Canan Özdemir

Structural investigation of the glandular trichomes of Salvia argentea

The morphology, anatomy and distribution of glandular trichomes on the aerial organs of Salvia argentea L. has been investigated. Two morphologically distinct types of glandular trichomes were determined. Capitate glandular trichomes forming a base 1–7 celled, a stalk 1–5 celled or no stalk and a head uni- or bicellular had various types. In capitate trichomes, the neck cell that has an important role especially for xeroformic plants, acting to prevent the backflow of secreted substance through the apoplast has been distinctively observed in the investigated species. The capitate trichomes were present abundantly on all aerial organs of S. argentea. Peltate glandular trichomes had a large secretory head forming 1–5, 8 central and 8–10, 12, 14 peripheral cells. Peltate trichomes are present on all aerial organs, except petiole, being the most abundant on calyx and corolla. Results were shown by tables and photographs.

Cytological study the genus Chesneya Lindl. (Fabaceae) in Turkey

Abstract In the present research, karyotype and meiotic analysis of Chesneya Lindl. species of Turkey were performed. The chromosome numbers and karyotype analysis of the spe cies were here reported for the first time from Turkey. The chromosomes number determined are Chesneya rytidosperma Jaub. & Spach and Chesneya elegans Fomin 2n = 2x = 16.

Morphological, anatomical and cytological investigation on endemic Lamium moschatum var. rhodium

In this study, the morphological and anatomical features of endemic Lamium moschatum Miller var. rhodium (Gand.) R. Mill (Lamiaceae) are described in detail. Lamium moschatum var. rhodium has an annual taproot. The stem is erect and clearly quadrangular. The leaves are broadly ovate to cordate-ovate or nearly suborbicular in shape. Inflorescense is verticillate cyme. The corolla is white and the tube is curved and bears an annulus inside, near the base. Cross-sections of the root, stem, petiole, leaf, calyx, corolla and generative organs were examined and the anatomical features of the taxon are discussed. Furthermore, glandular hairs distributed on the plant taxon are shown. In karyological research, chromosome numbers were determined as 2n = 18. The results are presented with photographs and tables.

Morphological and Anatomical Studies on Economically Important Empetrum nigrum L. Subsp. hermaphroditum (Hagerup) Bocher (Empetraceae)

The study is based on anatomical and morphological investigations of Empetrum nigrum L. subsp. Hermaphroditum (Hagerup) Bocher, an important plant because of its value for medicine and food. Plant samples were collected from the northeastern part of Turkey. Morphological and anatomical features of various plant parts (e.g., stem, leaf, flower, and fruit) are illustrated and described in detail.

Cytogenetic effects of 99technetium on meristematic cells of root tips of Vicia faba L. andstatistical comparison

In this study, cytogenetic effects of 99technetium (99Tc) on meristematic cells of root tips belonging to Vicia faba L. have been investigated. Seeds of the plant were prepared and kept in 99Tc standard for different time periods: 1/12, 1/4, 1/2, 1, 2, 3, 4, 5, 6 and 12 h. Seeds treated with 99Tc 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.

Araceae Familyasına Ait Arum nickelii Schott ve Monotipik Arisarum vulgare O.Targ.-Tozz Türleri Üzerinde Morfolojik ve Anatomik bir Araştırma

Bu calismada Araceae familyasindan olan Arum nickelii Schott (Yilan yastigi) ve Arisarum vulgare O.Targ.-Tozz (Yilancikotu) turlerinin anatomi ve morfolojileri arastirilmistir. Incelenen turler spatanin birlesik olup olmamasi bakimindan birbirinden ayrilir. Anatomik calismalarda parafin metodu kullanilarak hazirlanan kok, skap ve yapraklar safranin-fast green ikili boyama serisinde boyanmistir. Anatomik olarak tipik monokotil ozellikleri gosteren bitkilerin diger Araceae turlerinden ayirt edici bazi ozelliklere sahip oldugu belirlenmistir. Bu farkliliklar orijinal cizim ve fotograflarla gosterilmistir.

The anatomical studies on two Biarum (Araceae) species in Turkey

In this study, anatomical properties of Biarum marmarisense (P. C. Boyce) P. C. Boyce and Biarum pyrami (Schott) Engl. var. pyrami were examined. The specimens were collected from Antalya province, South West of Anatolia. Degree of spathe tube margin connection, distribution of pistillodes and staminate-pistillate flower zone interstice length characters are important in Biarum Schott. taxonomy at specific level. The cross-sections of root, stem and leaf parts of the plant were examined and demonstrated by photographs. Although thicknesses of the cell wall of the endodermis and xylem strands are distinguishing features, raphide crystals are same feature in both species. B. marmarisense has observed paracytic stoma types while B. pyrami var. pyrami has anomocytic stoma types. Most of the anatomical properties were similar to the other members of the Araceae family.

A karyological study on taxa of Coronopus D.C. section of Plantago L. genus (Plantaginaceae) in Turkey

In this study the chromosome number and morphology of five taxa of the Coronopus D.C. section – Plantago coronopus subsp. coronopus L., P. coronopus subsp. commutata (GUSS.) PİLGER, P. crassifolia FORSSKAL, P. maritima L., and P. holosteum SCOP. (Plantaginaceae) – in Turkey were investigated using karyological techniques. The seeds of taxa were collected from natural habitats. The chromosome numbers are determined for four taxa (P. coronopus subsp. coronopus, P. coronopus subsp. commutata, P. crassifolia and P. maritima) as 2n = 4x =20 and one taxon (P. holosteum) as 2n = 2x = 12. The chromosome numbers and karyotype analysis of the species are reported for the first time for Turkey.

Cytological study on Hippocrepis ciliata L. and Hippocrepis unisiliquosa ssp. unisiliquosa L. (Leguminosae) in Turkey

Somatic chromosome numbers and karyotype of Hippocrepis unisiliquosa ssp. unisiliquosa L. and Hippocrepis ciliata L. (Leguminosae) collected from Turkey were examined. Chromosome numbers were determined as 2n = 2x = 14 in Hippocrepis unisiliquosa ssp. unisiliquosa L. and Hippocrepis ciliata. The mitotic chromosome number and karyotype of the taxa were reported here for the first time.

Comparative pollen morphology of Turkish species of Petrorhagia (Caryophyllaceae) and its systematic implications

Pollen morphology of 10 taxa from Turkey, four of them endemic, belonging to the genus Petrorhagia (Caryophyllaceae), P. alpina subsp. alpina, P. alpina subsp. olympica, P. cretica, P. dubia, P. hispidula, P. lycica, P. pamphylica, P. peroninii, P. prolifera and P. saxifraga, has been investigated using light (LM) and scanning electron (SEM) microscopy. Pollen morphology differences among these taxa have been determined. The pollen type of investigated taxa is polyporate (12–22-porate), sphaeroidal, the exine exhibits a tectate structure and a microechinate ornamentation. Petrorhagia alpina subsp. alpina has the smallest pollen grain diameter (18.57 μm) and P. dubia the largest one (37.80 μm). The number of pores ranges from 12 (in P. dubia and P. saxifraga) to 22 (in P. alpina subsp. alpina and P. alpina subsp. olympica and P. hispidula) with a minimum pore diameter of 2.37 μm in P. alpina subsp. alpina and a maximum pore diameter of 4.23 μm in P. peroninii. The exine thickness ranges from 1.73 μm in P. saxifraga to 3.78 μm in P. pamphylica. In this study, the systematic implications are discussed in the light of palynological results.