Browsing by Author "Yildiz K."

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    Seed morphological studies of silene L., from Turkey
    (1998) Yildiz K.; Cirpici A.
    The genus Silene L., (Caryophyllaceae) from Turkey have been studied for their seed morphology. A total of 19 species of which 3 are endemic belonging to 12 sections were studied. The seeds show variation in their morphology. The seed morphology as studied show section specific observations.
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    Pollen morphology of Silene L. (Caryophyllaceae) from Turkey
    (2001) Yildiz K.
    Morphology of pollen grains of 13 species (3 of which are endemics in Turkey) belonging to nine sections of the genus Silene L., (Caryophyllaceae), collected from Northwest Anatolia in Turkey, was investigated using light, scanning electron (SEM) and projectina screen scale microscopy. The pollen grains were pantoporate, spheroidal and semitectate with perforations, spinulose exine. S. rhynchocarpa Boiss., with highest number and S. otites (L.) Wibel with lowest number of pores have the right taxonomical positions. The taxonomical position of S. compacta Fischer and S. dichotoma Ehrh. subsp. sibthorpiana (Reichb) Reich., which have flowers forming heads and are monochasial is disputed because they have lower pore number in relation to the other taxa, although they have other phylogenetically advanced characteristics.
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    Pollen morphology of Caryophyllaceae species from Turkey
    (2001) Yildiz K.
    The pollen morphology of 45 species, 11 of which are endemic, belonging to 15 genera of Caryophyllaceae was investigated by light (LM) and scanning electron microscopy (SEM). On the basis of exine structure, ornamentation and morphological data, 10 distinct pollen types viz., 1. Arenaria type, 2. Stellaria holostea L., 3. Cerastium type, 4. Dianthus type, 5. Gypsophila repens type, 6. Lychnis viscaria type, 7. Silene vulgaris type, 8. Silene caryophylloides subsp. subulata (Poiret) Otth, 9. Silene conica type and 10. Agrostemma githago L., were recognized. Pollen grains are tectate, spheroidal, polypantoporate, microechinate (spinulose), perforate, microperforate (punctate tubuliferous), reticulate and semireticulate. Significant differences in grain size and pore number are also found in all the species. The biggest grains are in Silene L., and Agrostemma L., species, whereas the smallest grains are in Petrorhagia (Ser.) Link. The most advanced species of Caryophyllaceae regarding evolution are found in Silene and Agrostemma.
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    Seed morphology of Caryophyllaceae species from Turkey (North Anatolia)
    (2002) Yildiz K.
    Scanning electron microscopy (SEM) techniques were used to investigate the macro and micromorphology of seed of 17 species (12 genera) of Caryophyllaceae. All material studied was collected from North Anatolia (Square A3-A8 of Flora of Turkey). Three of the species are endemic for Turkey. Some important character states identified were: Seed type: Reniform, ovoid, reniform to orbicular, orbicular, peltate, scaled-winged, winged, cylinderical, ovoid to reniform; seed surface type: Flat-concave, flat, convex, wringed crugosus aculeate, concavo-convex, rounded; tubercle shape: Tall/short conical, obtuse, rounded, flat and aculeate-verrucate, digitate; surface granulation: Medium, fine and coarse or not; suture outline: Digitate/serrate/stellate/sharply-sinuous, fine digitate and sharply serrate; hylar zone: Recessed, prominent, facial and flat.
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    A morphological investigation on Silene L., (Caryophyllaceae) species distributed in West Anatolia and North Cyprus
    (2006) Yildiz K.
    In this study, the morphology of Silene sipylea (L.) O. Schwarz, S.fabaria (L.) Sibth. & Sm., 5. tenuiflora Guss., S. lydia Boiss. distributed in West Anatolia (B1, C1, C2) and S. discolor Sibth. & Sm., S. colorata Poir. var. colorata, S. apetala Willd. var. grandiflora distributed in North Cyprus was investigated. Making use of fresh specimens collected from both geographical regions, drawings of the general view and parts of the plant such as the flower, parts of the flower (sepal, petal), fruit were made, and micrographs of the seeds taken by stereo light microscopy. Significant morphological and seed characters related to the species are presented. Longest calyx was encountered in S. sipylea and the shortest in S. apetala var. grandiflora while S. lydia, S. discolor, S. colorata var. colorata and S. apetala var. grandiflora had puberulent calyx, S. sipylea, S. fabaria and S. tenuiflora had a glabrous calyx. S. fabaria, S. tenuiflora and S. apetala var. grandiflora were found to have 10 anastomotic veins in the calyx, whereas S. discolor, S. colorata var. colorata and S. sipylea had 10, and S. lydia 25-30 in the calyx. Ligula were observed in the basal petal blades of all the species. Ligula of S. sipylea and S. lydia are quite small. The anthophore in S. lydia is approximately 1 mm and as long as 25-30 mm in S. sipylea The seeds of S. colorata var. colorata and S. apetala var. grandiflora are distinct from those of the other species, they are reniform shaped, round, winged and wrinkled. The largest seeds were observed in S. tenuiflora and the smallest in S. discolor. The tubercles are quite distinct in S. lydia and S. tenuiflora has an elongated conical shape.
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    Morphological and palynological investigation on Silene gigantea L. var. gigantea and Silene behen L. (Caryophyllaceae) distributed in Western Anatolia and Northern Cyprus
    (2006) Yildiz K.
    A comparative investigation was carried out on the morphology and palynology of Silene gigantea L. var. gigantea and Silene behen L. species of the family Caryophyllaceae distributed in Western Anatolia and Northern Cyprus. An examination conducted on S. gigantea var. gigantea revealed that the calyx length in Western Anatolian specimens was shorter than that of those from Northern Cyprus, that the basal petal blades of the Western Anatolian specimens did not have any ligula while those from Northern Cyprus did, and that the petal blades belonging to the specimens from Northern Cyprus demonstrated less clefting as compared to those from Western Anatolia. Therefore, S. gigantea, growing in Western Anatolia and Northern Cyprus, could be separated into 2 subspecies. In addition, S. behen also could be separated into 2 subspecies. It was also observed that the seeds taken from all specimens of both species were reniform, with the tubercles on the seed surfaces of the S. behen species having a longer conical structure as compared to those of S. gigantea var. gigantea. Pollen grains of both species are spheroidal, tectate and spinulosemicroperforate. It was also determined that S. gigantea var. gigantea specimens collected from Northern Cyprus had greater pore diameters, whereas S. behen specimens from Western Anatolia had greater distances between the pores. © TÜBİTAK.
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    Chromosome numbers of 16 endemic plant taxa from Northern Cyprus
    (2006) Yildiz K.; Gücel S.
    The chromosome numbers of 16 of the 19 endemic taxa of Northern Cyprus were investigated, 15 of which are new records. Diploid chromosome numbers of the taxa investigated varied between 2n = 12 and 2n = 30. One species, Scutellaria sibthorpii (Benth.) Hal., was both diploid (2n = 14) and tetraploid (2n = 28), and Sideritis cypria Post, 2n = 30, was either diploid or triploid. © TÜBİTAK.
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    A karyotypic study on Silene, section Siphonomorpha species of Turkey
    (2008) Yildiz K.; Minareci E.; Çirpici A.; Dadandi M.Y.
    Karyology of the eight taxa of Silene sect. Siphonomorpha known from Turkey was investigated. Diploid chromosome numbers and the basic chromosome number of the studied taxa were obtained as 2n =24 and x = 12, respectively. A karyotype analysis of the studied taxa was carried out and the chromosome numbers of S. splendens, S. amana and S. phrygia were determined for the first time. The smallest chromosomes were observed in S. fruticosa and the largest in S. italica subsp. italica. Silene splendens showed the highest A 1 index, whereas S. amana had the highest interchromosomal asymmetry coefficient(A 2). The karyologic results of the study and the analysis of chromosomal morphology of each taxon is presented.
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    Morphological investigations and transplantation attempts on some endemic species of northern cyprus
    (2008) Gücel S.; Yildiz K.
    The aim of this study was to investigate the morphology of 10 endemic taxa Pimpinella cypria, Ferulago cypria, Limonium albidum subsp. cyprium, Onosma caespitosum, Origanum syriacum var. bevanii, Salvia veneris, Sideritis cypria, Phlomis cypria var. cypria, Scutellaria sibthorpii and Teucrium cyprium subsp. kyreniae distributed in Northern Cyprus. These belong to the families Apiaceae, Plumbaginaceae, Boraginaceae, and Lamiaceae. All these species are distributed only on the Beshparmak mountains in the northern part of Cyprus and are under a threat of extinction due to severe habitat degradation arising from human activities, forests fires and stone queries. The micrographs of the seeds were taken by means of trinocular stereo dissection microscope, and detailed morphological features recorded from the fresh and dried samples collected during 2001-2004. An attempt has been made for transplantation of these species to some protected sites.
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    Silene cirpicii (Caryophyllaceae), a new species from Turkey
    (Finnish Zoological and Botanical Publishing Board, 2009) Yildiz K.; Dadandi M.Y.
    Silene cirpicii K. Yildiz & Dadandi sp. nova (Caryophyllaceae) is described and illustrated from N Anatolia, Turkey. Diagnostic morphological characters for distinction from the similar S.falcata, S. caryophylloides and S. argaea are given along with their chorological characteristics. Ultrastructure of the seeds and pollen grains was examined using SEM.
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    A palynological investigation of endemic taxa from Northern Cyprus
    (2009) Yildiz K.; Gücel S.; Dadandi M.Y.
    Palynology of 19 endemic plant taxa belonging to 9 families distributed in North Cyprus was investigated by both light (LM) and scanning electron microscopy (SEM). The pollen grains were measured and their aperture characteristics and surface ornamentation determined. The systematic positions of the taxa as well as the genera they belonged to were investigated according to the data obtained. The largest pollen grains were found in Salvia veneris Hedge and the smallest ones in Onosma caespitosum Kotschy. The pollen type was generally termed trizonocolpate, pollen shapes spheroidal, prolate, subspheroidal, perprolate, supraprolate, pollen structure tectate and semitectate, and ornamentation scabrate, striate, microechinate, microperforate, reticulate, microreticulate, bireticulate, psilate and rugulate.
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    Karyological studies in some species of the genus silene (Caryophyllaceae)
    (2009) Minareci E.; Yildiz K.; Çirpici A.
    Summary Karyology of the 6 Silene species from Turkey was investigated. Diploid chromosome numbers and the basic chromosome number of the studied taxa were obtained as 2n=24 and x= 12 respectively. The karyotype analysis of S. viscosa, S. eremítica, S. skorpilii and S. confertiflora were carried out for the first time. Also the chromosome numbers of S. eremítica and S. confertiflora were determined for the first time. The largest chromosomes were observed in S. otites and the smallest ones were observed in S. viscosa. S. otites shows the highest A1 index. S. sforpilii represents the highest interchromosomal asymmetry coefficient (A2). The karyologic results of the study and the analysis of chromosomal morphology of each taxon were shown as tables. ©2009 The Japan Mendel Society.
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    A karyotypic study on Silene sect. Sclerocalycinae in Turkey
    (2009) Yildiz K.; Minareci E.; Çirpici A.
    The karyology of fifteen taxa of Silene sect. Sclerocalycinae from Turkey has been investigated. Karyotype analyses has been carried out and the chromosome number of Silene caramanica, S. peduncularis, S. armena, S. laxa, S. swertiifolia, S. caesarea, S. sclerophylla, S. haradjianii and S. lycaonica have been determined for the first time. For all the taxa studied, the diploid chromosome number and the basic chromosome number were found to be 2n = 24 and × = 12, respectively. Except for S. chlorifolia and S. doganii, the karyomorphology of the taxa studied is here described for the first time. S. laxa was found to have the smallest chromosomes whereas the largest ones were observed in S. haradjianii. Silene chlorifolia had the highest A1 index and S. bupleuroides subsp. bupleuroides had the highest interchromosomal asymmetry coefficient (A2). © The Authors. Journal compilation.
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    Comparative morphological and palynological study on poorly known Asperula serotina and its closest relative A. purpurea subsp. apiculata
    (2010) Minareci E.; Yildiz K.; Cirpici A.
    Morphological and palynological features were examined in the closely related Turkish endemic taxa Asperula serotina and A. purpurea subsp. apiculata. Their morphological features showed very minor difference such as internodes length and the vein thickness of leaf, however, the seed and pollen characteristics clearly appear to have taxonomic value. The clavate-reticulate seed surface suture of A. serotina clearly differs from that lineate-sulcate of A. purpurea subsp. apiculata. Similarly, the pollen perforations and number of spines differ in each taxon. Moreover, the two taxa are geographically isolated from each other. Ecological features are also briefly discussed. The seed and pollen micromorphological properties could be used for intra/interspecific classification of Asperula which is taxonomically critical. © 2010 Academic Journals.
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    Silene demirizii sp. nov. and S.marschallii subsp. anamasi subsp. nov. (Caryophyllaceae) from Turkey
    (2010) Yildiz K.; Çirpici A.; Dadandi M.Y.
    Two new taxa of Silene L. (Caryophyllaceae) from Turkey, Silene demirizii K. Yi{dotless}ldi{dotless}z & Çi{dotless}rpi{dotless}ci{dotless} sp. nov. and Silene marschallii C. A. Meyer subsp. anamasi K. Yi{dotless}ldi{dotless}z & Dadandi{dotless} subsp. nov. are described and illustrated. Their taxonomic positions are discussed and they are compared with allied taxa. The distributions of the new and closely related species are mapped. Pollen grain and seed coat ultrastructure of the new and allied taxa were examined by SEM. © 2010 The Authors.
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    Taxonomy of campanula tomentosa lam. and c. vardariana Bocquet from Turkey; [Türkiye'de yayiliş gösteren Campanula tomentosa Lam. and C. vardariana Bocquet'nin taksonomisi]
    (2010) Alçitepe E.; Yildiz K.
    The taxonomical status of Campanula tomentosa Lam. and C. vardariana Bocquet, belonging to the section Quinqueloculares (Boiss.) Phitos, which have important taxonomical problems, was reviewed in this study. Furthermore, morphological, anatomical leaf surface, and palynological features of these 2 species were examined in detail. Habit, shape of leaves, calyx, corolla, stamen, pistil, and seed micromorphological features as morphological characters; and pollen diameter, pore diameter, spinule length, and number, ornamentation, etc. as palynological characters, were examined and discussed. An identification key for the species is presented according to the results obtained. Following this extensive study, the mentioned problems of C. tomentosa and C. vardariana in the flora of Turkey were solved, and it was verified that they were 2 different species. © TÜBİTAK.
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    Asperula pseudochlorantha var. antalyensis comb, et stat. nov. (Rubiaceae)
    (Finnish Zoological and Botanical Publishing Board, 2010) Minareci E.; Yildiz K.
    Asperula pseudochlorantha Ehrend, and Asperula antalyensis Ehrend, from Turkey were described in 1958. General characteristics, seed structure and micromorphology, pollen measurements and other pollen characteristics were examined to determine the taxonomie status of these taxa. Morphologically, the two taxa cannot be easily distinguished, and the seeds and pollen grains are similar. The chromosome number is 2n = 22 for both taxa. Based on morphological, palynological and cytological similarities, and the fact that both taxa are found in the same habitats, we propose that A. antalyensis should be recognized as A. pseudochlorantha Ehrend, var. antalyensis (Ehrend.) Minareci & K. Yildiz, comb, et stat. nov. © 2010 Finnish Zoological and Botanical Publishing Board.
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    Silene aydosensis (Caryophyllaceae), a new species from Anatolia, Turkey
    (Finnish Zoological and Botanical Publishing Board, 2010) Yildiz K.; Erik S.
    Silene aydosensis K. Yildiz & S. Erik sp. nova (Caryophyllaceae, S. sect. Sclerocalycinae is described and illustrated from S and SW Anatolia, Turkey. Diagnostic morphological characters for distinction from the similar S. caramanica and S. doganii are given. Distribution of the new and the morphologically similar species are mapped. Ultrastructure of seed and pollen grains of S. aydosensis was examined by SEM. © 2010 Finnish Zoological and Botanical Publishing Board.
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    Karyotype characterization of Turkish taxa of the genus Asperula L. - Section Thlipthisa (Rubiaceae)
    (2011) Minareci E.; Yildiz K.
    Karyotype studies were performed in five taxas of Asperula viz., Asperula brevifolia, A. pseudochlorantha var. pseudochlorantha, A. pseudochlorantha var. antalyensis, A. serotina and A. purpurea subsp. apiculata from the section Thlipthisa, and their diploid (2n), and the basic (x) chromosome numbers were determined as 2n=22 and x=11, respectively. Chromosome length varied from 0.80 μm (A. serotina) to 2.40μm (A. brevifolia). Chromosomes are principally metacentric except for A serotina, which has submetacentric chromosomes. A. serotina showed the highest intrachromosomal assymetry coefficient (A 1) index and A. pseudochlorantha var. antalyensis represented the highest interchromosomal asymmetry coefficient (A 2). The chromosome numbers of A. brevifolia, A. serotina and A. purpurea subsp. apiculata were reported for the first time.
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    Pollen morphology of sections Siphonomorpha and Lasiostemones of the genus Silene from Turkey; [Türkiye'de yayılış gösteren Silene cinsi Siphonomorpha ve Lasiostemones seksiyonlarının polen morfolojisi]
    (Turkiye Klinikleri, 2011) Yildiz K.; Dadandi M.Y.; Minareci E.; Çirpici A.
    The pollen morphology of 16 taxa belonging to the sections Siphonomorpha Otth and Lasiostemones Boiss. from the genus Silene L. (Caryophyllaceae) was examined via scanning electron microscopy (SEM). Pollen types among all of the examined taxa were spheroidal, ornamentations were generally microechinate-microperforate (punctate), but perforate in Silene viridiflora L., structures were mostly tectate but were observed to be semitectate only in S. viridiflora, the highest pore numbers were found in S. fruticosa L. and S. viridiflora, the lowest pore numbers were those of S. gigantea L. subsp. rhodopea (Janka) Greuter and S. marschallii C.A.Mey., and interpore distance was greatest in S. gigantea subsp. rhodopea and smallest in S. amana Boiss. The widest perforation was observed in S. Viridiflora, whereas the lowest value was observed in S. olympica Boiss. As a result of these detailed examinations, some Silene species with significant taxonomic problems were reviewed in terms of palynology, and suggestions are provided about their positions. S. viridiflora was determined to be the taxon with the most different pollen morphology according to general characters. According to pore number and perforation, the most advanced taxon was S. Viridiflora, while the most primitive taxa were found to be S. olympica, S. gigantea subsp. rhodopea, and S. olympica. © TÜBİTAK.