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Öğe Adaptation of Some Foreign Almond Cultivars in Dortyol (Hatay) Ecological Conditions(Int Soc Horticultural Science, 2011) Polat, A. A.; Caliskan, O.This study was carried out during the years between 2002 and 2006. The aim of this tudy was to determine the phenological, pomological characteristics and yielding status performance of three foreign almond cultivars (Texas, Nonpareil and Drake) in Dortyol (Hatay), Turkey, which has a Mediterranean climate. Drake was found to be the latest flowering cultivar, while Nonpareil and Texas were the earliest flowering. In these cultivars, the nut shell weights varied in the range 1.70-2.42 g, kernel weights in the range 0.81-1.04 g, the percentage of kernel in the range 43.58-48.44%, the shell thickness in the range 1.57-2.50 mm and the double kernel ratio in the range 3.9-6.0% were determined. Average over five years the highest yields per tree were 2.53 kg in Nonpareil and 2.21 kg in Drake.Öğe Adaptation of some foreign almond cultivars in Dörtyol (Hatay) ecological conditions(International Society for Horticultural Science, 2011) Polat, A.A.; Caliskan, O.This study was carried out during the years between 2002 and 2006. The aim of this tudy was to determine the phenological, pomological characteristics and yielding status performance of three foreign almond cultivars (Texas, Nonpareil and Drake) in Dörtyol (Hatay), Turkey, which has a Mediterranean climate. Drake was found to be the latest flowering cultivar, while Nonpareil and Texas were the earliest flowering. In these cultivars, the nut shell weights varied in the range 1.70-2.42 g, kernel weights in the range 0.81-1.04 g, the percentage of kernel in the range 43.58-48.44%, the shell thickness in the range 1.57-2.50 mm and the double kernel ratio in the range 3.9-6.0% were determined. Average over five years the highest yields per tree were 2.53 kg in Nonpareil and 2.21 kg in Drake.Öğe Determination of Fruit Set Ratios of Loquat Genotypes in the Mediterranean Coastal Region of Turkey(Int Soc Horticultural Science, 2011) Polat, A. A.; Caliskan, O.This study was conducted to determine fruit set ratios of cultivars of loquat (Eriobotrya japonica Lindl. 'Hafif Cukurgobek', 'Sayda', 'Gold Nugget', 'Ottowianni', 'Lapta B-2', 'Baduna 5', 'Guzelyurt 1', 'Sampiyon', 'Lapta M' and 'Lapta 1') on the coast of the Mediterranean region of Turkey between 2007 and 2009. Altitude of the experimental site was 9 m a.s.l. (36 degrees 09' E, 36 degrees 51' N). Trees were budded onto seedlings and planted 6x6 m apart in 1997. To determine fruit set, four branch was randomly selected from all four directions on each tree. Percent blossom ratios, % initial fruit set, and % final fruit set were determined during the experimental period. Fruit set was significantly different depending on the year and cultivar. According to three-year averages, fruit set had higher ratios on 'Ottowianni' (12.0%), 'Gold Nugget' (11.7%), 'Sampiyon' (11.5%), 'Hafif Cukurgobek' (11.5%), and 'Sayda' (10.2%).Öğe Determination of Growth and Fruit Quality Parameters of Some Apricot Cultivars in Subtropical Climate Conditions of Turkish Mediterranean Region(Int Soc Horticultural Science, 2010) Polat, A. A.; Caliskan, O.This study was conducted in Hatay (Dortyol), located in the eastern Mediterranean coast of Turkey from 2002 to 2005. The study aimed at assessing some phenological and pomological characteristics such as flowering period, average fruit weight, fruit dimensions, flesh/seed ratio, acidity and total soluble solids (TSS) in 4 apricot cv. In addition, the vegetative growth of the cultivars was evaluated by measuring the trunk diameters and lengths of annual shoots. Over four years, the highest average fruit weight was obtained from 'Early Kishinewski' (62.54 g), whereas the weight of the 'Priana's fruits was the lowest (26.37 g). The flesh/seed ratio was the highest in the 'Early Kishinewski' (16.46). 'Bebeco' had the highest TSS content with 12.83%, whereas 'Precoce de Tyrinthe' had the lowest TSS value with 9.77%. 'Priana' ripened the earliest (13 May) while 'Early Kishinewski' was the latest ripening cv. (5 June). The average yield was higher in 'Precoce de Tyrinthe' and 'Bebeco' than others for yield/tree. In conclusion, based upon precocity, yield and taste, 'Priana', 'Precoce de Tyrinthe' and 'Bebeco' seemed to be good cultivars that could be recommended for planting in the area around and in Dortyol, Turkey.Öğe Determination of pomological characteristics of some pomegranate cultivars in Dörtyol (Turkey) conditions(International Society for Horticultural Science, 2012) Polat, A.A.; Caliskan, O.; Kamiloglu, O.In this study, fruit quality characteristics of some pomegranate cultivars ('Hicaz', 'Katirbaşi', 'Çekirdeksiz' and 'Kara Mehmet') were determined in Dörtyol, Hatay, Turkey. Several pomological characteristics of the cultivars were determined from the 2002 until the 2006 growing season. Averaged over the 4 years, pomegranate cultivars had a range of 241.1-319.8 g for fruit weight, 67.5-78.7 mm fruit height, 75.2-85.3 mm fruit width, 2.9-4.0 mm peel thickness and 57.7-64.1% in percent arils. In addition, the total soluble solid content was between 14.3 and 16.6%, pH between 2.97 and 3.20, acidity between 0.39 and 1.59%. Pomegranate cultivars had a green or yellow background color, red or pink peel coverage and aril color, and soft, semi-hard and hard seeds. According to the data obtained, 'Hicaz' and 'Katirbaşi' were found to be promising for cultivation under the ecological conditions in Dörtyol.Öğe Effect of Different Environments on Pomological Characteristics of Some Almond Cultivars(Int Soc Horticultural Science, 2011) Caliskan, O.; Polat, A. A.The aim of this study was to determine the effect of different environments on fruit characteristics of some almond cultivars in Yayladagi (Hatay) ecological conditions. Five almond cultivars were studied: 'Genco', 'Ferraduel', 'Ferragnes', 48-5 and 101-9 planted in two fields in Yayladagi (Hatay), in the Eastern Mediterranean Region of Turkey. Two trials were established in 1996; one trial at Sebenoba village, 36 degrees 02' N, 36 degrees 01' E, 328 m.a.s.l. and one trial at Karakose village, 36 degrees 01' N, 36 degrees 01' E 422 m.a.s.l. Although all the parameters evaluated were higher in Sebenoba, nut and kernel weight, nut and kernel length showed significant differences between the Sebenoba and Karakose locations. The highest nut and kernel weight were found in Sebenoba village conditions. The kernel weights of 'Ferragnes' (1.33 g), 'Genco' (1.28 g) and 'Ferradual' (1.21 g) were bigger than the others. 101-9 and 'Ferragnes' had the highest kernel percentage. In the study, especially 'Ferragnes' gave better results than the others.Öğe Effect of indolebutyric acid (IBA) on rooting of cutting in various pomegranate genotypes(2009) Polat, A. Aytekin; Caliskan, O.Rooting of stem cuttings of five pomegranate types selected from Delibekirli village, K?r?khan (Antakya, Hatay-Turkey) taken in different periods under mist-propagation were investigated. The cuttings were prepared as 20-25 cm in length from wood shoots, and 1,000 ppm indolebutyric acid (IBA) was used as a rooting hormone. In the study, rooting ratio (%), root number, and root length of the cutting were measured. Among the cuttings rooted, the highest rooting percentage was observed in 31-N-01, while the lowest rooting percentage in 31-N-05. The cuttings taken at the end of February had higher rooting percentage than those taken at the beginning of October. The 1,000 ppm IBA treated cutting had a slightly higher rooting percentage than the control. The number of roots was highest in the cutting of the 31-N-01 type and lowest in the cutting of the 31-N-05 type. There were higher roots in the 1,000 ppm IBA treated cuttings than the control cuttings for the 31-N-01, 31-N-02 and 31N-03 types whereas the 31-N-04 and 31-N-05 types had lower roots in the 1,000 ppm IBA treated cuttings than the control cuttings. 31-N-01 type when compared to others gave more favorable results in terms of root length. The 1,000 ppm IBA treatment affected positively rooting percent of cuttings and the other characteristics although it was not to the satisfactory level. It was concluded that the increasing dose of IBA could be useful.Öğe Effect of Indolebutyric Acid (IBA) on Rooting of Cutting in Various Pomegranate Genotypes(Int Soc Horticultural Science, 2009) Polat, A. Aytekin; Caliskan, O.Rooting of stem cuttings of five pomegranate types selected from Delibekirli village, Kirikhan (Antakya, Hatay-Turkey) taken in different periods under mist-propagation were investigated. The cuttings were prepared as 20-25 cm in length from wood shoots, and 1,000 ppm indolebutyric acid (IBA) was used as a rooting hormone. In the study, rooting ratio (%), root number, and root length of the cutting were measured. Among the cuttings rooted, the highest rooting percentage was observed in 31-N-01, while the lowest rooting percentage in 31-N-05. The cuttings taken at the end of February had higher rooting percentage than those taken at the beginning of October. The 1,000 ppm IBA treated cutting had a slightly higher rooting percentage than the control. The number of roots was highest in the cutting of the 31-N-01 type and lowest in the cutting of the 31-N-05 type. There were higher roots in the 1,000 ppm IBA treated cuttings than the control cuttings for the 31-N-01, 31-N-02 and 31N-03 types whereas the 31-N-04 and 31-N-05 types had lower roots in the 1,000 ppm IBA treated cuttings than the control cuttings. 31-N-01 type when compared to others gave more favorable results in terms of root length. The 1,000 ppm IBA treatment affected positively rooting percent of cuttings and the other characteristics although it was not to the satisfactory level. It was concluded that the increasing dose of IBA could be useful.Öğe Effect of Natural Lipid on Flowering, Pollination Traits and Fruit Set on Loquat (Eriobotrya japonica Lindl.)(Asian Journal Of Chemistry, 2009) Demirkeser, T. H.; Polat, A. A.; Caliskan, O.In this study, the possible effects of lysophosphatidylethanolamine when applied onto eight-year-old Eriobotrya japonica Lindl. loquat cultivar is investigated. Treatments included both single and double applications of lysophosphatidylethanolamine sprayed before bloom and an untreated control. The treated buds were sampled from trees for laboratory pollen experiment and the trees were observed for several flowering, fruit set and harvest traits. In laboratory experiment, the pollen grains were sowed on media having various sucrose concentrations (5, 10, 15 and 20 %) and incubated on 10, 15 and 20 degrees C. It was observed that pollen germination and tube growth increased on 15 and 20 degrees C incubation temperatures and 10 and 20 % concentrations. The experiment also indicated that single lysophosphatidylethanol ami ne application increased the pollen viability rate (%). Pollen germination rate (%) and pollen tube growth were negatively affected by lysophosphatidylethanolamine treatments when evaluated after 3, 6 and 9 h incubation. The field observations indicated that lysophosphatidylethanolamine conditioned earliness for flowering and harvest date. The double application also had significantly higher fruit set comparing the control. Taken together, the results indicate that lysophosphatidylethanolamine applications may be beneficial for fruit set and earliness in. loquat production.Öğe The Effect of Winter Cold on Flowering of Various Loquat Cultivars(Int Soc Horticultural Science, 2011) Polat, A. A.; Caliskan, O.A study on the effect of winter cold on flowering of various cultivars of loquat (Eriobotrya japonica Lindl.) was carried out at the Mustafa Kemal University, Agriculture Faculty, Dortyol Research Station in Hatay, Turkey, in the 2007/2008 season. Dortyol has a typical Mediterranean climate. Ten loquat cultivars were evaluated: 'Hafif Cukurgobek', 'Sayda', 'Gold Nugget', 'Ottowianni', 'Lapta B-2', 'Baduna 5', 'Guzelyurt 1', 'Sampiyon', 'Lapta M' and 'Lapta 1'. Loquat flower buds were more resistant to winter colds than flowers. Flower buds and flowers were more sensitive to low temperatures in the north and south direction of trees. Maximum frost damages were found in 'Lapta 1' and 'Baduna 5'.Öğe Effects of genotype and harvest year on phytochemical and fruit quality properties of Turkish fig genotypes(Spanish Natl Inst Agricultural & Food Research & Technolo, 2012) Caliskan, O.; Polat, A. A.This study was conducted over three harvest years to determine effects of Turkish fig genotypes grown in the eastern Mediterranean region of Turkey on phytochemical and fruit quality characters. Fruit quality characters such as fruit weight, fruit width, fruit neck length, total soluble solids (TSS), pH, acidity, and TSS/acidity were examined. Total phenolics (TP), total anthocyanins (TA), antioxidant capacity (TAC), fructose (FRUC), glucose (GLUC), sucrose (SUC), and variables describing fruit skin and flesh colors (L*, a*, C, and h(0)) were also determined. Analysis of the data obtained from 12 fig genotypes, and three harvest years demonstrated a highly significant influence of genotype on phytochemical and fruit quality characters. 'Bursa Siyahi', which has dark black fruit skin, had the highest levels of TA (113.6 mu g cy-3-rutinoside g(-1) fw), TP (105.2 mg GAE/100 g fw), and TAC (10.9 mmol Fe2+ kg(-1) fw). Three yearly averages of fruit weight ranged from 22.8 g ('Sari Incir') to 57.5 g ('Bursa Siyahi'), and ostiole width ranged from 0.9 mm ('Bursa Siyalu') to 3.7 mm (31-IN-16). These results indicate that TP (r = 0.77) contents correlated moderately to TAC, more so than with TA (r = 0.56). Both FRUC and SUC were negatively correlated with TA (r = -0.34 and r = 0.42, respectively). These data demonstrate that genotype is the main influence on the phytochemical and fruit quality characters of figs.Öğe The Effects of Modified Atmosphere Packaging on Quality of Loquat Fruits(Int Soc Horticultural Science, 2011) Candir, E.; Polat, A. A.; Ozdemir, A. E.; Caliskan, O.; Temizyurek, F.Loquat fruits cultivars 'Gold Nugget' and 'Sayda' were over-wrapped with 12.5 mu-, 14 mu-, or 16 mu-thick PVC films and kept at 0 degrees C for 60 days. Percent weight loss, skin color (L*, hue angle), firmness (N), total soluble solids (%TSS), titratable acidity (%TA), physiological and fungal disorders were determined immediately after harvest and at 15-day intervals. Over-wrapping with 12.5 mu-thick PVC film resulted in higher weight loss in both cultivars. Incidence of skin browning was higher in fruits over-wrapped with 16 mu-thick PVC films. Skin browning and decay and off-flavor limited storage life. Storage life of 'Gold Nugget' and 'Sayda' loquat fruits over-wrapped with PVC films could be stored for 30 days at 0 degrees C.Öğe Effects of Planting Densities on Fruit Quality and Productivity of Loquat(Int Soc Horticultural Science, 2011) Polat, A. A.; Caliskan, O.The Turkish Mediterranean region has the most suitable ecological conditions for growing loquat. In 2008, 96% of total loquat production of Turkey was from the coastal zone of the Mediterranean region. A density study was conducted in Hatay, which is located in the eastern Mediterranean coast of Turkey during 2004-2006 years. 'Hafif Cukurgobek', 'Sayda' and 'Gold Nugget' loquat cultivars were propagated by budding in 1996, planted at three densities (3x3, 3x6 and 6x6 m) in May 1997 in an experimental orchard, and pruned to an open-centre system. Phenological and pomologaical data were collected on first blooming, full bloom and end of flowering, fruit weight, fruit length and width, seed number, edible fruit, TSS, pH and acidity, and yield per tree and per unit area were determined. With increasing planting density, yields per tree decreased while cumulative yields per hectare increased.Öğe Fruit characteristics of table fig (Ficus carica) cultivars in subtropical climate conditions of the Mediterranean region(Taylor & Francis Ltd, 2008) Polat, A. Aytekin; Caliskan, O.Fig (Ficus carica) is one of the most important fruit species of Mediterranean countries. Turkey is one of top countries in the world for the production of various cultivars of fig. In this study, fruit quality characteristics of some fresh fig cultivars ('Bursa Siyahi', 'Yediveren', 'Sari Zeybek', 'Goklop', 'Morguz', 'Yeilguz') and 01-IM-02 genotype were determined in Kirikhan County' Hatay, Turkey, which has a Mediterranean climate. Several pomological characteristics of the genotype and cultivars were determined on 5-year-old trees during the 2001-03 growing season. Averaged over the 3 years, fruit weight was determined between 30.0 and 52.4 g; fruit width between 35.8 and 48.4 mm; fruit length between 36.2 and 48.3 mm; neck length between 3.1 and 7.2 mm; ostiole width between 0.8 and 2.4 mm; total soluble solid contents (TSS) between 22.7 and 27.2%; pH between 4.8 and 5.3; titratable acidity between 0.20 and 0.38%; and TSS/acidity between 75.4 and -139.0. Yield values ranged from 0.42 to 2.83 kg/tree. 'Yediveren 'Goklop', and 'Bursa Siyahi' Cultivars and 01-IM-02 genotype produced the largest fruits in terms of fruit weight and fruit dimensions. 01-IM-02, 'Bursa Siyahi', and 'Yediveren' scored the highest in overall quality according to the weighted ranked method. The objective colour measurements determined the differences between fruit skin colour and flesh colour of fig cultivars and genotype. According to data obtained, 01-IM-02, 'Bursa Siyahi', and 'Yediveren'Öğe Fruit Quality and Yield Characteristics of Some Loquat Genotypes in Dortyol, Turkey(Int Soc Horticultural Science, 2011) Polat, A. A.; Caliskan, O.We studied the phenological, pomological and yield characteristics of 11 cultivars of loquat (Erioborya japonica Lindl.) ('Hafif Cukurgobek', 'Sayda', 'Gold Nugget', 'Ottowianni', 'Lapta B2', 'Baduna 5', 'Guzelyurt 1', 'Sampiyon', 'Lapta M', 'Akko XIII' and 'Lapta 1') between 2003 and 2006 under the Mediterranean climate in Dortyol, Hatay, Turkey. 'Sayda' was the earliest, while 'Sampiyon' was the latest. Highest fruit size was obtained from 'Guzelyurt 1', whereas the smallest fruit size from 'Akko XIII' and 'Sampiyon'. Mean seed weight ranged between 1.3 and 3.0 and average number of seeds per fruit ranged between 2.1 and 4.1. The edible fruit in 'Hafif Cukurgobek' was significantly higher than others. 'Lapta 1' and 'Lapta M' (14.2 and 13.3%, respectively) had the highest total soluble solids content while ` Akko XIII' (8.68%) had the lowest. The highest cumulative both yield per tree and yield per hectare were obtained from 'Sampiyon' with 227.1 kg/tree and 63.1 ton/ha, respectively. The results suggest that these genotypes can be successfully grown in a Mediterranean climate.Öğe Fruit Set and Yield of Apricot Cultivars under Subtropical Climate Conditions of Hatay, Turkey(Tarbiat Modares Univ, 2014) Polat, A. A.; Caliskan, O.Apricot (Prunus armeniaca L.) is a species particularly prone to erratic fruit set, and its flower bud drop has been repeatedly reported in different cultivars and growing conditions. A number of potential causes have been explored, but a clear main cause remains elusive. In this study, fruit set was determined for 11 apricot cultivars ('Precoce de Tyrinthe', 'Feriana', 'Beliana', 'Priana', 'Bebeco', 'Early Kishinewski', 'Precoce de Colomer', 'Canino', 'Silistre Rona', 'Rouge de Sernhac' and 'Tokaloglu') grown on the coast of the Mediterranean region of Turkey from 2006 to 2008. Trees budded on apricot seedlings and planted 6x6 m in 1997. On four branches of each tree randomly selected from all four directions, blossom number, percentage of initial and final fruit set, and yield per tree were determined during the experimental period. Fruit set differed significantly depending on year and cultivar. Based on three-year averages, percentage of fruit set was highest on 'Tokaloglu' (14%), followed by 'Beliana' (8.8%) and 'Precoce de Tyrinthe' (8.2%). The lowest fruit set (2.3%) was in 'Early Kishinewski' and 'Canino'. High yields per tree were found in Tokaloglu' (29.1 kg), 'Precoce de Tyrinthe' (29.0 kg), 'Rouge de Sernhac' (27.9 kg), and 'Beliana' (23.0 kg). 'Tokaloglu', 'Beliana', 'Precoce de Tyrinthe', and 'Rouge de Sernhac' cultivars showed good performance for both fruit set and yield per tree under subtropical climate conditions. However, findings of this study also suggested that fruit set and fruit drops in apricots should be assessed together with total yield amounts by years. The influence of the cultivar on fruit yield was more determinant than the seasonal effect.Öğe Fruit Yield and Quality Performance of Low Chilling Nectarine Cultivars under Mediterranean Climate(Tarbiat Modares Univ, 2024) Caliskan, O.; Kilic, D.; Bayazit, S.This study was carried out to investigate fruit yield and quality characteristics among new nectarine cultivars grown in the eastern Mediterranean region of Turkey. 'Gardeta', 'Gartario', and 'Garofa' nectarine cultivars were cultivated on 'GN15' rootstock. The flowering stage, fruit set percentage, yield, and fruit quality properties of these cultivars were investigated between 2018 and 2021. During the study, chill requirements ranged between 391 and 600 chilling hours and between 207 and 361 chill units in the area, and huge values were obtained for the average initial fruit set above 60% and the final fruit set above 45%. 'Gardeta' had the highest cumulative yield per tree (80.15 kg tree-1) and cumulative yield per hectare (133.04 tons ha(-1)). The fruit size, Total Soluble Solids (TSS) content, and fruit coloration were homogeneously distributed in all three cultivars. In addition, the Flowering (F) and Initial Fruit Set (IFS) characters were negatively correlated with Fruit Weight (FW), Fruit Length (FLE), and Fruit Diameter (FD). As a result, the 'Gardeta' was found remarkable with late flowering, the highest yield, and superior fruit quality characteristics such as size, red skin color, and high TSS/total acidity values in the eastern Mediterranean region of Turkey. In addition, the date of Full Flowering (FF) and Fruit Firmness (FF) were negatively correlated with fruit Skin color L* (SL), C (SC), and h degrees (SH) variables. The results demonstrated that the new nectarine cultivars used here showed changes in yield parameters and fruit quality attributes depending on the genotypic and environmental effects.Öğe Molecular characterization of autochthonous Turkish fig accessions(Spanish Natl Inst Agricultural & Food Research & Technolo, 2012) Caliskan, O.; Polat, A. A.; Celikkol, P.; Bakir, M.Turkey is one of the main genetic centers for fig tree, Ficus carica L. The genetic variabilities of 76 fig accessions from Hatay province of Turkey were evaluated by analysis of 10 simple sequence repeats (SSR) loci. The number of alleles revealed by SSR analysis ranged from 3 to 12 alleles per locus with a mean value of 6.8. A total of 68 alleles were detected by SSR and the average heterozygosity was higher than the expected one. In addition, seven random amplified polymorphic DNA (RAPD) primers detected a total of 68 clear and reproducible bands, 55 of which were polymorphic, so it was possible to effectively characterize these fig accessions with either marker techniques. In both marker systems, Mantel's correlation between similarity scores and cophenetic values was moderately high (0.90 for RAPD and 0.87 for SSR), which demonstrated that the clustering patterns fitted the data well. The clusters obtained using these types of markers were independent. This study indicated that there is great genetic variability among local fig accessions, making them a valuable genetic source for incorporation into potential breeding programs especially for table fig selections.Öğe Morpho-pomological and Chemical Diversity of Pomegranate Accessions Grown in Eastern Mediterranean Region of Turkey(Tarbiat Modares Univ, 2013) Caliskan, O.; Bayazit, S.Selecting within local pomegranate accessions is the main method used to identify new cultivars. Total of 76 pomegranate accessions from Hatay, Turkey, were collected and their morpho-pomological and chemical characteristics were determined. The results showed that there was significant diversity among the accessions in terms of fruit quality parameters. Several accessions were notable for their various characteristics. For example, 'Eksi 5', 'Eksiliknar', 'Kara Mehmet 1', 'Lifani 5' and 'Eksi 3' accessions could be used for extracted aril and juice as they had dark red arils and juice, good taste, and large arils. In addition, the sweet accessions 'Tatli 3', 'Tatli 13', and 'Tatli 16' with soft seeds, rosy peel, and red aril colors were very promising for fresh consumption. Our study demonstrated that there was great morpho-pomological variability among the local pomegranates grown in eastern Mediterranean region of Turkey, making them a valuable genetic source for incorporation into potential breeding programs, especially for different fruit quality characteristics.Öğe Performance of some peach and nectarine cultivars under east Mediterranean (Hatay/Turkey) conditions(International Society for Horticultural Science, 2012) Polat, A.A.; Caliskan, O.; Kamiloglu, O.Production of peach and nectarine (Prunus persica) in the East Mediterranean region (Turkey) has increased during recent years, requiring information on the performance of modern cultivars in the region. Thus, a long-term project was conducted to investigate bloom date, harvest date, fruit quality, and yield of various peaches and nectarines under the conditions of the East Mediterranean region during 2002 to 2006. 'Early Red', 'Redhaven', 'Dixired', 'Washington', 'J.H. Hale' peach cultivars and 'Cherokee', 'Independence', 'Nectared 4', 'Nectared 6', 'Nectared 8' nectarine cultivars were used in this study. The analysis of average response over four years indicated that 'Early Red' both bloomed (21 March) and was harvested earlier (6 June) than the other peach cultivars, while 'Cherokee' and 'Independence' were harvested earlier (15 June) than the other nectarine cultivars. Averaged over four years, fruit weight was determined at between 84.5 and 130.1 g; flesh/seed ratio between 8.0 and 15.2; total soluble solids (TSS) between 10.0 and 13.1%; pH between 3.27 and 3.52; titratable acidity between 0.58 and 0.83% for peaches and fruit weight was determined between 36.7 and 83.1 g; flesh/seed ratio between 5.8 and 7.7; TSS between 11.4 and 13.4%; pH between 2.95 and 3.49; titratable acidity between 0.86 and 1.40% for nectarines. Yield values ranged from 8.8 kg/tree ('J.H. Hale') to 20.8 kg/tree ('Dixired') for peaches, and 7.4 kg/tree ('Nectared 4') and 14.3 kg/tree ('Cherokee') for nectarines. Overall, 'Redhaven', 'Early Red' and 'Dixired' peaches, plus 'Cherokee' and 'Independence' nectarines showed satisfactory to good performance in this long-term evaluation.
