Yazar "Egesel, Cem O." seçeneğine göre listele

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    A preliminary study for determination of the possibility of simultaneous selection for oil content and grain yield in maize
    (Maydica-Ist Sper Cerealicoltur, 2015) Kahrıman, Fatih; Egesel, Cem O.; Onac, Iskender
    We investigated the genetic potential of six maize families for simultaneous selection of oil content and grain yield. Six generations of six families were generated in 2011 and 2012. These genotypes were tested in a field experiment, conducted in Dardanos Research and Application Center, Canakkale, Turkey, in 2013. Data were collected on oil content and grain yield per plant and then analyzed by using Generation Mean Analysis method to determine the appropriate families for simultanous selection studies. We also calculated genetic effect estimations for these traits in the investigated genotypes. Results showed that there were significant differences among the families and generations for oil content and grain yield. The variation in oil content in the families was mainly controlled by additive gene actions. Simultaneous selection did not seem feasible in the tested families, though there was a good chance for considerable enhancement in some genotypes if the investigated traits were taken into account singlehandedly. Three families (A680x-IHO, IHOxB73 and IHOxHYA) showed potential for selection to enhance oil content, while two others (IHOxMo17 and Mo17xIHO) were promising for grain yield. Estimated genetic gains were in the range of 0.4% to 4.1% per cycle for oil content, and 17.7 g to 60.7 g per cycle for grain yield.
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    Nitrogen and fungicide applications against Erysiphe cruciferarum affect quality components of oilseed rape
    (Springer, 2008) Mert-Turk, Figen; Gul, M. Kemal; Egesel, Cem O.
    Oilseed rape (Brassica napus L.) is one of the most important oilseed crops in temperate climates. Erysiphe cruciferarum is an important disease of oilseed rape and causes crop loss in warmer areas of Europe. The research investigated the effect of nitrogen fertilizer and fungicidal treatment against powdery mildew infection caused by E. cruciferarum of oilseed rape on seed components, including protein, oil, oleic acid, linolenic acid and undesirable substances such as sinapic acid esters (SAE) and glucosinolates (GSL), using near infrared spectroscopy (NIRS). Five susceptible oilseed rape varieties were employed in this research using four treatment groups: no nitrogen fertilization and no fungicidal treatment (N-0 - F-0); no nitrogen fertilization but fungicidal treatment (N-0 - F-1); and nitrogen fertilization but no fungicidal treatment (N-1 - F-0); nitrogen fertilization and fungicidal treatment (N-1 - F-1). Nitrogen fertilization increased the protein, but lowered the oil content, of the seeds. Fungicidal treatments significantly increased oil contents in all varieties tested, however reduced protein levels in fertilized and non-fertilized plots. The level of linolenic acid did not change significantly in any plots of any treatment combinations; a similar result was observed in the level of oleic acid in most of the genotypes. Nitrogen fertilization increased GSL and SAE levels, whereas fungicidal treatment had no effect. Our findings demonstrated that nitrogen fertilization can markedly influence some quality parameters in oilseed rape; however, the application of fungicides reduced side effects of nitrogen fertilizer and resulted a reduction on GSL, SAE and protein contents but an increase on total oil and oleic acid contents.
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    Öğe
    The effect of autumn and spring planting time on seed yield and protein content of chickpea genotypes
    (Academic Journals, 2008) Tayyar, Semun; Egesel, Cem O.; Gul, Kemal M.; Turhan, Hakan
    The objective of this study was to investigate the effects of autumn and spring plantings on seed yield and quality of chickpea genotypes. Fourteen chickpea genotypes were grown over the consecutive two growing seasons in northwest Turkey. The results showed that planting time had significant effects on the investigated traits (P < 0.05). Significant differences for yield were observed between autumn (2050 kg ha(-1)) and spring (1588 kg ha(-1)) plantings. Line 99-59C was the highest yielding genotype both in autumn (2662 kg ha(-1)) and spring (2000 kg ha(-1)) plantings. Seed analysis revealed that crude protein content in spring planting (23.2%) was higher than in autumn planting (20.5%). The highest protein content (21.1%) was produced by genotype P-2 in autumn planting whereas line 97-73C had the highest content (24.6%) in spring planting. In addition, yield was highly and positively correlated with C/N ratio (r = 0.20**) whereas it was negatively correlated with protein (r = -0.19**). As a result, planting time influenced yield, yield components and chemical composition of the genotypes. Autumn planting had advantages for higher seed yield and consequently higher amount of protein per harvested area.