Browsing by Author "Turna, İbrahim"

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    Genetic diversity among populations in Scotch pine (Pinus silvestris L.) seed stands of Western Black Sea Region in Turkey
    (Genetic diversity among populations in Scotch pine (Pinus silvestris L.) seed stands of Western Black Sea Region in Turkey”, African Journal of Biotechnology Vol. 9(43), pp. 7266-7272, 25 October., 2010) Şevik, Hakan; Ayan, Sezgin; Turna, İbrahim; Yahyaoğlu, Zeki
    The aim of this study was to determine the differences among some of the registered seed stands in the Western Black Sea Region in Turkey by means of the morphological characters. The number of 18 morphological characters were designated by measuring and observing on seed (seed length, seed width, seed color and 1000 seed weight), juvenile seedling (root length, hypocothyl length, epycotyl length, cotyledon number, cotyledon length, stem and root dry weight) and seedling (root-collar diameter, number of branches, bud number, stem length, root length, stem and root dry weight) from 9 seed stands in the Western Black Sea Region of Turkey. The obtained data was analyzed by using cluster and penrose analysis. Cluster and penrose analysis showed that there were significant differences within the Pinus sylvestris stands for the morphologic characters.
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    Genetic variation in Tertiary relics: The case of eastern-Mediterranean (Pinaceae).
    (2017-12-01T00:00:00Z) Hrivnák, Matúš; Paule, Ladislav; Krajmerová, Diana; Kulaç, Şemsettin; Şevik, Hakan; Turna, İbrahim; Tvauri, Irina; Gömöry, Dušan
    The eastern-Mediterranean taxa, which include both widely distributed species and taxa with minuscule ranges, represent a good model to study the impacts of range size and fragmentation on the levels of genetic diversity and differentiation. To assess the patterns of genetic diversity and phylogenetic relationships among eastern-Mediterranean taxa, genetic variation was assessed by eight nuclear microsatellite loci in 52 populations of taxa with a focus on those distributed in Turkey and the Caucasus. Both at the population and the taxon level, the subspecies or regional populations of s.l. exhibited generally higher allelic richness, private allelic richness, and expected heterozygosity compared with s.l. Results of both the structure analysis and distance-based approaches showed a strong differentiation of the two subspecies from the rest as well as from each other, whereas the subspecies of were distinct but less differentiated. ABC simulations were run for a set of scenarios of phylogeny and past demographic changes. For . × the simulation gave a poor support for the hypothesis of being a taxon resulting from a past hybridization, the same is true for : both they represent evolutionary branches of .
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    SERA VE AÇIK ALAN KOŞULLARININ ENSO TİPİ SARIÇAM (Pinus sylvestris L.) FİDANLARININ BAZI MORFOLOJİK KARAKTERLERİ ÜZERİNE ETKİLERİ
    (D. A. O. Araştırma Müdürlüğü Dergisi, Müdürlük Yayın No.9, 2000/1 No.3, s.64-76, Erzurum., 2000) Ayan, Sezgin; Turna, İbrahim; Acar, Cengiz
    Bu çalışmada, Of Orman Fidanlığı sera ve açık alan koşullarında üretilen 1+0 yaşlı Enso tipi tüplü Sarıçam (Pinus sylvestris L.) fidanlarının bazı morfolojik özellikleri belirlenmiştir. Aynı agregat kültüründe (%70 Barma turbası+%30 çay artığı kompostu) fertigasyonla dışarıdan beslenerek, değişik ortam koşullarında 1- Açık Alan, 2- Sera + Açık Alan, 3- Sera + Siper + Açık Alan yetiştirilen fidanların morfolojik kalite kriterleri üzerine etkileri araştırılmıştır. Tespit edilen morfolojik fidan karakterlerinin dikim standartlarına uygunluğu irdelendiğinde; fidan boyu, kök boğazı çapı, fidan kök-gövde taze ağırlıkları ve fidan kök-gövde kuru ağırlıkları bakımından sera + siper + açık alan ile sera + açık alan süreçlerinden geçirilen fidanların daha uygun olduğu tespit edilmiştir.