Yazar "Ozturk, Meryem" seçeneğine göre listele
Listeleniyor 1 - 12 / 12
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Aethionema anatolica (Brassicaceae), a new species from South Anatolia, Turkey(FINNISH ZOOLOGICAL BOTANICAL PUBLISHING BOARD, 2013) Karabacak, Osman; Ozturk, Meryem; Duran, AhmetAethionema anatolica A. Duran & M. Ozturk sp. nova (Brassicaceae) is described and illustrated from South Anatolia, Turkey. It is similar especially to A. demirizii, but differs by the habit, crenate margin of the fruits, and the style that is around the same size as the sinus.Öğe Anatomy, palynology and nutlet micromorphology of Turkish endemic Teucrium sandrasicum (Lamiaceae)(VERSITA, 2008) Dinc, Muhittin; Duran, Ahmet; Pinar, Muenevver; Ozturk, MeryemIn this study, the anatomical features of the leaf and stem, besides the pollen and nutlet characteristics of Teucrium sandrasicum are investigated. T. sandrasicum, belonging to sect. Teucrium, is an endemic perennial herb growing on serpentine around Mugla province. The anatomical studies on T. sandrasicum revealed that the stem shares the general characteristics of the Labiatae family. The leaves clearly exhibit xeromorphy due to features such as the distribution of stomata on the lower surface (hipostomatic), the occurrence of guard cells below the epidermis (xeromorphic type), inrolled margins, thick cuticle layer, thick outer epidermal cell wall, a high density of trichomes and thick palisade layer of the mesophyll. The anatomical studies showed that the upper epidermal cells of the leaf include many spherocrystals. The pollen grains are prolate, medium in size, 3-colpate with verrucate ornamentation. The nutlets are ellipsoid with a reticulate-verrucate surface. The results have proven that T. sandrasicum is different from the other species of the sect. Teucrium because of the branched trichomes on the stem and the lack of eglandular trichomes on the nutlets.Öğe Asperula anatolica (Rubiaceae), a new species from south-east Anatolia, Turkey(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2013) Ozturk, MeryemA new species, Asperula anatolica M.Ozturk (Rubiaceae), is described from south-east Turkey. A. anatolica grows on limestone bedrock, in Uludere District (C9 Sirnak Province). It is an endemic confined to south-east Anatolia, and it is related to A. comosa Schonb.-Tem in the section Cruciana. Asperula anatolica is distinct from a closely allied species, A. comosa, by its inflorescence, indumentum, corolla lobes and shape, bracts, bracteoles, internodes, seed coat surface, and pollen grains. Photos of the new species are provided, and observations on the population are discussed. Special attention is also given to its ecology and conservation status. In addition, pollen characteristics and mericarp surface features are examined by scanning electron microscope. The geographical distribution of A. anatolica and other related species are mapped.Öğe Bilacunaria anatolica sp nov (Apiaceae) from southwest Anatolia, Turkey(WILEY-BLACKWELL, 2011) Duran, Ahmet; Ozturk, Meryem; Ay, HilalA new species, Bilacunaria anatolica A. Duran (Apiaceae) is described and illustrated from southwest Turkey. The species grows on eroded marly stony slopes and in openings of Pinus brutia forest in Fethiye district (C2 Mugla province). Bilacunaria anatolica, an endemic confined to southwest Anatolia, is related to B. microcarpa and B. scabra. It is also similar to the Mediterranean species Cachrys crassiloba and C. cristata in terms of habit, but differs in fruit characteristics. Diagnostic morphological and carpo-anatomical characters are discussed. Notes are also presented on ecology and conservation status. In addition, pollen characteristics and mericarp surface features are examined by SEM. The geographical distribution of the new species and related species is mapped.Öğe Cladistic and phylogenetic analyses of the genus Cicer in Turkey(SPRINGER WIEN, 2013) Ozturk, Meryem; Duran, Ahmet; Hakki, Erdogan E.Fifteen taxa of the genus Cicer L. growing naturally in Turkey and out-groups were classified by phylogenetic and cladistic analysis. Taxa of the genus Cicer and the out-group taxa belonging to the closest genera Phaseolus L., Vicia L., Lathyrus L. and Ononis L., which are placed in Phaseoleae, Vicieae and Ononideae tribes, respectively, were used in molecular studies in order to derive their phylogenetic relationships. Morphological, palynological and seed characters were used on the basis of 143 traits. The micromorphological characters of seed and pollen grains were revealed by SEM. Lathyrus L. and Vicia L. species were used as out-groups for numerical analysis. Ten specimens were used for the measurements of metric characters related to the morphological structures of the taxa used for statistical analysis via PAUP and NTSYS-pc packages. Phylogenetic relationships between species and populations of the same species growing in different locations and their variations were determined using molecular methods performed on regions of the Inter Simple Sequence Repeat (ISSR). DNA was isolated from the collected samples, using modified CTAB protocols. ISSR was used for phylogenetic fingerprinting. The data were analyzed with NTSYS-pc package. Standardized data were used to generate a dendrogram that revealed the phylogenetic relationships of the taxa. Geographic distribution of the Cicer taxa appears to be closely related to the Anatolian Diagonal. As a result of this study, four new endemic taxa were added and evaluated for the first time.Öğe Diplotaenia bingolensis (Apiaceae), new species from east Anatolia, Turkey(SPRINGER WIEN, 2015) Duran, Ahmet; Behcet, Lutfi; Ozturk, MeryemThe new species of Diplotaenia bingolensis M. Ozturk, A. Duran and Behcet (Apiaceae) is described from the eastern part of Turkey. D. bingolensis grows on the steppe, in the Sam Mountain (B8 Bingol province). It is an endemic confined to east Anatolia, and it is related with D. turcica. The new species is distinct from a closely allied species D. turcica by stem tall, ray number, peduncle long, leaves and mericarp features. The photos of the new species are provided. In addition, pollen characteristics and mericarp surface features are examined by SEM. A special attention is also given on its ecology, conservation status and observations on the population are discussed. 162 ISSR bands scored and ITS1-5.8S-ITS2 nrDNA region sequences were used to generate the dendrograms that revealed the phylogenetic relationships of the taxa. Three taxa of the genus Diplotaenia Boiss. and the out-group taxa belonging to the closest genera Johrenia DC., Dichoropetalum Fenzl. and Cymbocarpum DC. Ex C.A. Mey which are placed in Selineae, Tordylieae and Bupleureae tribes, respectively, were used to molecular analyses in order to characterize their phylogenetic relationships. The geographical distributions of all Diplotaenia species in the world are mapped.Öğe Globularia anatolica sp nov (Globulariaceae) from the Honaz Mountain National Park, southwest Turkey(WILEY-BLACKWELL PUBLISHING, INC, 2009) Duran, Ahmet; Cetin, Oezlem; Ozturk, MeryemA new species, Globularia anatolica A. Duran, O. Cetin & M. Ozturk (Globulariaceae) is described and illustrated from southwest Turkey. The species grows on eroded gypsum slopes and in open Pinus brutia Ten. forest in the Honaz Mountain National Park (C2 Denizli province). It is closely related to G. sintenisii Hausskn. & Wettst., an endemic species confined to southwest Anatolia. Diagnostic morphological characters of Globularia anatolica are discussed and presented as a key to Turkish Globularia. It is suggested that the new species should be regarded as 'Critically Endangered' (CR) according to the IUCN criteria. In addition, the biogeography of the Honaz Mountain is briefly outlined.Öğe Inula tuzgoluensis (Asteraceae), a new species from Central Anatolia, Turkey(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2013) Ozturk, Meryem; Cetin, OzlemThe new species Inula tuzgoluensis M.Ozturk & O.Cetin (Asteraceae) is described from Central Turkey. The species grows on salty marshes, in the Cihanbeyli District of Konya Province. Inula tuzgoluensis, an endemic confined to Central Anatolia, is related to I. aucheriana DC. The new species is distinct from the closely allied I. aucheriana by habitus, indumentums, leaves, flowers, pollen grains, and achenes. Photos of the new species are provided. Special attention is also given to its ecology and conservation status. In addition, pollen characteristics and achene surface features are examined by scanning electron microscopy. Phylogenetic relationships between closely related Inula species and Phagnalon Cass. were examined with molecular methods performed in the regions of the intersimple sequence repeats. DNA was isolated from the collected samples using modified CTAB protocols. The data were analysed with the PAUP package. Standardised data were used to generate the dendrogram that revealed the phylogenetic relationships of the taxa. The chromosome number for Inula tuzgoluensis was n = x = 9, it and was counted for the first time here.Öğe Jurinea cataonica subsp mardinensis subsp nov (Asteraceae) from southeast Anatolia, Turkey(WILEY-BLACKWELL, 2011) Dogan, Bekir; Duran, Ahmet; Ozturk, MeryemA new subspecies, Jurinea cataonica Boiss. & Hausskn. subsp. mardinensis B. Dog. an & A. Duran (Asteraceae), is described and illustrated from Anatolia, Turkey. The subspecies grows on abandoned fields in the Bakirkiri place (C8 Mardin Province) in southeastern Anatolia. It is morphologically similar to J. cataonica subsp. cataonica. Diagnostic morphological characters between these closely similar taxa are discussed and arranged in a key. Ecology and conservation status of the subspecies is also presented. In addition, the geographical distributions of the new subspecies and other related species are given.Öğe Phylogenetic and cladistic analyses of the enigmatic genera Bituminaria and Cullen (Fabaceae) in Turkey(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2015) Toksoy, Sezen; Ozturk, Meryem; Sagiroglu, MehmetThree taxa of the genus Psoralea L. growing naturally in Turkey and the outgroup taxa belonging to the closest genera Vicia L., Cicer L., and Astragalus L. were subjected to molecular and quantitative morphological analyses in order to characterize their phylogenetic relationships. Both the taxonomical and the molecular characteristics of the tribes Psoraleeae (Bituminaria Heist. ex Fabr., Cullen Medik.), Vicieae (Vicia), Astragalae (Astragalus), and Cicereae (Cicer) were clearly revealed for the first time with the inter-simple sequence repeat (ISSR) method. The phylogenetic relationships were determined with 253 ISSR band scores and 125 quantitative morphological character measurements. The numerical and molecular data sets were analyzed with NTSYSpc and Minitab software. Based on these data, the current circumscription of the genus Psoralea was reevaluated and compared with outgroups in Turkey. Consequently, the closely related genera of Bituminaria and Cullen clearly occur in Turkey instead of the genus Psoralea.Öğe Scorzonera aksekiensis sp nov (Asteraceae) from south Anatolia, Turkey(WILEY, 2013) Duran, Ahmet; Ozturk, Meryem; Cetin, OzlemScorzonera aksekiensis A. Duran & M. ozturk sp. nov. from the Akseki district (C3 Antalya province) in Turkey is described and illustrated. The diagnostic morphological characters of similar taxa are discussed. Scorzonera aksekiensis is related to S. semicana DC. from which it mainly differs in its habitus, indumentum, leaves, capitula and achenes. The ecology, biogeography and conservation status of the new species are also presented. The geographical distribution of S. aksekiensis and related species is mapped.Öğe Tragopogon anatolicus (Asteraceae), a new species from east Turkey(MAGNOLIA PRESS, 2014) Dogan, Bekir; Duran, Ahmet; Gultepe, Mutlu; Ozturk, Meryem; Coskuncelebi, KamilThe new species, Tragopogon anatolicus A. Duran, B. Dogan & Coskunc sp. nov. (Asteraceae) is described and illustrated from Cilo Mt. (Hakkari), south-east Anatolia, Turkey. Tragopogon anatolicus is a local endemic, most similar to T. buphthalmoides (DC.) Boiss. Diagnostic morphological characters of these two closely related taxa are discussed. A phylogenetic analysis based on nrDNA ITS sequence data indicated that T. buphthalmoides is the sister species of the new taxon. Ecology, biogeography and conservation status of the new species are also presented.
