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Embryogenic tissues (ET) of Turkish red pine (Pinus brutia TEN) were initiated from immature precotyledonary zygotic embryos sampled from 15 different plus trees. Seven collections were made weekly from June 10 to July 22, 2003. DCR basal medium supplemented with 13.6 μM 2,4–dichlorophenoxyacetic acid (2,4-D) and 2.2 μM benzylaminopurine (BAP) was used for(More)
 The effects of cold pretreatment, AgNO3 and activated charcoal on haploid plant production from unpollinated sugar beet ovules were investigated. Both cold pretreatment and the addition of charcoal increased the frequency of embryo formation, whereas AgNO3 decreased or completely inhibited it. Colchicine (50, 100, 150 or 500 mg l–1) and trifluralin (1.7,(More)
To test how efficiently plantations and seed orchards captured genetic diversity from natural Anatolian black pine (Pinus nigra Arnold subspecies pallasiana Holmboe) seed stands, seed sources were chosen from 3 different categories (seed stands (SS), seed orchards (SO) and plantations (P)) comprising 4 different breeding zones of the species in Turkey.(More)
To determine magnitude and pattern of genetic variation, 32 Turkish corn accessions available from the USDA/ARS North Central T-Regional Plant Introduction Station (NCRPIS) collections (Ames, Iowa), representing pop, flint and dent corn races, different climatic, geographic and topographic areas in Turkey, were identified and, 19 isozyme systems were(More)
The establishment of cell suspension culture from the callus of sugar beet (Beta vulgaris L.) breeding lines and plant regeneration from suspension-derived callus are described in this study. Using different concentrations and combinations of BAP and 2,4-D, the growth patterns of cell suspension cultures were examined during a range of culture periods (0,(More)
We tested the hypothesis that intermittent (lammas) shoot growth in Douglas-fir (Pseudotsuga menziesii var menziesii (Mirb.) Franco) seedlings from dry regions of southwest Oregon is adaptively significant. Seedlings from open-pollinated families (160 total) from two inland (dry) and two coastal (wet) sources were grown under either well-watered or(More)
The objective of this study was to investigate development of an efficient in vitro tissue culture system for saffron (Crocus sativus L.) complete with roots and corms. In indirect organogenesis, Murashige and Skoog (MS) media with 3% (w/v) sucrose, 100 mg L−1 ascorbic acid, and the combination of 0.25 mg L−1 2,4-dichlorophenoxyacetic acid (2,4-D) and 1 mg(More)
To help in the clarification of the taxonomic status of Elymus L. and related genera Agropyron Gaertn., Leymus Hochst., Hordelymus (Jess.) Harz, and Brachypodium P.Beauv., the sequence diversity in the internal transcribed spacer (ITS) region of nuclear ribosomal DNA was studied. ITS data of 64 Triticeae accessions including 40 Elymus, 12 Agropyron, 7(More)
Ayten DIZKIRICI TEKPINAR, Seher KARAMAN ERKUL, Zeki AYTAÇ, Zeki KAYA* Department of Molecular Biology and Genetics, Faculty of Science, Yüzüncü Yıl University, Van, Turkey Department of Biological Sciences, Middle East Technical University, Ankara, Turkey Department of Biology, Faculty of Science and Arts, Aksaray University, Aksaray, Turkey Department of(More)