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    Determination of isozyme polymorphism in open-pollinated olive (Olea europaea L.) seedlings used as rootstock
    (International Society Horticultural Science, 2008) Seker, M.; Dulger, S.; Kaynas, N.; Yucel, Z.
    Some important olive cultivars like 'Domat' and 'Tavsan Yuregi' are commercially grafted on seedlings which are obtained from open-pollinated seeds of 'Uslu' olive cultivar, which usually produces morphologically uniform populations. In this study, seedling populations of 'Uslu' cultivar were evaluated for their isozyme genotypes. Starch gel electrophoresis for six isozyme systems including malate dehydrogenase (MDH), alcohol deshydrogenase (ADH), isocitrate deshydrogenase (IDH), phosphogluco mutase (PGM), phosphogluco isomerase (PGI) and peroxsidase (PRX) were investigated. Total loci and number of alleles were determined in 50 seedlings. Total 18 alleles were determined at 7 isoenzymatic loci. The seedlings were classified into 9 groups according to their isozyme profiles. ADH and MDH systems were monomorphic among the seedlings. However, PGI and IDH systems were polymorphic due to high level of heterozygosities. PGM and PRX systems exhibited only two isozyme genotypes among the seedlings. This study demonstrates that clonal rootstocks need to be used instead of seedlings for olive cultivars, which have to be grafted for propagation.
  • [ X ]
    Öğe
    The Effects of Different Pollinizers on the Fruit Set and Pomological Characteristics of '0900 Ziraat' Sweet Cherry
    (Int Soc Horticultural Science, 2008) Kaynas, K.; Sekar, M.; Yucel, Z.; Alkan, T.
    10900 Ziraat' is the leading sweet cherry (Prunus avium L.) cultivar with high quality fruit characteristics in Turkey. Despite its importance, pollination problems remain, resulting in poor fruit set in different ecological conditions of the country. The current research was aimed at determining the effects of different pollinizers on '0900 Ziraat' fruit set and fruit quality parameters. For this purpose, 'Premier Giant', 'Van', 'Stark's Cold', 'Celeste', 'Sunburst', 'Merton Late', 'Bing', 'Lapins', 'Bigarreau Gaucher', 'Sweetheart', 'Canada Giant', 'North Wonder', 'Burlat' and 'Lambert' were chosen as pollen sources. During the research, prebloom and full bloom dates in the Canakkale ecological conditions were recorded for 2002 and 2003. After fruit set, monthly determinations of fruit set percentage and cross compatibility were made. After the fruit ripened, they were analyzed for pomological characteristics such as fruit and stone weight, fruit size, pH, internal and external fruit coloration, stem length, titrable acidity and total soluble solids.