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    The grafting success of fourteen genotypes grafted on three different rootstocks on production of sweet cherry (Prunus avium L.) sapling
    (Wydawnictwo Akad Rolniczej W Lublinie, 2017) Zenginbal, Hamdi; Demir, Taki; Demirsoy, Hüsnü; Beyhan, Ömer
    This study was conducted in Canakkale Province, Bayramic County between 2011 and 2013. The aim of this study was to determine the best rootstock x genotype combination by grafting 14 standard and local sweet cherry genotypes cultivated in Amasya Province on Mazzard, Gisela 5 and Gisela 6 rootstocks with T-budding method. Graftings were conducted on August 15th in both years. Following the grafting, the average daily temperature and relative humidity values in addition to bud sprout ratios and graft shoot lengths and diameters were examined. The experiment location was suitable for fall T-budding based on obtained climate data. The results of research showed that cherry genotypes and rootstocks had significant effects on bud sprout ratio. The best bud sprout rates among the sweet cherry genotypes and rootstocks were obtained from 'Kargayuregi' genotype (100%) and Gisela 6 rootstock (91.4 and 94.5%, respectively) in both year. Graft shoot lengths and diameters showed differences depending on genotypes and rootstocks. Among the sweet cherry genotypes and rootstocks, the best graft shoot length were obtained from 'Kargayuregi' genotype and Gisela 5 rootstock in both year. The highest graft shoot diameter values among the sweet cherry genotypes and rootstocks were obtained from 'Bing' genotype and Gisela 5 rootstock in both years. As a result, it was shown that the 14 sweet cherry genotypes cultivated in Amasya can be successfully grafted on Mazzard, Gisela 5 and Gisela 6 cherry rootstocks and that 1(st) and 2(nd) class sweet cherry saplings can be produced.
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    Physico-chemical and antioxidant characteristics in fruits of walnut (juglans regia L.) genotypes from Inner Anatolia
    (Univ Agr Sci & Veterinary Med Cluj-Napoca, 2016) Beyhan, Ömer; Gözlekçi, Şadiye; Gündoğdu, Muttalip; Ercişli, Sezai
    Walnut fruits are used for their nutrition properties for a long time in Anatolia, where seed propagated walnuts are naturally found, as solitary individuals or dense populations. Some relevant physico-chemical and antioxidant characteristics of fruits were determined for fifteen promising walnut (Juglans regia L.) selections (named 'G-1' to 'G-15') propagated from seeds. The well-known Turkish walnut cultivar 'Sebin' was included in the analysis as a standard in order to make comparison with seed propagated genotypes. The average fruit weight and kernel ratios ranged from 7.43 to 12.61 g and 45.10 to 57.83% among the studied genotypes, respectively. The chemical analyses showed that protein, crude oil, ash, carbohydrate and dietary fiber contents of the analyzed walnut genotypes were between 11.09-18.16%, 55.38-65.15%, 1.61-2.08%, 12.01-17.89% and 2.90-4.12%, respectively. Total phenolic content was found between 1,107-1,876 mg GAE/100 g among the genotypes and most of them had higher phenolic content compared with cv. 'Sebin'. The total tocopherols content ranged from 30.0 to 44.4 mg/100 g of the extracted oil. The most common tocopherol in all samples was gamma-tocopherol. The results obtained in the hereby study indicated that the seed propagated walnut trees can be very diverse and their nuts have a good potential for valuable sources of phytochemicals.
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    Response to heavy metals on pollen viability, germination & tube growth of some apple cultivars
    (Parlar Scientific Publications, 2017) Muradoğlu, Ferhad; Beyhan, Ömer; Sönmez, Ferit
    Heavy metal toxicity is one of the major abiotic stresses leading to hazardous effects in plants and pollen are among the most sensitive to atmospheric pollution. Both pollen germination and tube length are inhibited by adverse environmental conditions. Pollen grains from three apple (Gala, Fuji and Braeburn) cultivars were tested for determination of pollen quality (pollen viability, germination ability and tube length) and five types of Heavy metals (Cd, Co, Pb, Hg and Zn). Viability of the pollens were determined by TTC test. The pollen germination experiments were conducted in petri dishes in 10% sucrose, 0.01% boric acid and 22oC temperature for 3 hours. Among the cultivars highest pollen viability were recorded in Braeburn with 81.85%. Heavy metals lead to a significant decrease in pollen germination and tube length of apple cultivars. It was found that there were different cultivars with variable sensitivity to heavy metals on pollen germination and tube length. In general, increasing heavy metal treatments inhibited pollen germination and tube length in all cultivars. Among heavy metals mercury (Hg) had the highest toxic effect on pollen growth and tube length of all cultivars. Heavy metals have negative effect on reproduction of plant due to inhibition of pollen viability and germination. © by PSP.