Yazar "Erturk, E." seçeneğine göre listele

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    Antifungal activity of propolis against postharvest disease agent Penicillium digitatum
    (Asian Journal Of Chemistry, 2008) Soylu, E. M.; Ozdemir, A. E.; Erturk, E.; Sahinler, N.; Soylu, Soner
    The in vitro and in vivo antifungal activity of the propolis was evaluated against fungal pathogen Penicillium digitatum, causal agent of green mold of citrus fruits. The germination of conidia completely inhibited by 10, 50 and 100 mu g mL(-1) concentrations of propolis extracted in 70 % ethanol. The same concentrations of propolis extracted in 35 % ethanol also inhibited conidial germination by 31, 68 and 93 % respectively. The in vivo effect of propolis on the spoilage of Star Ruby grapefruits by Penicillium was also evaluated at room temperature. None of the concentrations of propolis extracted in 70 % ethanol prevented the fungal growth on artificially inoculated fruits. The 100 mu g mL(-1) propolis extracted in 70 % ethanol, however, provided complete inhibition of naturally occurring green mold disease on wounded but uninoculated control fruits.
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    The Cold Storage of Venus Nectarin Cultivars
    (Univ Namik Kemal, 2006) Ozdemir, A. E.; Erturk, E.; Celik, M.; Dilbaz, R.
    The objective of this study was to determine storage and shelf life of Venus nectarine cultivar grown in Mersin (Tarsus/Yenice). Fruits were kept at 0 degrees C and % 85-90 degrees C relative humidity for 8 weeks. In addition, three replicates of fruits removed from storage room at a week interval were kept at 20 degrees C and % 65-70 degrees C relative humidity for 6 days. Percent weight loss, skin color (L*, a*, b*), fruit flesh firmness (kg force), total soluble solids (%), pH, titretable acidity (g malic acid / 100 ml), physiological and fungal disorders were determined in the fruit samples taken during cold storage at a week interval and those kept at 20 degrees C at a two-day interval. Weight loss increased during storage and reached to about 5% at the end of storage. Fruit flesh firmness decreased, but still remained above 4 kg-force at the end of 8-week storage. Total soluble solid (%) increased while titretable acidity (%) decreased. As the storage period was extended the shelf life was shortened. Venus nectarine cultivars could be kept at 0 degrees C and 85-90% relative humidity for 7 weeks and could have 4-day shelf life after cold storage.
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    Öğe
    Growth and development of Virginia type groundnut cultivars under Mediterranean conditions
    (Taylor & Francis As, 2008) Caliskan, Sevgi; Caliskan, M. E.; Erturk, E.; Arslan, M.; Arioglu, H.
    The growth and development of groundnut (Arachis hypogaea L.) are under the influence of complex environmental factors. Understanding of the growth responses of the groundnut to environmental factors may improve the application of better management practices and develop better cultivars to overcome the problems causing reductions in yield. A two-year field experiment was conducted to determine the growth and development response of groundnut genotypes to environmental factors in the eastern Mediterranean region of Turkey in 2001 and 2002. Time from sowing to physiological maturity (R8) ranged from 2513 degrees Cd to 2588 degrees Cd in 2001 and from 2514 degrees Cd to 2573 degrees Cd in 2002 while total calendar days varied between 147 and 153 and between 156 and 161 depending on genotypes in 2001 and 2002, respectively. Dry matter accumulation in each part of the plants continued until maturity although accumulation rate differed depending on plant age. Combination of suitable temperature and photoperiod during the reproductive stages resulted in continuous and abundant reproductive plant parts, which led to delayed harvest and increased unmarketable pods. The slower growth rate due to the cooler conditions during early stages caused slower biomass accumulation in successive stages indicating the importance of initial crop growth for final yield. Therefore, the genotypes having high initial growth rate, less reproductive organs, and shorter growing period should be developed for the Mediterranean conditions by breeders. The management studies should also deal with increased initial growth rate and reduced number of flowers, pegs or pods per plant. Based on our results, groundnut has a great yield potential under the Mediterranean conditions. However, further breeding and management studies are needed to improve the yield and profitability and reduce the complications arisen from the Mediterranean climate.