Browsing by Author "Eyduran, S. Peral"

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Adaptation of Eight American Blackberry (Rubus Fructicosus L.) Cultivars for Central Anatolia
(Academic Journals, 2008) Eyduran, S. Peral; Eyduran, Ecevit; Khawar, Khalid Mahmood; Agaoglu, Y. Sabit
Blackberry is an important fruit plant cultivated for its delicious fruit throughout Europe and America. Although the fruit has wide acceptance in Turkey, it is not cultivated on large scale. The study aimed to evaluate the performance of Arapaho, Black Satin, Cherokee, Chester Thornless, Dirksen Thornless, Jumbo, Navaho and Loch Ness cultivars of American origin for adaptation under Central Anatolian conditions at Ankara during 2002-06. The results showed that changes in the environmental conditions affected yield, performance of number of canes, cane length, cane diameter, yield per plant, fruit weight and total acid content (g/l) significantly. Overall comparison of the results showed that cv. Chester Thornless is most suitable for the environmental conditions of Central Anatolia.
Ankara (Ayaş) Koşullarında Yetiştirilen Böğürtlen Çeşitlerinin Bazı Bitkisel Özellikleri
(2007) Eyduran, S. Peral; Ağaoğlu, Y.sabit; Özdemir, Taner
2002-2006 yılları arasında Ankara (Ayaş) ekolojisinde yetiştirilen 12 böğürtlen çeşidinin (Arapaho, Boysenberry, Black Satin, Bursa 1, Bursa 2, Bursa 3, Cherokee, Chester Thornless, Dirksen Thornless, Jumbo, Navaho ve Loch Ness) bitkisel özelliklerinden; bitki başına düşen sürgün sayısı, sürgün çapı, sürgün boyu ve sürgün başına düşen verim miktarları hesaplanıp, bulunan değerler birbirleriyle karşılaştırılmıştır. Sürgün sayısı, sürgün boyu ve sürgün çapı özellikleri için, “Tekrarlanan Tesadüf Parselleri Deneme Deseni”nde varyans analizi (12x5x3) uygulanmıştır. Sürgün başına düşen verim kriterinde ise Boysenberry çeşidinden ürün alınamadığı için yine “Tekrarlanan Tesadüf Parselleri Deneme Deseni”nde varyans analizi (11x5x3) uygulanmıştır.Araştırma sonuçlarına göre; sürgün sayısı bakımından Boysenberry, Jumbo ve Cherokee çeşitlerinin en fazla sürgün veren çeşitler; sürgün boyu bakımından Cherokee, Chester Thornless ve Arapaho çeşitlerinin en fazla sürgün boyuna sahip çeşitler; sürgün çapı bakımından, Chester Thornless, Arapaho ve Navaho çeşitlerinin en fazla sürgün çapına sahip çeşitler; sürgün verimliliği bakımından, Chester Thornless, Navaho ve Bursa 2 çeşitlerinin en verimli çeşitler olduğu bulunmuştur.Sonuç olarak, bitkisel özellikleri üzerine yıl, çeşit ve çeşit x yıl interaksiyon faktörlerinin etkileri oldukça önemli bulunmuştur (P<0.0001).
Ayaş Koşullarında Yetiştirilen Böğürtlen Çeşitlerinin Bazı Pomolojik Özelliklerinin Karşılaştırılması
(2007) Ağaoğlu, Y.sabit; Eyduran, Ecevit; Eyduran, S. Peral
Öz: Ankara (Ayaş) ekolojisinde 5 yıl boyunca yetiştirilen 11 böğürtlen çeşidinin (Arapaho, Black Satin, Bursa 1, Bursa 2, Bursa 3, Cherokee, Chester, Dirksen Thornless, Jumbo, Navaho ve Ness) pomolojik özelliklerinden; meyve ağırlığı, toplam asit ve suda çözünebilen kuru madde miktarları mukayese edilmiştir. Her pomolojik özellik için çalışmada elde edilen verilere “Tekrarlanan Tesadüf Parselleri Deneme Deseni”nde varyans analizi (11x5x3) uygulanmıştır. Yapılan analizlerde, pomolojik özellikleri üzerine yıl, çeşit ve çeşit x yıl interaksiyon faktörlerinin etkileri oldukça önemli bulunmuştur (P<0.0001). İnteraksiyona ilişkin alt-grup karşılaştırmalarında, aynı yıl içinde çeşitler arasındaki farklar değerlendirmeye alınmıştır. Bunun sonucunda, meyve ağırlığı bakımından Chester, Dirksen Thornless ve Jumbo çeşitlerinin en fazla meyve ağırlığına sahip çeşitler; toplam asitlik bakımından Dirksen Thornless, Bursa 2 ve Ness çeşitlerinin en fazla asitliğe sahip çeşitler olduğu; suda çözünebilen kuru madde miktarı açısından Bursa 2, Navaho ve Chester çeşitlerinin en fazla suda çözünebilen kuru madde miktarına sahip oldukları bulunmuştur. Sonuç olarak, pomolojik özelliklerde oluşan farklılık; i) çeşitler arasındaki farklılıktan, ii) yıllar boyunca oluşan ekolojik farklılıktan ve iii) çeşit ile yıllar boyunca oluşması muhtemel ekolojik etkiler arasındaki interaksiyondan kaynaklanmaktadır.
Comparison of Some Pomological Characteristics of Blackberry Cultivars Growth in Ayas Conditions
(Ankara Univ, Fac Agr, 2007) Agaoglu, Y. Sabit; Eyduran, S. Peral; Eyduran, Ecevit
The aim of this study was to compare each other in place of fruit weight, total acid and soluble solid contents of pomological characteristics of 11 blackberry cultivars (namely, Arapaho, Black Satin, Bursa 1, Bursa 2, Bursa 3, Cherokee, Chester, Dirksen Thornless, Jumbo, Navaho and Ness) cultivated in Ankara (Ayas) ecology during 2002-2006. Analyses of Variance at Repeated Random Complete Design (11x5x3) were applied for data regarding each pomological characteristics. According to the analyses, the effects of year, cultivar, and cultivar by year interaction on the pomological characteristics were much more significant (P<0.0001). Comparisons of sub-group for cultivar by year interaction were evaluated between cultivars in the same year. As to the study results, it were suggest that Chester, Dirksen Thornless and Jumbo were found having the largest fruit weight; Dirksen Thornless, Bursa 2 and Ness were cultivars having the largest total acid; Bursa 2, Navaho ve Chester were cultivars that had soluble solid contents. As a result, variation in pomological characteristics resulted from i) variation between cultivars ii) ecological variation during years iii) likely ecological effects consisted of cultivar by year interaction.
Estimation of Fruit Weight by Cane Traits for Eight American Blackberries (Rubus Fructicosus L.) Cultivars
(Academic Journals, 2008) Eyduran, S. Peral; Eyduran, Ecevit; Agaoglu, Y. Sabit
The present paper aimed to estimate fruit weight by their cane traits (the number of cane, cane height, cane diameter, and cane yield) for eight American blackberry cultivars (namely, Ness, Cherokee, Arapaho, Chester Thornless, Navaho, Black Satin, Dirksen Thornless and Cv. Jumbo) grown in Central Anatolia during 2002 - 2006. For this aim, average of fruit weight (dependent variable) for each cultivar was estimated by independent variables such as the number of cane, cane height, cane diameter, and cane yield in Multiple Regression Analysis (MRA). With respect to determination coefficients for each cultivar, it is clear that cultivars having the best fit (giving the best R-2 values) in MRA were found to be Black Satin (99.40%), Ness (99.16%), Navaho (96.46%), Dirksen Thornless (96.22%), Chester Thornless (91.92%), and Cv. Jumbo (91.26%), which meant that most (almost 100%) variation in fruit weight for these cultivars was explained by the number of cane, cane height, cane diameter, and cane yield. However, corresponding values for Arapaho and Cherokee cultivars was estimated as 2.88% and 33.2% of the total variation in fruit weight. It was concluded that number of canes had positive-significant effect on fruit weights of Dirksen Thornless (P < 0.001) and Cv. Jumbo (P < 0.01), but negative-significant effect on that of Black Satin (P < 0.001). Cane height had positive-significant effect on fruit weights of Black Satin (P < 0.001) and Ness (P < 0.001) cultivars, but negative-significant effect on cv. Chester Thornless (P < 0.001) and Dirksen Thornless (P < 0.01). Cane diameter had positive-significant effect on fruit weights of Black Satin (P < 0.001) and Chester Thornless (P < 0.01), Navaho (P < 0.05), Ness (P < 0.01) cultivars, whereas it had negative-significant effect on cv. Jumbo (P < 0.05). Cane yield had positive-significant effect on fruit weight of only Cv. Jumbo, but negative-significant effect on cv. Black Satin (P < 0.001), Chester Thornless (P < 0.01), Dirksen Thornless (P < 0.001), Navaho (P < 0.001) and Ness (P < 0.001). It was concluded that cane traits with the positive and negative effect on fruit weight provide useful clues for breeding proposes to improve fruit weight.
Estimation of Fruit Weight by Cane Traits for Various Raspberries (Rubus Ideaus L.) Cultivars
(Academic Journals, 2008) Eyduran, S. Peral; Eyduran, Ecevit; Agaoglu, Y. Sabit
Raspberries are an important commercial fruit crop, widely grown in all temperate regions of the world. The raspberries contain significant amounts of polyphenol antioxidants such as anthocyanin pigments linked to potential health protection against several human diseases. The aim of this study was to estimate fruit weight by their cane traits (the number of canes, cane height, cane diameter, and cane yield) for Aksu Red, Canby, Heritage I, Heritage II, Holland Dwarf, Nuburg, Rubin, Summit, Tulameen, and Willamette cultivars grown in Central Anatolia region during 2002 - 2006. For this aim, average fruit weight (dependent variable) for each cultivar was estimated by independent variables such as the number of cane, cane height, cane diameter, and cane yield using Multiple Regression Analysis (MRA). The results clearly show that cultivars having the best fit (giving the best R-2 values and the lowest RMSE) in MRA were: Holland Dwarf (99.64%), followed by Heritage I (99.06%), Summit (98.6%) Aksu Red (92.82%), Willamette (92.68%), Heritage I (90.46%), Rubin (90.28%) and Canby (85.45%). Multiple Regression Modeling gave good results for these cultivars. However, R2 values of these cultivars were found higher (better fit) than those of Nuburg and Tulameen cultivars. It was concluded that the number of canes had significant negative effect on fruit weights of Heritage (P < 0.05) and Summit (P < 0.001) cultivars, but significant positive effect on only fruit weight of Rubin cultivar (P < 0.05). Cane height had significant positive effect on fruit weights of Aksu Red (P < 0.001), and Summit (P < 0.001) cultivars, while it had significant negative effect on fruit weights of Canby (P < 0.05) and Heritage I (P < 0.05). Cane diameter had significant positive effect on fruit weights of Aksu Red (P < 0.001), Heritage I (P < 0.001), and Tulameen (P < 0.05) cultivars. Cane yield had significant positive effect on fruit weights of Canby (P < 0.05), Heritage I (P < 0.001), Heritage II (P < 0.05), Holland Dwarf (P < 0.001), Summit (P < 0.001) and Willamette (P < 0.01) cultivars, but significant negative effect on only fruit weight of Aksu Red cultivar (P < 0.01). The effects of cultivar, year, and cultivar by year interaction for fruit weight and all cane traits were statistically significant (P < 0.001). As a result, cane traits with the positive and negative effect on fruit weight for each cultivar might provide valuable clues for breeding proposes to improve fruit weight.