Yazar "Gur, E." seçeneğine göre listele

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    Assessment of relationship between geochemical fractions of barium in soil of cherry orchards and plant barium uptake and determination by inductively coupled plasma optical emission spectrometry
    (Atomic Spectroscopy Press Limited, 2019) Sungur, A.; Gur, E.; Everest, T.; Soylak, M.; Ozcan, H.
    This study was conducted to investigate the relationship of geochemical fractions of Ba in soils of cherry orchards and in plant Ba uptake. The levels of Ba in the soil samples were determined after sequential extraction procedure and analysis by inductively coupled plasma optical emission spectrometry (ICP-OES). At the same time, the levels of Ba in cherry leaf samples were determined after a wet digestion procedure by ICP-OES. Soil total Ba concentrations (mean 108.9 µg g-1) were found within normal ranges specified for agricultural soils. The Ba concentration in the cherry leaf samples was found in the range of 9.1 µg g-1 to 20.6 µg g-1. Sequential extraction revealed that Ba existed in highly mobile phases (42%), which are attributed to anthropogenic sources as well as to decomposition of soil parent material. The experimental data were subjected to hierarchical cluster analysis to assess the relationship between the Ba concentration of each fraction and the leaf Ba contents. A significant correlation was observed between the leaf Ba concentrations and the acid soluble fraction. © 2019, Perkin - Elmer Corp. All rights reserved.
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    Assessment of Relationship Between Geochemical Fractions of Barium in Soil of Cherry Orchards and Plant Barium Uptake and Determination by Inductively Coupled Plasma Optical Emission Spectrometry
    (Atomic Spectroscopy Press Ltd, 2019) Sungur, A.; Gur, E.; Everest, T.; Soylak, M.; Ozcan, H.
    This study was conducted to investigate the relationship of geochemical fractions of Ba in soils of cherry orchards and in plant Ba uptake. The levels of Ba in the soil samples were determined after sequential extraction procedure and analysis by inductively coupled plasma optical emission spectrometry (ICP-OES). At the same time, the levels of Ba in cherry leaf samples were determined after a wet digestion procedure by ICP-OES. Soil total Ba concentrations (mean 108.9 mu g g(-1)) were found within normal ranges specified for agricultural soils. The Ba concentration in the cherry leaf samples was found in the range of 9.1 mu g g(-1) to 20.6 mu g g(-1). Sequential extraction revealed that Ba existed in highly mobile phases (42%), which are attributed to anthropogenic sources as well as to decomposition of soil parent material. The experimental data were subjected to hierarchical cluster analysis to assess the relationship between the Ba concentration of each fraction and the leaf Ba contents. A significant correlation was observed between the leaf Ba concentrations and the acid soluble fraction.
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    Determinations of Factors That Effect on Quality Properties of 0900 Ziraat Cherry Variety in Lapseki
    (Univ Namik Kemal, 2012) Delice, A.; Ekinci, N.; Ozduven, F. F.; Gur, E.
    This research was conducted to determine the effects of ecological factors on 0900 Ziraat Cherry Variety in Lapseki between 2004-2005. Fort his purpose, four orchards were determined in different villages of Lapseki . Weather temperatures and moisture were determined during the vegetative growth of trees. Additionally budding, blossom period, fruit development and harvest dates were determined. Fruit radius, lengths, weights, flesh firmness, water soluble dry matter ratios and titratable acidity were measured. Analysis showed that mean air temperature during the vegetation period had positive effect on water soluble dry matter ratios. Low temperatures in 2004-2005 blossoming period caused damage on flowers. Weight increases in fruits were observed as a result of thinning effects. There was a positive relationship between fruit weight and water soluble dry matter ratios in both years
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    Effects of different rootstocks on aroma volatile constituents in the fruits of peach (Prunus persica L. Batsch cv. Cresthaven')
    (Taylor & Francis Ltd, 2017) Seker, M.; Ekinci, N.; Gur, E.
    The consumption of peaches is dependent on fruit quality. Aromatic compounds directly affect the sensorial quality and consumer acceptance of peaches. This study evaluated the fruit quality and aroma volatile constituents of the peach cultivar Cresthaven' grafted on to five different rootstocks in 2012 and 2013. The rootstocks used were Uzunoglu Seedling' (Prunus persica), GF677' (P. persicaxP. dulcis), Nemaguard' (P. persicaxP. davidiana), Cadaman' (P. persicaxP. davidiana) and St. Julien GF 655/2' (P. insititia). Fruits were sampled at the commercial maturity stage around mid-August. Fruit quality characteristics and aroma volatiles differed significantly in peaches grown on different rootstocks. The largest fruits and highest titratable acidity were obtained from Cadaman'. The major volatile constituents of Cresthaven' fruits were acetaldehyde, hexanal, benzaldehyde, ethanol, 1-hexanol, (Z)-3-hexenol, (E)-2-hexen-1-ol, linalool, ethyl acetate, hexyl acetate, (Z)-3-hexenyl acetate, (E)-2-hexenyl acetate, 6-methyl-5-hepten-2-one, (E)--ionone, -decalactone and limonene. The type and concentration of volatile compounds showed great variability in Cresthaven' peach grafted on to different rootstocks. A total of 91 volatile compounds were detected and the highest volatile content was found in GF677'.
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    Gibberellic Acid Inhibits Floral Formation and Delays Flower Differentiation in '0900 Ziraat' Sweet Cherry Cultivar
    (Int Soc Horticultural Science-Ishs, 2014) Engin, H.; Gokbayrak, Z.; Akcal, A.; Gur, E.
    This paper reports on the effects of gibberellic acid (GA(3)) on floral formation and the potential for GA(3) to reduce flower primordia formation in sweet cherry (Prunus avium L.). GA(3) was applied to 4-year-old '0900 Ziraat'/'Gisela 5' trees at two growth stages (early flowering and beginning of fruit development) at the doses of 0, 25, 50, 100, and 250 mg L-1, for a 2-year period. Bud samples were taken from the beginning of July to the end of September in both years in six sequential dates. During the dormant seasons, buds were collected to determine number of flowers per bud. Samples were fixed and stored in a solution of formalin, 70% ethanol and glacial acetic acid (10:50:5, v/v). Flower formation in the buds was examined using a stereo zoom microscope and the morphological changes in each sample were recorded using a camera mounted on the microscope. Number of flowers per bud was negatively and linearly related to GA(3) concentration. Floral formation in '0900 Ziraat' sweet cherry (untreated control) started in early-July and continued until mid-September. The progress during which the sepal, petal, stamen and pistil primordia were differentiated was considerably slower at GA(3) applications. Imperfection of the floral buds was observed as the floral organs being replaced by leaf-like appendages or as none of the flower buds having one normally-developed flower primordia or as floral organs or flower primordia being much smaller than the other.
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    Investigation of Volatile Constituents in Some Promising Local Peach and Nectarine Genotypes Using the HS-SPME Technique by the GC-MS
    (Int Soc Horticultural Science, 2013) Seker, M.; Gur, E.; Ekinci, N.; Gundogdu, M. A.
    Fruit aroma is one of the most important consumer acceptability traits of peaches and nectarines. White nectarines are grown in the northwestern region of Turkey. They have small fruits that are white-cream colored and have high market value because of their unique aroma and attractive appearance. Ten peach and nectarine genotypes including local flat peach, three white nectarines and six standard cultivars were investigated for their volatile constituents using the SPME (Solid Phase Micro Exraction) technique by the GC/MS (Gas Chromatography/Mass Spectrometry). White nectarines, the most aromatic genotypes, were observed to accumulate high levels of esters when compared to the other genotypes.
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    New Promising White Nectarine Genotypes from the Highlands of Northwestern Turkey
    (Int Soc Horticultural Science, 2012) Seker, M.; Gur, E.
    In the Canakkale region located in the northwestern Turkey, peaches and nectarines represents 11% of the total Turkish peach production. The region has an important role as producer of high quality fruits and native nectarine genotypes at the highlands. Kazdagi Mountain located in Canakkale, formerly known as Ida, is the biggest mass of Biga Peninsula where the white nectarine population is concentrated at its plateaus and highlands. Plant characteristics of white nectarines were similar to the trees of common peach or nectarine cultivars. They have small fruits with white-cream color and have high market value because of its unique flavor and attractive appearance. Among white nectarine population, 15 genotypes were selected for their higher yield and attractive fruit characteristics during selection studies. Selected genotypes are certified by the Turkish Ministry of Agriculture and Rural Affairs. The main objectives of the present study are: i) to present some agronomical, phenological, plant and fruit characteristics of the native white nectarine population, ii) to compare the selected genotypes with common peaches and nectarine cultivars, iii) to present preliminary results of hybridizations between white nectarines and different Prunus species and cultivars.
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    THE EFFECTS OF DIFFERENT ROOTSTOCKS ON AROMA VOLATILE CONSTITUENTS IN THE FRUITS OF 'FUJI' APPLES (MALUS DOMESTICA BORKH.)
    (Corvinus Univ Budapest, 2019) Gur, E.
    Five-year-old 'Fuji' (Malus domestica Borkh.) apple trees grafted on MM-106, M-9, M-26, and MM-111 in a commercial orchard in Canakkale (Turkey), were used for determination of fruit quality and aroma volatiles. Fruits were sampled at the commercial harvesting stage at the end of September in 2015 and 2016. Fruit quality characteristics and aroma volatiles changed significantly in apples grown on four different rootstocks. The largest fruits (212.2 g) with highest total soluble solids (18.40%) were obtained from the trees on M9 rootstock. According to chromatography analysis, a total of 51 volatiles were detected in 'Fuji' fruits. Ester compounds were a major part of total volatiles in the fruits. The highest total ester content was obtained from the trees on M9 rootstock, whereas the lowest was from MM106 rootstock. 2-Methylbutyl acetate and ethyl 2-methylbutanoate were the main ester compounds in the fruits considering all volatiles. The total ester concentration in the total volatile compounds in the 'Fuji' apples grafted on the M9 rootstock was 95.52%. This rate was 91.28% for the M26 rootstock, 91.04% for the MM111 rootstock and 88.30% for the MM106 rootstock. The study concluded that the M9 rootstock enhances the aroma content of 'Fuji' apples.
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    The effects of preharvest 1-methylcyclopropene (Harvista) treatments on harvest maturity of 'Santa Maria' pear cultivar
    (Int Soc Horticultural Science, 2019) Sakaldas, M.; Gundogdu, M. A.; Gur, E.
    In this research, the effects of preharvest 1-methylcyclopropene (1-MCP) (Harvista) treatments on fruit drop, harvest maturity due to fruit quality parameters and shelf life of 'Santa Maria' pear cultivar were studied. For this purpose, Harvista treatments at doses of 50, 100, 150 and 200 g ha(-1) were applied to 'Santa Maria' pear cultivar with the comparison of naphthalene acetic acid in Canakkale, Biga region, Turkey. Samplings were carried out on trees 1 day before and 7, 14, 28 and 42 days after applications, respectively. Fruit drop rate, flesh firmness, soluble solids content, starch degradation, titratable acidity, skin colour, and total phenolic compounds were evaluated after each sampling date. Furthermore, fruits were kept at 20-22 degrees C temperature and 50-60% relative humidity conditions as shelf life for 7 and 14 days to determine the ethylene production. According to the results, Harvista applications with 150 and 200 g ha(-1) doses were found as the most positive applications because of preventing fruit drop and minimizing the changes of quality parameters. Harvest maturity could be prolonged for 28 days with these application doses. Harvista could be a good alternative for enlarging the harvest period on `Santa Maria' pears.