Egirdir Horticultural Research Institute

Eğirdir, Turkey

Egirdir Horticultural Research Institute

Eğirdir, Turkey
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Gulsen O.,Erciyes University | Kaymak S.,Egirdir Horticultural Research Institute | Ozongun S.,Egirdir Horticultural Research Institute | Uzun A.,Alata Horticultural Research Institute
Scientia Horticulturae | Year: 2010

Plant peroxidases belong to a multigene family and posses highly conserved domains allowing to design oligonucleotide primers to amplify DNA sequences coding for peroxidases from plants with unsequenced genomes. Peroxidase gene-based polymorphism among Malus species, and correlation between peroxidase markers were deduced in this study. Turkish apple germplasm was evaluated using 14 peroxidase specific primers. Targeted-PCR amplification of genomic DNA from 192 apple genotypes available in the Turkish genetic resources yielded polymorphisms giving a similarity range from 0.56 to 0.98 with a mean of 0.77. Based on the POGP gene polymorphism, two distinct clusters were detected among the apple accessions, suggesting different evolutionary pathway. Correlation estimates as an indication of linkage disequilibrium between POGP markers ranged from -0.22 to 0.90, suggesting that few POGP markers were clustered and the remaining POGP markers evenly distributed throughout the apple genome. These results demonstrate that primers targeting the peroxidase gene family can be used to study genotypic diversity and evolutionary relationships on an intra- and inter-specific basis. © 2010 Elsevier B.V. All rights reserved.

Atay E.,Egirdir Horticultural Research Institute | Pirlak L.,Selcuk University | Atay A.N.,Egirdir Horticultural Research Institute
Tarim Bilimleri Dergisi | Year: 2010

This study was carried out in order to examine the fruit development in some apple varieties which are grafted on MM 106 rootstock and reach the harvesting maturity in various periods under Isparta (Eǧirdir) conditions. Changes in diameter of the fruits were regularly measured, beginning from the time when they reached about 1 cm diameter size until the harvesting time so that we could create fruit growth curves in Jerseymac, Galaxy Gala and Braeburn apple varieties that are grafted on MM 106 rootstock. All varieties grew with a regular single sigmoid curve from fruit set time to harvest. During grow and development periods average fruit weight, soluble solids content, pH value of the fruit juice increased, and fruit firmness, titratable acidity decreased. Moreover, it was found out that the values L and b decreased while the value a increased during harvest times of the varieties when compared to the first samples taken right after the color broken (P < 0.01 for Braeburn and P > 0.05 for other varieties). © Ankara Üniversitesi Ziraat Fakültesi.

Karamursel O.F.,Egirdir Horticultural Research Institute | Kalyoncu I.H.,Selcuk University
African Journal of Biotechnology | Year: 2011

This study was carried out at the Eǧirdir Horticultural Research Institute, between the years 2006 and 2007. The aim of this study was to investigate the advantages of apple nursery growing greenhouse rather than outdoor medium. Scions of Red Chief (dwarf), Braeburn (semi dwarf) and Mondial Gala (vigorous) apple varieties were grafted by the bench grafting and chip budding techniques on MM106 and M9 apple rootstocks. In result to evaluation of all factors, it was found that the percentage of graft survival was between 82% (greenhouse) and 69% (outdoor), sapling height 84.86 (outdoor) -146 cm (greenhouse), shoot diameter 6.84 (outdoor) -10.71 mm (greenhouse). Sapling development grafted on MM 106 apple rootstock more than M9 apple rootstocks in greenhouse and outdoor medium. On the other hand, development of Mondial Gala apple varieties was higher than Breaburn and Red Chief varieties in every medium. As graft techniques graft, survival ratio in bench graft were 82% and this ratio 64% in chip budding. In addition to sapling height, shoot diameter and shoot height was not significant. In outdoors, it could not produce branching in saplings and first quality, but in greenhouse conditions differences were been determinated according to rootstocks and varieties. © 2011 Academic Journals.

Cetinbas M.,Egirdir Horticultural Research Institute | Koyuncu F.,Suleyman Demirel University of Turkey
Tarim Bilimleri Dergisi | Year: 2011

This study was conducted to prolong the harvest date and enhance the fruit quality of 'Monroe' peaches. For this purpose, ReTain containing 15% aminoethoxyvinylglycine (AVG) was applied to the peach fruits. AVG at concentrations of 0, 100, 150 and 200 mg l -1 was sprayed on the peaches 7, 21 and 30 days before commercial harvest. Some fruit quality parameters [fruit weight (g), fruit flesh firmness (N), soluble solids content (SSC, %), titratable acidity (TA, %), fruit colour (L*, a*, b*), sugar content, delay in harvest, ethylene production (μl kg -1 h -1) and respiration rate (ml CO 2 kg -1 h -1)] were measured for each treatment. Fruit maturity was delayed about 4-6 days more in AVG-applied fruits than in the control group. A sequential harvest was completed 6-7 days before the normal harvest time. Application of AVG increased the fruit size and fruit weight of 'Monroe' peach. AVGsprayed fruits were firmer than the fruits of control group. AVG applications also decreased ethylene production and the respiration rate of fruits. As a results, application AVG of 100 or 200 mg l -1 concentrations 30 days before commercial harvest for 'Monroe' peach varieties can be recommended. © Ankara Üniversitesi Ziraat Fakültesi.

Canli F.A.,Suleyman Demirel University of Turkey | Sahin M.,Suleyman Demirel University of Turkey | Temurtas N.,Egirdir Horticultural Research Institute | Pektas M.,West Mediterranean Development Agency
HortTechnology | Year: 2014

Applications that could improve apricot (Prunus armeniaca) fruit size and quality would enhance their marketability. In this study, the effects of preharvest benzyladenine (BA) and BA plus gibberellin (GA) applications on fruit quality of 'Alyanak' apricot were investigated. BA (50, 100, and 150 ppm) and BA + GA4+7 (12.5, 25, and 50 ppm) were applied at the beginning of pit hardening stage. When fruit reached their maturity, samples were harvested and evaluated in terms of: weight, size, firmness, soluble solids content (SSC), acidity, and pH. Fruit treated with BA were significantly heavier and larger than fruit not treated, and there were significant differences in fruit size within the BA-treated fruit. The heaviest and the largest fruit were obtained from 100 to 150 ppm BA concentrations. BA + GA4+7 treatments did not affect fruit size. Application of 100 ppm BA and 25 ppm BA + GA4+7 increased fruit firmness at harvest. SSC, pH, and acidity were unaffected by the applications. The results obtained in this study showed a practical benefit of a single application of BA at the end of pit hardening for improving apricot quality. Fruit treated with the optimum dose of BA (100 ppm) were larger and firmer than untreated fruit.

Dilmacunal T.,Suleyman Demirel University of Turkey | Erbas D.,Suleyman Demirel University of Turkey | Koyuncu M.A.,Suleyman Demirel University of Turkey | Onursal C.E.,Egirdir Horticultural Research Institute | Kuleasan H.,Suleyman Demirel University of Turkey
LWT - Food Science and Technology | Year: 2014

Turkish-type 'Kirkaǧaç' melons (Cucumis melo L. var. inodorus cv. 'Kirkaǧaç') were hand-harvested at a commercial harvest maturity stage from a greenhouse in Turkey (Antalya). Fruits were divided into four groups for the experiments: 1. Control (C), 2. Hazelnut oil (HO), 3. Gaseous Ozone (GO), and 4. NaClO. After the treatments, slices were placed immediately to lidded plastic boxes (500 g capacity) and stored in a cold room at 5 °C and 90 ± 5% relative humidity for 12 days. Fruits were evaluated at three-day intervals for microbial enumeration, firmness, flesh color, titratable acidity (TA), pH, soluble solid content (SSC), weight loss, sensorial attributes (external appearance, taste-flavor and translucency), respiration rate and ethylene production. The integrity of the slices treated with GO was preserved better than those of the others and no juice leakage was observed during storage. According to the results, especially for microbial and sensorial attributes, control, NaClO and HO treated melon slices were preserved their quality for six days, whereas GO treated samples were stored for nine days with good quality. © 2014 Elsevier Ltd.

Ozturk F.P.,Egirdir Horticultural Research Institute | Kacal E.,Egirdir Horticultural Research Institute | Sarisu H.C.,Egirdir Horticultural Research Institute | Karamursel D.,Egirdir Horticultural Research Institute | Emre M.,Egirdir Horticultural Research Institute
Acta Horticulturae | Year: 2010

Pre-harvest and harvest losses were assessed in '0900 Ziraat' sweet cherry cultivar. The trials were carried out at three different production regions as Uluborlu, Ilavuz and Eǧirdir of Isparta province. Four different sweet cherry growers were selected from each region. Fruit samples were taken during harvest and the main reasons of fruit losses were determined. 33% of Isparta sweet cherry production, pre-harvest and during harvest is lost due to the misapplication. Preharvest losses were found higher in the Uluborlu than other regions (19.67%). In this region small and stemless fruits are a problem for growers. Ilavuz is the region which has the highest harvest losses (18.91%). Small fruit (12%) has the highest rates in the total loss of the region. The second reason was the loss by bird damage (5%).

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