DSpace Arşivi :: by Yazar "Cetin, Ozlem" değerine göre listeleniyor

Yazar "Cetin, Ozlem" seçeneğine göre listele

Listeleniyor 1 - 11 / 11

Comparative morphological, anatomical, micromorphological, and palynological studies on the genera Opopanax and Crenosciadium (Apiaceae)
(MAGNOLIA PRESS, 2018) Cetin, Ozlem; Celik, Mustafa
In the present study, morphological, micromorphological, palynological and anatomical characteristics of the genera Opopanax and Crenosciadium are reviewed and compared. The genus Opopanax is distributed in southern Europe, the Mediterranean region and Western Asia, and it is represented by three species in Turkey. Crenosciadium is a poorly known monotypic genus from Turkey, recently treated as synonym in Opopanax. Expanded descriptions, phenology, geographic distributions, and images of habitus of Opopanax and Crenosciadium are given. The differences between the two genera are discussed. The pollen morphology of Opopanax and Crenosciadium is studied by SEM and LM. The palynological results confirmed the stenopalynous characteristic of the family Apiaceae, and revealed that the pollen grains of both genera are perprolate in shape. Also fruit surface ornamentation of both genera is typically striate, and epidermal cells are polygonal or elongated in one direction. Cross-sections of mature fruits are examined and a detailed anatomical description is presented. Mericarp shape and width are very useful characters for discrimination between Opopanax and Crenosciadium; mericarp ribs are also very significant characteristics to discriminate both genera. Our findings, together with previous molecular data, clearly indicate that Crenosciadium differs considerably from Opopanax, and therefore it should be accepted at genus rank.
A cytomorphological study in some taxa of the genus Salvia L. (Lamiaceae)
(FIRENZE UNIV PRESS, 2011) Martin, Esra; Cetin, Ozlem; Kahraman, Ahmet; Celep, Ferhat; Dogan, Musa
The taxa of the genus Salvia L. (Lamiaceae) used in this study were collected from their natural habitats in Turkey. In this paper, the number, size and morphology of somatic chromosomes of 22 Turkish taxa of Salvia, namely S. bracteata Banks & Sol., S. fruticosa Mill., S. huberi Hedge, S. hydrangea DC. ex Benth., S. nemorosa L. and S. pomifera L. (2n=14), S. adenocaulon P.H. Davis and S. aucheri Benth. subsp. canescens Boiss. & Heldr., (2n=18), S. argentea L., S. frigida Boiss., S. palestina Benth., S. poculata Nabelek and S. verticillata L. subsp. verticillata (2n=20), S. atropatana Bunge, S. cassia Sam. ex. Rech. f., S. chrysophylla Stapf, S. cyanescens Boiss. & Balansa, S. indica L. and S. limbata C.A.Mey. (2n=22), S. multicaulis Vahl (2n=28), S. virgata Jacq. (2n=32) and S. verbenaca L. (2n=60) were investigated. Somatic chromosome numbers ranged from 2n = 14 to 2n=60. The present results were compared with the previous cytological ones.
Inula tuzgoluensis (Asteraceae), a new species from Central Anatolia, Turkey
(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2013) Ozturk, Meryem; Cetin, Ozlem
The 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.
Karyological studies of Clinopodium L. (Sect. Pseudomelissa) and Micromeria Benth. s. str. (Lamiaceae) from Turkey
(UNIV FLORENCE BOTANY INST, 2011) Martin, Esra; Cetin, Ozlem; Dirmenci, Tuncay; Ay, Hilal
Using the squash method of preparation, somatic chromosome numbers were counted of Clinopodium cilicicum, C. congestum, C. dolichodontum, C. serpyllifolium subsp. barbatum, C. serpyllifolium subsp. brachycalyx, C. serpyllifolium subsp. giresunicum, C. serpyllifolium subsp. serpyllifolium, Micromeria cremnophila subsp. amana, M. cremnophila subsp. anatolica, M. cristata subsp. phrygia, M. cristata subsp. orientalis, M. elliptica, M. graeca subsp. graeca, M. juliana, M. myrtifolia, M. nervosa all of which grow naturally in Turkey. Chromosome numbers of 12 taxa are reported for the first time.
Morphological, palynological, seed-coat surface and karyological studies of Hesperis bicuspidata and H. stellata (Cruciferae) from Turkey
(WILEY, 2011) Duran, Ahmet; Unal, Fatma; Pinar, Nur Munevver; Cetin, Ozlem
The taxonomic delimitation of Hesperis bicuspidata (Willd.) Poir. and H. stellata F. Dvorak is problematic, and we therefore studied morphological, palynological, seed-coat surface and karyological features of both species to determine their degree of similarity. The morphology was described using 13 characters, each based on ten measurements on different specimens. Hesperis stellata and H. bicuspidata both show large variation in vegetative and reproductive organs; petal length varies between 18 and 26 mm and petal width is 37 mm; the corolla is lilac, whitish lilac, violet, dark violet or white in color, and fruits of both species are generally glabrous or have very short bifurcate hairs. Pollen and seed morphology were examined by LM and SEM. Pollen of both species is prolate-spheroid or subprolate, tricolpate and reticulate. Their exine structures are the same. Hesperis bicuspidata is diploid (2n=14) but different chromosome types were present in the two studied specimens. Hesperis stellata is tetraploid (2n=28) showing the same chromosome types as the samples of H. bicuspidata. Eighteen morphometrical characters of H. bicuspidata, H. stellata, H. pisidica and H. armena were analysed by ANOVA. Notes on ecology and distribution are also presented for H. bicuspidata. Based on the results, H. stellata is reduced to a synonym of H. bicuspidata.
New chromosome counts, karyotype analyses and asymmetry indices in some taxa of genus Senecio L. and related genera Tephroseris (Rchb.) Rchb. and Turanecio Hamzaoglu belong to tribe Senecioneae (Asteraceae) from Turkey
(SPRINGER WIEN, 2014) Altinordu, Fahim; Martin, Esra; Hamzaoglu, Ergin; Cetin, Ozlem
In this study, the somatic chromosome numbers and karyotype analyses were determined for nine taxa that belong to three different genera of Senecioneae tribe. The studied taxa are; Senecio tauricolus V.A. Matthews, Senecio racemosus (M.Bieb.) DC., Senecio paludosus L., Senecio trapezuntinus Boiss., Senecio inops Boiss. & Balansa subsp. inops, Turanecio pandurifolius (K.Koch) Hamzaoglu, Turanecio hypochionaeus (Boiss.) Hamzaoglu, Turanecio eriospermus (DC.) Hamzaoglu, Tephroseris integrifolia (L.) Holub. subsp. aurantiaca (Hoppe ex Willd.) B.Nord. S. tauricolus, S. trapezuntinus, S. inops subsp. inops and T. hypochionaeus taxa are endemic to Turkey. The chromosomal variability in the tribe Senecioneae has observed the existence of four chromosome numbers: 2n = 38, 2n = 40, 2n = 46 and 2n = 80. The chromosome number 2n = 38 is a new record for Turanecio species. All taxa existed karyotypes measured by a set of median to submedian chromosomes and a smaller number of subterminal chromosome pairs. Also their karyotype asymmetry indices (TF %, As K %, Syi, Rec, A, A(1) and A(2)) were calculated. The ideograms and detailed chromosome morphology measurements of the species were performed by the use of image analysis system (Bs200Pro). This is the first account of somatic chromosomes and karyotypes for the studied taxa except for S. paludosus. The research has contributed to the taxonomic revision of the tribe, Senecioneae, in Turkey.
New Karyotypes in Some Species of Asteraceae from Turkey
(UNIV TOKYO CYTOLOGIA, 2015) Martin, Esra; Cetin, Ozlem; Duran, Ahmet; Dogan, Bekir; Tras, Zeynep
In this study, chromosome numbers and morphologies are presented for four species growing naturally in Turkey. These species are Inula peacockiana (Aitch. & Hemsl.) Korovin, Cousinia boissieri Buhse, Scorzonera renzii Rech. f., Lactuca intricata Boiss. Chromosome number of studied species are Inula peacockiana 2n=20, Cousinia boissieri 2n=26, Scorzonera renzii 2n=14 and Lactuca intricata 2n=18. Also, karyotype analyses were made using the Bs200Pro Image Analysis Software. In addition, the karyotype asymmetry of each taxa was evaluated by different methods; TF%, AsK%, Rec and Syi, A(1), A(2), A, AT and Stebbins classification. The correlation between the karyotype asymmetries of the different taxa was calculated.
New species and a synonym of the genus Hesperis (Brassicaceae) from Turkey
(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2016) Duran, Ahmet; Cetin, Ozlem
Hesperis tosyaensis A. Duran, a new species from northern Anatolia, is described and illustrated. It grows under open Quercus forest. The new species is distinct from the closely allied H. ozcelikii A. Duran by the following features: stem erect, 45-90 cm tall, hispid, hairs 2-2.5 mm, and fruit glabrous. Genetic differentiation between closely related Hesperis L. taxa and Matthiola W.T. Aiton was examined by molecular analyses of the ISSR. The chromosome number for Hesperis tosyaensis is 2n = 14. Information is also presented on its ecology and conservation status. In addition, Hesperis aspera E.Fourn. is treated as a synonym of Hesperis bicuspidata (Willd.) Poir.
A new subspecies of Seseli gummiferum (Apiaceae) from Ilgaz Mountain National Park, northern Turkey
(PENSOFT PUBLISHERS, 2015) Cetin, Ozlem; Seker, Meryem Ozturk; Duran, Ahmet
A new subspecies Seseli gummiferum Pall. ex Sm. subsp. ilgazense A. Duran, O. Cetin & M. Ozturk, subsp. nov. (Apiaceae) is described from Kastamonu province, Turkey. It was collected from the open Pinus sylvestris L. and Abies nordmanniana (Steven) E.Spach. mixed forest in the northern Anatolian region. An endemic apparently confined to the Ilgaz Mountain National Park, the new taxon is closely related to Seseli gummiferum subsp. gummiferum. Diagnostic morphological characters for closely similar taxa are discussed, and a key to the subspecies of Seseli gummiferum is presented. ITS (Internal Transcribed Spacer) region of the nuclear ribozomal DNA of closely related Seseli L. taxa and Pimpinella is used to constract phylogenetic tree by using BioEdit and Seaview Programme.
Scorzonera aksekiensis sp nov (Asteraceae) from south Anatolia, Turkey
(WILEY, 2013) Duran, Ahmet; Ozturk, Meryem; Cetin, Ozlem
Scorzonera 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.
Study of phylogenetic relationship of Turkish species of Klasea (Asteraceae) based on ISSR amplification
(PENSOFT PUBL, 2015) Dogan, Bekir; Duran, Ahmet; Seker, Meryem; Cetin, Ozlem; Martin, Esra
Klasea is a taxonomically complex genus in which there are many problems, mostly with Klasea kotschyi and K. hakkiarica. It is challenging to differentiate the genera based on morphological characters alone. Revision studies performed on the basis of molecular data obtained from studies conducted in recent years have made the phylogenetic relationships and systematic positions of the taxa more apparent and reliable. In this study, Klasea, Serratula, Jurinea and Centaurea species native to Turkey, were collected from different localities of Anatolia and DNA was isolated from the collected samples. The data were analyzed ordination analyses including UPGMA and PCA using NTSYSpc 2.1. The infrageneric and intergeneric phylogenetic relationships between Klasea and other related genera were also characterized. The Klasea species were grouped into three clusters. It was determined that taxa Klasea kotschyi and K. hakkiarica are separate but closely related. Moreover, it was observed that the Klasea lasiocephala a separate group within the genera. Clearly the genera Klasea, Serratula, Jurinea and Centaurea are phylogenetically differentiated on the dendogram.

Yazar "Cetin, Ozlem" seçeneğine göre listele

Sayfa Başına Sonuç

Sıralama seçenekleri