level) in 2004-2005 in winter growing seasons. In this study, all intercrop arrangements affected on yield and yield components of barley and lentil significantly. Intercrop arrangements reduces all yield components except plant height of lentil. In barley, all intercrop arrangements increased plant height. Separately, mixing intercrop arrangement reduced number of seed per spike and seed weight per spike of barley compared to sole barley. Row cropping arrangement increased number of seed per spike and seed weight per spike of barley. The highest land equivalent ratio for straw was determined by 100% barley + 60% lentil and 100% barley + 40% lentil mixtures with 1.34 and 1.29, respectively. The highest LER for seed was obtained 100% barley + 20% lentil mixtures as 1.20 LER.
Effects of Sowing Densities and Phosphorus Doses on Some Phenologic, Morphologic Characters and Seed Yield of Dry Bean Under Irrigation Condition in Van, Turkey
Mehmet Yagmur,Digdem Kaydan
Pakistan Journal of Biological Sciences , 2004,
Abstract: In this research, dry bean variety Seker (Phaseolus vulgaris Var volubilis Dekapr.) were grown with three different sowing densities, (25, 37.5 and 50 seeds m-2 ) and five different phosphorus doses (0, 15, 30, 45 and 60 kg P2O5 ha-1) to determine the most suitable sowing density and phosphorus doses for the cultivar in terms of phenologic, morphologic and seed yield in Van Turkey in 1997 and 1998 years. As the sowing density increased, as plant characters such as days to flowering, days to maturity, seed yield, first pods height and plant height increased in dry bean cultivar. Whereas numbers of branching showed reduction. Seed yield and number of branches were increased by increasing phosphorus doses. But days to flowering and days to maturity were decreased by phosphorus doses. The highest seed yield was obtained from 50 seed m-2 +60 kg P2O5 ha with 1920.0 kg ha-1 in 1997 and in second year the highest seed yield was obtained from applications of 37.5 seed m-2 +45 kg P2O5 ha-1 with 1701.0 kg ha-1. The lowest seed yields were obtained from application of 25 seed m-2 +0 kg P2O5 ha-1 with, respectively 1457.5 and 1262.5 kg ha-1 in both years.
The effects of different sowing depth on grain yield and some grain yield components in wheat (Triticum aestivum L.) cultivars under dryland conditions
M Yagmur, D Kaydan
African Journal of Biotechnology , 2009,
Abstract: and yield components for wheat cultivars during 2004-2006 at one site in Van Province in Eastern Turkey. Grain yield and yield components were found to positively correlate with coleoptile length, with marked declines observed in grain yield and yield components among varieties with shorter coleoptiles in deepest sowing. Wheat sown at 5 cm gave greater yields than wheat sown at 3, 7 and 9 cm by 19.9, 22.3 and 62.5%, respectively. The highest grain yield (2.98 T ha-1) was obtained with the Alparslan cultivar sown at a depth of 5 cm. Grain yield of all varieties tested was drastically reduced when sown at depths of 9 cm, with the exception of the local Tir and Alparslan varieties, both of which, when compared to the other varieties tested, had longer coleoptiles.
xTriticosecale Witm, seed size, drought, germination, seedling growth.
D Kaydan, M Yagmur
African Journal of Biotechnology , 2008,
Abstract: Effect of seed size (small, medium and large) on germination and seedling growth of triticale (xTriticosecale Witm. cv. Presto) at the different osmotic potential of NaCl and PEG solutions were determined in the present study. Germination tests were conducted under five osmotic potential levels (-0.45, -0.77, -1.03, -1.44 MPa, and Control) of PEG 6000 and NaCl. Germination percentage (%) at 4 and 8th days and also seedling growth traits such as root and shoot length (mm), dry root and shoot weight (mg), root : shoot length (R:S) ratio, and relative water content of shoot (RWC, %) were investigated in this study. The results indicated that decreases in the osmotic potentials caused a reduction in germination percentage and seedling growth. It was seen that drought created by PEG 6000 had more negative effects on germination and seedling growth than that of NaCl. In consequence, the total germinability and seedling growth were higher in large seeds rather than in small seeds in control solution and under osmotic stress. In addition, it was observed that seedlings obtained from larger seeds survived even at the lower osmotic potential of PEG and NaCl; whereas, seedling obtained from small seeds did not survive in the intensive stress.
Alleviation of osmotic stress of water and salt in germination and seedling growth of triticale with seed priming treatments
M Yagmur, D Kaydan
African Journal of Biotechnology , 2008,
Abstract: Effects of seed priming treatments with 0.5% KH2PO4 (w/v) solution and water were determined on germination and seedling characters of hexaploid triticale (Triticosecale Witm., cv. Presto) in different osmotic potential of NaCl and PEG solutions. Drought and salt osmotic stress conditions were separately created by using PEG 6000 and NaCl, respectively, at different osmotic potentials (-0.45, - 0.77, -1.03 and -1.44 MPa and control). At the equivalent osmotic potential, the effects of PEG 6000 were more harmful than NaCl on germination and seedling stage. Germination percentage and seedling growth and also relative water content (RWC, %) decreased with the decrease in osmotic potential of PEG 6000 and NaCl. But root-to-shoot length ratios increased with the effects of osmotic stress of PEG 6000 and NaCl. Despite the negative effects of two stress conditions, the two priming treatments were effective in improving germination percentage and seedling growth in Presto. But seed primed treatment was effective at the lowest osmotic potentials; therefore, seedling growth survived at the highest concentrations. Consequently, the effect of hydropriming is very pronounced particularly in improving germination and seedling growth in low stress.
Variations in Seedling Characters of Some Wheat and Barley Genotypes During Germination
Di dem Kaydan,Mehmet Ya mur
Pakistan Journal of Biological Sciences , 2005,
Abstract: This laboratory study was conducted in Van, Turkey to determine an evaluation of seedling characters of six wheat and eight barley genotypes during germination. The experimental design was a Randomized Complete Block with four replications. Both barley and wheat varieties of the seed were germinated 98-100% at 4th day during germination. Similar findings were obtained at 8th days. Barley cultivars having high seed test weight gave strong shoot and root in this experiment. First marked things in results of study, homebred mixed population line Tir gave the longest coleoptile length with 5.21 cm at 8th day during germination. This variety is favourable cultivar for deep planting as this study results.
The Effect of Linear Versus Circular Vector on Enhanced Green Fluorescent Protein (EGFP) Expression in Transgenic Zebrafish (Danio rerio)
Aygul Ekici,Digdem Aktoprakligil,Metin Timur,Tolga Akkoc,Haydar Bagis
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2010.1232.1236
Abstract: Green Fluorescent Protein (GFP) has been used as an indicator of transgene expression in living cells and organisms. In this study, a transgene construct containing the Cyto-Megalo-Virus (CMV) promoter sequences, SV40 polyA signal and the Enhanced Green Fluorescent Protein reporter gene (EGFP) was microinjected into the cytoplasm of one-cell zebrafish embryos. About 65 ng μL-1 circular and linearized pEGFP-N1 DNA was used in microinjection. Transgenic founders were detected by Polymerase Chain Reaction (PCR), Slot and Southern blots and Reverse-Transcriptase PCR (RT-PCR). EGFP gene expression was detected by inverted fluorescence microscope in F0 transgenic zebrafish larvae. About 54 and 25 F0 transgenic zebrafish were obtained after microinjection of linearized and circular gene constructs, respectively. This is the first study for generation of transgenic zebrafish via cytoplasmic DNA microinjection in Turkey. In conclusion, these results indicate that the gene expression efficiency of circular form was higher than the linearized form in F0 transgenic zebrafish larvae.
Can 5-aminosalicylic acid suppository decrease the pain after rectal band ligation?
Burcak Kayhan, Digdem Ozer, Meral Akdogan, Ersan Ozaslan, Osman Yuksel
World Journal of Gastroenterology , 2008,
Abstract: AIM: To investigate the effect of 5-aminosalicylic acid (5-ASA) suppositories on rectal band ligation-induced pain.METHODS: Sixty patients were randomized into two treatment groups.RESULTS: Our results showed that there was no difference between 5-ASA suppository group and the control group for pain control.CONCLUSION: 5-ASA may be an alternative treatment for hemorrhoids; however, it does not affect the rectal band ligation-induced pain.
Cytotoxicity evaluation of methacrylate- and silorane-based composite resins
Ozden Ozel Bektas,Digdem Eren,Gulsah Goktolga Akin,Zubeyde Akin Polat
Cumhuriyet Dental Journal , 2012, DOI: 10.7126/cdj.2012.1699
Abstract: Objectives: The objective of this study was to investigate and compare the cytotoxic effects of four composite resin materials with different content. Material and Methods: Two traditional methacrylate-based (Clearfil AP-X, RefleXions), as well as a self-adhering methacrylate-based (Vertise Flow) and a silorane-based (Filtek Silorane) composite resin were tested in the experiment. Ten cylindrical specimens were made of each material, using a mould (2mm. thick and 8 mm. in diameter). An agar diffusion method was employed, and cytotoxicity rankings were determined using lysis index scores. For statistical analysis, Kruskal-Wallis and Mann-Whitney U-tests were used. Results: Amongst the composite resins, the silorane-based composite was found to be less cytotoxic than the methacrylate-based composite resins, which all had the same cytotoxicity ranking. Conclusions: The silorane-based composite resin was considered more biocompatible than the methacrylate-based composite resins.
Use of molecular tools for the identification of males of some scale insects (Hemiptera: Coccoidea), in pheromone traps used for monitoring and comparison with females
István Tóbiás,Ferenc Kozár,Bora. M. Kaydan,Kinga Fetykó
Journal of Entomological and Acarological Research , 2010, DOI: 10.4081/jear.2010.e16
Abstract: Species from Pseudococcidae family were studied. It was determined that the dry males of Planococcus citri, and Pseudococcus comstocki, collected by pheromone traps could be useful for the molecular analyses too. The ITS-2 sequences of males and females in case of Pl.citri, Planococcus ficus and Ps. comstocki were identical. This molecular method could differentiate the two mealybug species and this method can be useful to have idea specimens collected by pheromone traps.
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