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I'm Barbaros Yaman. I was born in Bartin, Turkey, in 1967. I graduated from University of Istanbul, Forestry Faculty in 1991. I got my M. Sc. degree in 1998, in Zonguldak Karaelmas University Graduate School of Natural and Applied Science Department of Forest Engineering. I have been attending Ph. D. Programme at the same department in Botany branch. | |||||||||||||||||
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ABSTRACT Both the exterior and interior morphological characteristics and the palinological properties of Centaurea solstitialis subsp. pyracantha (Boiss.) Wagenitz and Centaurea pestalozzae Boiss., which are endemic in T�rkiye, have been determined in this research. In the exterior morphological studies; the characteristics of these endemic species collected from their natural growing environment have been described according to the measurements made on the fresh and dry materials and to the floristical- systematical publications. The parts of the plants like capitula, involucre, flower, achene, leaf and phyllary (the leaf of involucre) have been measured and so their characteristics have been determined. In the interior morphological research; the transverse and tangential sections have been taken from the stems, phyllaries and leaves of these two Centaurea species. In the stem transverse sections; the radial and tangential diameters of the trache have been measured and their number in xylem has been counted. The proportion of the conducting tissue to the stem volume and the proportion of the xylem and phloem to the conducting tissue have been determined. In addition, the lengths and widths of the fibres got from the maseration, their cell wall thickness and lumen diameters have been measured. In the leaves; leaf thickness, lumen dimensions of the lower and upper epidermis cells, the lengths and widths of the stoma cells and their numbers in a mm2 have been determined and also the mesophyll islets related to the veination in a mm2 have been counted. The pollen types of these two species which were studied by us in this research are tricolporatae like the pollens of the other endemic Centaurea species and the pollen shapes of them are subprolata. The pollen shape of Centaurea solstitialis subsp. pyracantha (Boiss.) Wagenitz was determined as P/E= 1.16 (W) and the pollen shape of Centaurea pestalozzae Boiss. was determined as P/E= 1.24 (W). The morphological (interior-exterior) and palinological properties of these two Centaurea species have been shown in Table 3.15 and Table 4.1. Keywords : Centaurea, Endemic, Interior and Exterior Morphology, Pollen Science Code : 502.01.01 *Note: This study is M. Sc. thesis. |
Barbaros YAMAN ZK� Bartin Forestry Faculty | ||||||||||||||||
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Saime BASARAN and Barbaros YAMAN ZK� Bartin Forestry Faculty ABSTRACT In this study; apart from anatomical and palinological features� determination of Rhamnus thymifolius Bornm., which is an endemic species for Turkey, the systematical knowledge of this species have been given according to the literature. On the preparations got from the sections taken from the wood with microtome, the dimensions of the trachea, width and maximum height of rays , the proportion of rays in the wood and their number in a mm2 (and a mm) have been determined. Rays are generally 2-3 (biseriate-multiseriate), sometimes 4 (multiseriate) and rarely 1 (uniseriate) cells wide. Rays are 28 cells high (maximum). The dimensions of the fibres got from maseration have been measured too. On the sections taken from the leaves, the leaf thickness, the dimensions of the epidermis and stoma cells, the stoma types and their number in a mm2 have been determined. In the palinological studies, the polar and equatorial diametres (P and E) and aperture dimensions have been measured and pollen type, shape, sculpture, structure have been determined. The pollen type of R. thymifolius Bornm. is tricolporatae and pollen shape is sphaeroidea (P/E: 0.90 (W)). Key Words: Rhamnus, Anatomy, Pollen * Note: This study was presented in Symposium of "Kasnak Oak" (Quercus vulcanica) and Turkey Flora, in Forestry Faculty of Istanbul University. | |||||||||||||||||
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