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    A new species of Ornithogalum (Liliaceae) from South Anatolia, Turkey
    (BLACKWELL PUBLISHING, 2005) Uysal, T; Ertugrul, K; Dural, H
    Ornithogalum chetikianum Uysal, Ertugrul & Dural sp. nov. (Liliaceae) is described and illustrated from Anatolia, Turkey. The species grows on alpine steppe and stony places in Bozkir (C4 Konya province) in South Anatolia. It is closely related to O. nutans L. and O. demirizianum Malyer & M.Koyuncu, an endemic confined to South Anatolia. Diagnostic morphological characters are discussed. Notes are also presented on the ecology, biogeography and conservation status of the new species. (c) 2005 The Linnean Society of London.
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    Prediction of nutritive value of a native forage, Prangos uechritzii, using of in situ and in vitro measurements
    (ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2004) Gulsen, N; Coskun, B; Umucalilar, HD; Dural, H
    This study was carried out to determine the chemical composition, in situ dry matter (DM) degradability, in vitro digestibilities and metabolizable energy (ME) contents of Prangos uechtritzii at different stages of maturity (prebud, mid-flower and late flower) naturally grown in some and regions of Turkey. The proportion of leaf at mid- and late-flower decreased compared to prebud stage. Stage of maturity affected DM and crude protein contents of the P. uechtritzii and fractions. In the whole-plant, NDF and ADF concentrations increased with plant maturity as a result of increased stem ratio. The effective degradability of dry matter, in vitro dry matter digestibility, in vitro organic matter digestibility, and ME did not change greatly by stage of maturity. Compared to ordinary forages used in ruminant feeding, the forage nutritive value of P. uechtritzii was equal to or better. (C) 2003 Elsevier Science Ltd. All rights reserved.
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    Secondary metabolites from Centaurea isaurica from Turkey and their chemotaxonomical significance
    (PERGAMON-ELSEVIER SCIENCE LTD, 2004) Flamini, G; Stoppelli, G; Morelli, I; Ertugrul, K; Dural, H; Tugay, O; Demirelma, H
    The Turkish endemic species Centaurea isaurica (Asteraceae) has been studied for the first time to afford 10 known compounds. Identification by mean of spectroscopic techniques revealed the presence of beta-sitosterol 3-glucoside, protocatechuic acid, scopoletin, chlorogenic acid, jacein, centaurein, kaempferol-3-glucoside, quercetin 3-glucoside, arctiin and janerin. Its taxonomical classification is still uncertain being placed either in the Section Pseudoseridia or Cheirolepis. The secondary metabolites isolated in this investigation, janerin in particular, seem to suggest its placement in Section Pseudoseridia. (C) 2004 Elsevier Ltd. All rights reserved.