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Yazar "Arabaci, Turan" seçeneğine göre listele

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    Achillea goniocephala Extract Loaded into Nanochitosan: In Vitro Cytotoxic and Antioxidant Activity
    (2021) Taskin, Duygu; Dogan, Murat; Ermanoglu, Mizgin; Arabaci, Turan
    Introduction: The present study aimed to prepare Achillea goniocephala chloroform extract and evaluate antioxidant and cytotoxic effects. Then, the nanoparticles (NPs) were synthesized on the most efficient extracts and the biological activities of the free forms of the extracts were compared with the NPs forms. Methods: Antioxidant capacities of 14 extracts (A-N) prepared using column chromatography were determined by FRAP, DPPH and CUPRAC methods. Again, the cytotoxic activities of all fractions were evaluated on MCF-7 and HT-29 cell lines using the XTT cell viability assay. Chitosantripolyphosphate (TPP) NPs of the extracts with the most active biological properties were formed using the ionic gelation method. Results: The particle size of the NPs synthesized from the two most efficient extracts was found to be between 274.12 and 296.25 nm. The extract-encapsulation and loading-efficiency of the most active NPs were found 77.6±0.04% and 7.76±0.01% for the F extract and 10.2±0.02 and 1.39±0.07% for the H extract, respectively. Conclusions: While antioxidant activity results of chitosan NPs were close to unencapsulated extracts, cytotoxic activity results were found to be better than unencapsulated extracts. Based on these results, it is thought that it would be more effective to use the encapsulated forms of A. goniocephala instead of the raw extract of the plant in the treatment.
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    Achillea hamzaoglui (Asteraceae), a new species from Turkey
    (Finnish Zoological Botanical Publishing Board, 2009) Arabaci, Turan; Budak, Uemit
    Achillea hamzaoglui Arabaci & Budak sp. nova (Achillea sect. Santolinoidea), is described from Kirsehir Province, inner Anatolia, Turkey. it is compared with Achillea sintenisii and A. goniocephala. Diagnostic characters, as well as a full description, a key to related species and figures of new species are provided.
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    African Mountain Thistles: Three New Genera in the Carduus-Cirsium Group
    (Mdpi, 2023) Moreyra, Lucia D.; Garcia-Jacas, Nuria; Roquet, Cristina; Ackerfield, Jennifer R.; Arabaci, Turan; Blanco-Gavalda, Carme; Brochmann, Christian
    The floras on the highest mountains in tropical eastern Africa are among the most unique floras in the world. Despite the exceptionally high concentration of endemic species, these floras remain understudied from an evolutionary point of view. In this study, we focus on the Carduus-Cirsium group (subtribe Carduinae) to unravel the evolutionary relationships of the species endemic to the tropical Afromontane and Afroalpine floras, aiming to improve the systematics of the group. We applied the Hyb-Seq approach using the Compositae1061 probe set on 190 samples (159 species), encompassing representatives of all genera of Carduinae. We used two recently developed pipelines that enabled the processing of raw sequence reads, identification of paralogous sequences and segregation into orthologous alignments. After the implementation of a missing data filter, we retained sequences from 986 nuclear loci and 177 plastid regions. Phylogenomic analyses were conducted using both concatenated and summary-coalescence methods. The resulting phylogenies were highly resolved and revealed three distinct evolutionary lineages consisting of the African species traditionally referred to as Carduus and Cirsium. Consequently, we propose the three new genera Afrocarduus, Afrocirsium and Nuriaea; the latter did notably not belong to the Carduus-Cirsium group. We detected some incongruences between the phylogenies based on concatenation vs. coalescence and on nuclear vs. plastid datasets, likely attributable to incomplete lineage sorting and/or hybridization.
  • Küçük Resim Yok
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    Bioassay-guided isolation and antiproliferative efficacy of extract loaded in chitosan nanoparticles and LC-QTOF-MS/MS analysis of Achillea magnifica
    (Elsevier, 2020) Taskin, Turgut; Dogan, Murat; Arabaci, Turan
    This study investigated the antioxidant, anti-urease, anticholinesterase, and antiproliferative activities of different extracts of A. magnifica. The active compounds were isolated from chloroform extract, which has the strongest antiproliferative and antioxidant activities. The structures of the isolated compounds (elenolic acid, luteolin, eupatilin) were examined using spectroscopic techniques (NMR, UV, HR-MS). The antioxidant and antiproliferative effects of isolated compounds showed lower biological activity than those of the chloroform extract. Therefore, chitosan nanoparticles were prepared with this extract and characterized. The cytotoxic activities of the chitosan nanoparticles were examined, and they were found to have a strong antiproliferative activity similar to that of the chloroform extract. The ethanol extract had strong anti-urease and anticholinesterase activity compared with other extracts. Therefore, phenolic compounds that might be responsible for the biological activity were analysed by LC-QTOF-MS/MS. The ferulic acid derivative, apigenin 6 C pentoside 8 C hexoside, apigenin 6,8-di C-hexoside, vitexin, and diosmetin 8-C-glucoside (orientin 4'-methyl ether) compounds from this plant were analysed for the first time. The results showed that the chloroform-loaded chitosan nanoparticles had a strong antiproliferative activity in breast cancer cell lines (MCF-7, MDA-MB-231) and no toxic effect on normal cell lines (L-929), which suggested that this extract might be a potential candidate as a herbal medicine that can be investigated and evaluated in future cancer studies. Additionally, the potential use of ethanol extract as an anti-urease and anticholinesterase agent was revealed. (C) 2020 SAAB. Published by Elsevier B.V. All rights reserved.
  • Küçük Resim Yok
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    Characterization of the Biological Activity and Phenolics in Achillea lycaonica
    (Taylor & Francis Inc, 2018) Taskin, Turgut; Taskin, Duygu; Rayaman, Erkan; Dikpinar, Tugce; Suzgec-Selcuk, Sevda; Arabaci, Turan
    The purpose of this study was to comparatively evaluate for the first time the antioxidant, antimicrobial, and antiurease effects of A. lycaonica extracts obtained using three extraction methods and five solvents followed by identification of the phenolic compounds obtained by Soxhlet extraction with ethyl acetate and maceration with chloroform that showed the highest total phenolic and flavonoid contents with antioxidant and antiurease activity. The phenolic compounds were identified to be chlorogenic acid, caffeic acid, rutin, dicaffeoylquinic acid, salicylic acid, luteolin, quercetin, naringenin, apigenin, and 8-hydroxy- salvigenin. Among the solvent extraction procedures, Soxhlet approach was found to have higher recoveries than other approaches. The results of 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assays showed that the 1: 1 ethanol-water Soxhlet, ethanol ultrasonic bath, and ethyl acetate Soxhlet extraction methods had the highest DPPH antioxidant activities. The ethyl acetate Soxhlet extraction method showed the highest 2, 2'-azino-bis(3-ethylbenzthiazoline- 6-sulfonic acid) diammonium salt (ABTS) and ferric reducing antioxidant power (FRAP) antioxidant activity. In addition, the chloroform maceration extraction method exhibited the highest antiurease activity. Therefore, 1: 1 Soxhlet ethanol-water, ultrasonic bath ethanol, and Soxhlet ethyl acetate extracts may be used in medicine and food production as natural antioxidant sources. In addition, maceration with chloroform may provide a potential antiurease agent.
  • Küçük Resim Yok
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    Chemical Composition and Antimicrobial and Antioxidant Activities of three Turkish Thyme Essential Oils
    (Taylor & Francis Ltd, 2013) Kucukbay, F. Zehra; Kuyumcu, Ebru; Celen, Selma; Azaz, Ayse Dilek; Arabaci, Turan; Yildiz, Bayram
    The aim of present study was to compare the antioxidant and antimicrobial activities of three Thymus kotschyanus varieties on the basis of the chemical compositions of oils obtained by hydrodistillation. GC-MS analysis of the isolated essential oils from aerial parts of Thymus kotschyanus Boiss. & Hohen. var. eriophorus (Ronniger) Jalas, Thymus kotschyanus Boiss. & Hohen. var. kotschyanus and Thymus kotschyanus Boiss. & Hohen. var. glabrascens resulted in the identification of 55,, 34 and 57 constituents, respectively. The major components in the essential oils of T. kotschyanus Boiss. & Hohen. var. eriophorus (Ronniger) Jalas and T. kotschyanus Boiss. & Hohen. var. kotschyanus were described as geraniol (55.0-59.1 %) and geranyl acetate (27.1-28.8 %). The oil of T. kotschyanus Boiss. & Hohen. var. glabrascens is characterized by the high monoterpene fraction (86.5 %) and especially by the presence of carvacrol (57.2 %) and its precursor p-cymene (11.0 %). The essential oils were studied in vitro for antimicrobial activity (as inhibition zone and MIC) against fourteen bacteria strains using agar disc diffusion and broth micro-dilution methods. The oils exhibited moderate zone of inhibitions against bacteria when compared to standard antibiotics ketoconazol and chloramphenicol used as controls. The samples were subjected to a screening for their possible antioxidant activities by using 2,2-diphenyl-1-picrylhydrazyl (DPPH). When compared with the antioxidative potentials of the standard compound used in this study (BHA), essential oils of the T. kotschyanus varieties studied exerted remarkable antioxidant activity.
  • Küçük Resim Yok
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    Chemical Composition of the Essential Oils of Three Thymus Taxa from Turkey with Antimicrobial and Antioxidant Activities
    (Acg Publications, 2014) Kucukbay, F. Zehra; Kuyumcu, Ebru; Celen, Selma; Azaz, Ayse Dilek; Arabaci, Turan
    GC-MS analysis of the essential oils from aerial parts of Thymus migricus Klokov & Des.-Shost, Thymus fallax Fisch. & Mey. and Thymus pubescens Boiss. & Kotschy ex Celak var. pubescens resulted in the identification of 26, 35 and 53 constituents, respectively. The major components in the essential oil of T. migricus were found to be alpha-terpineol (30.6%), thymol (20.7%) and alpha-terpinyl acetate (14.9%) while in the essentiol oil of T. fallax cis-carveol (29.6%) and alpha-terpineol (10.8%). Carvacrol was a dominant compound with a percentage 66.1% of the essential oil of T. pubescens var. pubescens. The data obtained indicate that the essential oils of Thymus species generally exhibit some bacteriostatic activity. The antioxidant activity of the tested essential oils were found to be slightly lower than butylatedhydroxyanisole (BHA).
  • Küçük Resim Yok
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    Chromosome counts and karyotype analysis of some representatives of genus Cirsium Mill. (Asteraceae) in Turkey
    (Firenze Univ Press, 2018) Polat, Nevra; Kiran, Yasar; Sahin, Ahmet; Yildiz, Bayram; Arabaci, Turan
    The chromosome number and karyotype analysis of nine species (10 taxa) of genus Cirsium Mill. distributed in Turkey were analyzed. The somatic chromosome number of Cirsium sipyleum O. Schwarz, C. candelabrum Griseb., C. creticum d'Urv. subsp. creticum, C. elodes M. Bieb., C. subinerme Fisch. & C. A. Mey., C leucopsis DC., C libanoticum DC. subsp. arachnoideum P. H. Davis & Parris and C. arvense (L.) Scop. were determined as 2n=2x=34. Cirsium pubigerum DC. var. caniforme Petr. and var. paphlagonicum Petr. showed 2n=4x=68 chromosome numbers. The chromosomes of the examined taxa predominantly have median region (m) and rarely median point (M) and submedian region (sm) karyotypes. The chromosome number and morphology of Cirsium sipyleum, C. pubigerum var. paphlagonicum, C. leucopsis and C libanoticum subsp. arachnoideum are newly reported in the present study.
  • Küçük Resim Yok
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    Cirsium handaniae (Asteraceae), a new species from Turkey
    (Finnish Zoological Botanical Publishing Board, 2009) Yildiz, Bayram; Dirmenci, Tuncay; Arabaci, Turan
    Cirsium handaniae Yildiz, Dirmenci & Arabaci (Asteraceae) is described as a new species from northeastern Anatolia, Turkey. It belongs to the section Epitrachys and appears to be close to C. macrobotrys and C. lappaceum s. lato. Diagnostic characters, as well as a full description and figures are provided. Its morphological characters are discussed and compared with the related species.
  • Küçük Resim Yok
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    Cirsium sivasicum sp nov and C-peshmenianum sp nov (Asteraceae) and their allies from Turkey
    (Wiley, 2011) Yildiz, Bayram; Arabaci, Turan; Dirmenci, Tuncay; Celenk, Sevcan
    Two new species of Cirsium Mill. from east Anatolia (Turkey): C. sivasicum Yildiz, Arabaci & Dirmenci and C. peshmenianum Yildiz, Dirmenci & Arabaci, are described and illustrated. Both new species belong to C. sect. Epitrachys DC. (Asteraceae: Cardueae) and are closely related to C. rigidum DC., C. leuconeurum Boiss. & Hausskn. and C. karduchorum Petr. The differences between the new species and their allies are discussed and a diagnostic key is provided. A detailed description of a previously poorly known species, C. leuconeurum, is also provided. The pollen grain morphology of the new species and their allies were investigated with light and scanning electron microscopes. Based on the shape of the spines and the surface ornamentation, the pollen grains of the species were divided into 3 types: C. rigidum and C. sivasicum (type I), C. leuconeurum and C. pesmenianum (type II), C. karduchorum (type III).
  • Küçük Resim Yok
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    Cirsium yildizianum (Asteraceae: Cynareae), a new species from East Anatolia, Turkey
    (Finnish Zoological Botanical Publishing Board, 2011) Arabaci, Turan; Dirmenci, Tuncay
    Cirsium yildizianum Arabaci & Dirmenci sp. nova (Asteraceae: Cynareae) is described from East Anatolia, Turkey. It belongs to the section Epitrachys and is morphologically close to C. macrobotrys and C. turkestanicum s. lato. It differs from them mainly in its habit, distinctly pedunculate inflorescence, capitula number and the features of the phyllaries.
  • Küçük Resim Yok
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    Cypsela morphology of Cirsium sect. Cirsium (Asteraceae) taxa in Turkey
    (Springer, 2011) Kostekci, Serkan; Arabaci, Turan
    In this study, the cypsela morphology of 21 (14 species) of the 28 (17 species) Turkish Cirsium Mill. sect. Cirsium (Asteraceae) taxa was examined by stereomicroscope and scanning electron microscope (SEM). The shapes of cypselas are oblong, obovate, narrowly obovate and oblanceolate. The taxa were divided into 7 main types according to the results of SEM investigation on cypsela surface characteristics as: scalariform, ribbed, scrobiculate-ribbed, scrobiculate, scrobiculate-reticulate, reticulate and bireticulate. Taxonomic significance of cypsela morphology is discussed. It is shown that cypsela features can be used as distinguishing characteristics in some Cirsium sect. Cirsium species.
  • Küçük Resim Yok
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    Cypselar morphology of Carduus L. (Asteraceae) taxa in Turkey and its taxonomic implications
    (Soc Botanique France, 2015) Kostekci, Serkan; Arabaci, Turan
    Cypselar morphology of 24 taxa including 16 species and eight subspecies of the 29 Turkish Carduus L. (Asteraceae) taxa (belonging to 17 species) were examined by stereomicroscope and scanning electron microscope. In this study, nine qualitative characters (cypselar shape, symmetry, kurtosis, surface ornamentation and different features of cypselar surface cells) and five quantitative characters (cypselar length and width, umbo length and width, ring diameter) were examined. Macromorphological studies revealed oblanceolate, narrowly obovate, narrowly oblong to oblong cypselar shapes with striate or furrowed surface. Based on scanning electron microscopic investigation of cypselar surface, the studied taxa were divided into five main types: scalariform, scalariform-ribbed, scrobiculate-ribbed, scrobiculate and scrobiculate-foveolate. An identification key of studied species based on cypselar morphology has been provided. The results indicate that cypselar features can be used as diagnostic taxonomic characters in examined Carduus species.
  • Küçük Resim Yok
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    Cytotoxicity, Radical Scavenging, Antioxidant Properties and Chemical Composition of the Essential Oil of Satureja cilicica P.H. Davis from Turkey
    (Marmara Univ, Fac Pharmacy, 2017) Arabaci, Turan; Uzay, Gizem; Kelestemur, Unzile; Karaaslan, Merve Goksin; Balcioglu, Sevgi; Ates, Burhan
    Satureja cilicica P. H. Davis is an endemic species of Lamiaceae, distributed in Turkey. In this study, the essential oil of S. cilicica was obtained by hydrodistillation from the aerial parts. The essential oil was analyzed by GC/MS and the main constituents are identified. Radical scavenging capacities of oil obtained from S. cilicica were determined by using DPPH and ABTS radical scavenging assays. In addition, ferric-reducing power of the essential oil was detected. Cytotoxic activity of the essential oil was determined by MTT assay after 24 h treatment of MCF-7. The major components of the essential oil are p-cymene (17.68%), carvacrol (14.02%), gamma-terpinene (11.23 %) and thymol (8.76%). Radical scavenging capacities of the essential oil were measured as 3.28 +/- 0.02 and 238.15 +/- 3.59 mg Trolox equivalent per milliliter of oil in term of DPPH and ABTS radical scavenging, respectively. Ferric-reducing power of essential oil was found 39.76 +/- 3.66 mg Trolox equivalent per milliliter of essential oil. Growth inhibition effect of essential oil against MCF-7 cancer cell is established. According to the results, essential oil of S. cilicica exhibit low cytotoxic activity, with IC50 values, with IC50 value of 268 mu g/mL. The findings of the analyzed species are compared with the results of previous studies.
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    Homoploid hybrids of Origanum (Lamiaceae) in Turkey: morphological and molecular evidence for a new hybrid
    (Taylor & Francis Ltd, 2021) Arabaci, Turan; Celenk, Sevcan; Ozcan, Taner; Martin, Esra; Yazici, Turker; Acar, Mikail; Uzel, Devrim
    In this study, three hybrids of Origanum (Lamiaceae) were examined in detail using morphological, karyological, palynological and molecular approaches. One of the three hybrids, O. x aytacii, is here described for the first time, and is compared with its putative parents, O. sipyleum and O. vulgare subsp. hirtum. In addition to morphological, karyological and palynological features, we also examined nuclear ribosomal DNA (ITS) sequences of O. x intermedium (O. onites x O. sipyleum), O. x intercedens (O. onites x O. vulgare subsp. hirtum) and their purported parental species that share the same area with the new hybrid. Pollen grains were hexacolpate and isopolar. The range of Polar/Equatorial ratio (P/E) of pollen for investigated taxa varied from 0.74 to 0.99. All investigated taxa are diploid with a chromosome number as 2n = 30. According to molecular results, O. x aytacii was the most polymorphic taxon. In addition, DNA sequences showed that O. x intercedens was more similar to O. vulgare subsp. hirtum than to O. onites, and O. x intermedium was more similar to O. onites than to O. sipyleum. Furthermore, O. onites and O. vulgare subsp. hirtum have many different ITS haplotypes, probably resulting from backcrossing with different individuals. Results obtained in this study demonstrate that hybridization has played a major role in the process of Origanum speciation.
  • Küçük Resim Yok
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    Hybridization among three Cirsium (Asteraceae) species and important evidence for three new hybrids from Turkey
    (Tubitak Scientific & Technological Research Council Turkey, 2019) Dirmenci, Tuncay; Ozcan, Taner; Arabaci, Turan; Celenk, Sevcan; Ismailova, Gulnar; Yildiz, Bayram
    In this study, three new hybrids from the genus Cirsium are described for the first time. Cirsium xnezaketiae Yildiz, Dirmenci & Arabaci, C. xkelkitensis Yildiz, Arabaci & Dirmenci, and C. xerzincanicum Yildiz, Dirmenci & Arabaci are investigated in detail morphologically, palynologically, and molecularly. The hybrid individuals were detected on field trips due to their intermediate morphological characters. Their morphological properties were analyzed to compare with their parents. The pollen grain morphologies of the hybrids and their allies were investigated using light and a scanning electron microscope. The pollen grains were radially symmetrical, isopolar, trizonocolporate, and with echinate or scabrate sculpturing. The tectum is psilate/punctate, microreticulate, or ornate in sculpture. Dimorphic pollen grains were encountered in C. leucocephalum (Willd.) Spreng. subsp. leucocephalum. Two nuclear DNA regions were used to find single nucleotide polymorphisms. nrITS DNA data gave more information than nrETS data about polymorphism. In conclusion, C. xnezaketiae, C. xkelkitensis, and C. xerzincanicum exhibit some significant morphological, palynological, and molecular differences from their parents and present evidence of potential introgression hybridization. Since the hybrids live in a complex with their parents, and some parents have polymorphic loci like their putative hybrids, it can be presented as evidence for potential introgression since backcrossing may be possible among taxa.
  • Küçük Resim Yok
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    An important hybrid zone: evidence for two natural homoploid hybrids among three Origanum species
    (Finnish Zoological Botanical Publishing Board, 2020) Dirmenci, Tuncay; Ozcan, Taner; Yazici, Turker; Arabaci, Turan; Celenk, Sevcan; Martin, Esra
    Based on combined results of different approaches we describe two new natural hybrids, Origanum x bilgilii Dirmenci, T. Yazici & Arabaci and O. x dumanii Dirmenci, Arabaci & T. Yazici from southern Turkey (Antalya). They have a common parent, Origanum saccatum. Morphology and pollen micromorphology of the collected plants were studied, and a comparison of one nuclear (nrITS) and one chloroplast (rpl32) DNA marker was performed. The ploidy level of the two hybrids was established by chromosome counts. Both hybrids have some morphological characters in the leaves. bracts, calyces and corollas that are intermediate between those of their parents. Surface sculpturing and pollen grain size and shape of the hybrids vary and differ to a certain degree from those of the parental species. Heterozygous loci were detected in nrITS sequences of both O. x bilgilii and O. x dumanii, while rpl32 sequences were uninformative. Both hybrids and their parents have the same chromosome number of 2n = 30.
  • Küçük Resim Yok
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    Karyological investigation of six Achillea L. (Asteraceae) species growing in Turkey
    (Firenze Univ Press, 2012) Kiran, Yasar; Turkoglu, Ismail; Kirilmaz, Fatma; Arabaci, Turan; Sahin, Ahmet; Bagci, Eyup
    The chromosome number and morphology in six species of the sections Babounya (DC.) O. Hoffm. and Achillea of the genus Achillea L. (Asteraceae) were investigated using karyological techniques. Sample plants and seeds of A. santolinoides Lag. subsp. wilhelmsii (K. Koch.) Greuter, A. falcata L., A. magnifica Hub. - Mor., A. pannonica Scheele, A. crithmifolia Waldst. & Kit. and A. nobilis L. subsp neilreichii (A. Kern.) Formanek were collected from natural habitats in 2005. The chromosome number found in six species was 2n = 18. All chromosomes had median point (M), median region (m), and submedian (sm) centromers. An increase in asymmetry was not observed in the karyotypes of the species studied. None of the studied species had any B chromosomes.
  • Küçük Resim Yok
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    Karyological notes on another eight species of Achillea (Asteraceae) from Turkey
    (Springer, 2008) Kiran, Yasar; Arabaci, Turan; Sahin, Ahmet; Turkoglu, Ismail
    The chromosome number and morphology in eight species of the sections Ptarmica (Mill.) W. D. J. Koch, Anthemoideae (DC.) Heimerl, Arthrolepis Boiss., Santolinoideae (DC.) Heimerl and Achillea of the genus Achillea L. (Asteraceae) were investigated using karyological techniques. Sample plants and seeds of A. biserrata M. Bieb., A. fraasii var. troiana Aschers. & Heimerl, A. multifida (DC.) Boiss., A. brachyphylla Boiss. & Hausskn., A. pseudaleppica Hub.-Mor., A. cretica L., A. latiloba Ledeb. ex Nordm., and A. kotschyi Boiss. subsp. kotschyi) were collected from natural habitats in 2003 and 2004. The chromosome number found in seven species was 2n = 18, while only A. kotschyi had 2n = 36. All chromosomes had median point (M), median region (m), and submedian (sm) centromers. In addition, only A. biserrata species had one subterminal (st) chromosome. An increase in asymmetry was not observed in the karyotypes of the species studied. None of the studied species had any B chromosomes.
  • Küçük Resim Yok
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    Karyological studies of 10 Cirsium sect. Epitrachys (Asteraceae) species from Turkey
    (Tubitak Scientific & Technological Research Council Turkey, 2013) Yuksel, Eda; Kiran, Yasar; Sahin, Ahmet; Yildiz, Bayram; Arabaci, Turan
    Detailed karyotype properties were established for 10 Cirsium Mill. sect. Epitrachys DC. species distributed in Turkey. The species Cirsium ligulare Boiss., C. sintenisii Freyn, C. boluense P. H. Davis & Parris, C. eriophorum (L.) Scop., C. steirolepis Petr., C. baytopae P. H. Davis & Parris, C. poluninii P. H. Davis & Parris, C. ciliatum (Murray) Moench subsp. szovitsii (K. Koch) Petr., C. ellenbergii Bornm., and C. vulgare (Savi) Ten. have the somatic chromosome number 2n = 2x = 34, whereas C. sintenisii and C. vulgare showed 2n = 4x = 68. The chromosome numbers of C. sintenisii, C. boluense, C. baytopae, C. poluninii, and C. ellenbergii are newly reported here. Karyotype analysis indicated that chromosomes of Cirsium taxa generally have median region (m) and rarely median point (M) and submedian region (sm) karyotypes. The findings for each of the analyzed taxa are compared with the results of previous studies.
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