Browsing by Author "Kocabas, O"

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    ANATOMICAL INVESTIGATION OF FOUR TAXA OF SCUTELLARIA ALBIDA L. (LAMIACEAE)
    Minareci, E; Pekönür, S; Özdemir, C; Çiçek, M; Kocabas, O
    The root, trunk and leaf anatomy of four taxa of Scutellaria albida namely, S. albida subsp. albida, S. albida subsp. velenovskyi, S. albida subsp. colchica and S. albida subsp. condensata were examined. The aim is to determine whether these characters can be used for systematic purposes. The roots displays a typical stele structure in all studied taxa. But their number of pith rays are different in each taxa. The stems of S. albida taxa have square like transection, collateral vascular bundles, parenchymatous pith and show 1-2 layered epidermis coated with thick cuticle. S. albida subsp. condensata has papillate epicuticular wax on its stem cuticle layer. In all taxa angular collenchyma, and cambium forming phloem outward and xylem inward are observed. The leaves are hypostomatic, have single rowed epidermis coated with thick cuticle and show dorsiventral mesophyll in all studied taxa. S. albida subsp. velenovskyi has echinate epicuticular wax on its leaf cuticle layer, but the others have smooth cuticle layer. The midrib shows one collateral bundles in all taxa but the shape of median veins of the leaf blade show variation in each taxa. Some of the anatomical characters viz. the number of pith rays of roots, the number of palisade parenchyma layer, plant cuticles covered by wax, the shape of median veins of the leaf blade and stomata index, provide information of taxonomical significance for these taxa.
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    THE MORPHOLOGICAL AND ANATOMICAL INVESTIGATION OF TWO ENDEMIC CROCUS L. (IRIDACEAE) SPECIES OF TURKEY
    Akyol, Y; Durmuskahya, C; Kocabas, O; Pekönür, S; Özdemir, C
    The paper reports morphological and anatomical features of Crocus asumaniae Mathew and Crocus mathewii Kerndorff et Pasche, endangered plants. Transvers sections of plant parts stem, scape and leaf were investigated. Characteristically, style is dividing into 3 slender yellow to orange branches, flowering takes place in autumn and is hysteranthous. In anatomical studies, the walls of root endodermal cells of both species show thickenings completely and hairs are found on the abaxial epidermis of leaf. Presence of sclerenchymatic tissues around the vascular bundles of the leaf is a characteristic feature.
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    Morphological and Anatomical Studies on Arum nickelii Schott and Arisarum vulgare O.Targ.-Tozz Species
    Akyol, Y; Yetisen, K; Kocabas, O; Özdemir, C
    In this study, aimed to investigate the morphology and anatomy of Arum nickelii Schott (Yilan yastigi) and Arisarum vulgare O.Targ.-Tozz (Yilancikotu) belong to Araceae family. The plants are separated from each other according to whether spathe is united or divided. Anatomical sections were prepared using paraffin method and painted by double staining series safranin-fast green. It is observed that, plants containing typically feature, of monocotyl have distinguish features from other types of Araceae. These differences are illustrated with original drawings and photographs.
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    A New Staining Method for Hand-Cut in Plant Anatomy Studies
    Bozdag, B; Kocabas, O; Akyol, Y; Özdemir, C
    In this study, a new double staining method that provide clearly to identify tissues in making preparations by hand-cut of Plant samples were fixed with alcohol has been developed. This new method can be provides practicality and certainty in terms of distinguishing the tissues and can be used for hand-cut. In this' method, double staining consist of safranin and fast green can be used in both monocotyledons and dicotyledons and can be stored at room temperature for a long time without spoiling. Photographs of the anatomical sections is used this method was taken and tissues was demonstrated.
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    NUMERICAL COMPARATIVE HAIRS OF SOME LAMIACEAE TAXA COLLECTED FROM TURKEY
    Özdemir, A; Kocabas, O
    In this study, glandular and aglandular hairs were examined and compared numerically in the vegatative and reproductive organs of Salvia viridis, Salvia verticillata subsp. amasiaca, Salvia virgata, Phlomis pungens var. pungen, Phlomis pungens var. hispida, Stachys cretica subsp. anatolica, Stachys cretica subsp. smyrnaea, Teucrium scordium subsp. scordioides. It has been observed that all taxa which are collected Western and Northern Anatolia have glandular hairs and aglandular hairs of various shapes, size and modes of secretion. The hairs variations in eight Lamiaceae taxa were been investigated by means of numerical methods (Analysis of variance and Pearson correlation). It was also found that the results from numerical analysis of the hairs characters can provide additional evidences for the recognition of the taxa.
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    Cytogenetic effects of 99technetium on meristematic cells of root tips of Vicia faba L. andstatistical comparison
    Özdemir, A; Bozdag, B; Sepet, H; Parlak, Y; Kocabas, O; Erees, FS; Özdemir, C
    In this study, cytogenetic effects of (99)technetium (Tc-99) on meristematic cells of root tips belonging to Vicia faba L. have been investigated. Seeds of the plant were prepared and kept in Tc-99 standard for different time periods: 1/12, 1/4, 1/2, 1, 2, 3, 4, 5, 6 and 12 h. Seeds treated with Tc-99 were sprouted and the root tips obtained were prepared for microscopic examination. Some abnormalities e.g. chromosome breaking, chromosome dispersion, bridge chromosomes, chromosome adherence and ring chromosomes were observed. Abnormalities seen for each treatment depended on the time period. The variety and number of abnormalities usually increased with increased treatment time. The results obtained were evaluated statistically.