Flora of Turkey and the East Aegean Islands.

Flowering Plants. Evolution above the Species Level

A general report on the use of the Allium test as cytotoxicological and genotoxicological assay is proposed, with particular emphasis about the standardization of the test in several common applica...

https://www.tandfonline.com/doi/pdf/10.1080/00087114.2018.1503496

An evaluation for the standardization of the Allium cepa test as cytotoxicity and genotoxicity assay

Index to Chromosome numbers in Asteraceae (キク科の染色体数データベース)

A light and scanning electron microscopic diagnosis of leaf epidermal morphology and its systematic implications in Dryopteridaceae: Investigating 12 Pakistani taxa.

This study concerns the evaluation of leaf anatomical characteristics of the closely related genera Matricaria (4 taxa) and Tripleurospermum (14 endemic taxa, 15 accessions) in Turkey using cluster analysis (CA) and principal component analysis (PCA). All taxa have the same basic leaf structure composed of lower and upper epidermis including anomocytic or anomocytic-anisocytic stomata, parenchymatic mesophyll, and vascular bundle. Statistically significant differences based on ploidy level have been found without generic delimitation. The differences mainly concern stomatal length and the relative size of the vascular bundle. These anatomical characters can be used to distinguish diploid from polyploid taxa of the genera.

Leaf anatomy as an additional taxonomy tool for 18 taxa of Matricaria L. and Tripleurospermum Sch. Bip. (Anthemideae-Asteraceae) in Turkey

Here, we describe the leaf anatomical characters of 26 Cirsium taxa (33 accessions) native to the northeast region of Turkey, with the aim of evaluating their taxonomic significance within the taxa. Leaf anatomies of all taxa were characterized and compared using cluster analysis and multidimensional scaling analysis. The transverse sections of the leaves showed various numbers of vascular bundles and accessory bundles. In addition, significant differentiations were observed in the midrib and lamina thickness, the height and width of vascular bundle, and number of stomata, and epidermal cell wall patterns in the abaxial and adaxial surfaces among the taxa. These results demonstrate that the compared anatomical characters among taxa are partly in accordance with their sectional delimitation in the Flora of Turkey. However, our data suggest that some taxonomic re-arrangements might be necessary. Based on its anatomy, we propose that the Cirsium taxa can be treated as pioneers. Some ecological interpretations are also made.

Leaf anatomical notes on Cirsium Miller (Asteraceae, Carduoideae) from Turkey

In this study, we report the chromosome counts of 22 plant species in seven families from north-east Anatolia, Turkey. The chromosome numbers of Centaurea hypoleuca DC (2n = 28), C. pecho Albow (2n = 56), C. pseudoreflexa Hayek (2n = 18) and Echinops sintenisii Fregn. (2n = 30) are reported here for the first time. New ploidy levels are recovered for Vinca major L. subsp. hirsuta (Boiss.) Stearn (9x), Centaurea simplicicaulis Boiss & Huet. (2x), C. solstitialis L. subsp. solstitialis (4x) and C. triumfetti All. (6x). The chromosome numbers of 13 species are here reported for the first time from Turkey. These newly available data are further compared with those previously published for the same or related species and the systematic implications are discussed.

https://www.tandfonline.com/doi/pdf/10.1080/00087114.2007.10797958

Chromosome numbers of the twenty-two Turkish plant species

In the study, some Lathyrus L. taxa naturally growing in the northeastern Anatolia were investigated cytotaxonomically. Chromosome numbers and karyotypes of eight taxa were investigated by using karyological and numeric taxonomical techniques. The chromosome numbers of all these diploid taxa found as 2n= 14. The results were considered in conjunction with the karyological literature data.

https://www.tandfonline.com/doi/pdf/10.1080/12538078.2006.10515555

Melahat Ozcan

Papers

Leaf anatomy as an additional taxonomy tool for 18 taxa of Matricaria L. and Tripleurospermum Sch. Bip. (Anthemideae-Asteraceae) in Turkey

Leaf anatomical notes on Cirsium Miller (Asteraceae, Carduoideae) from Turkey

Chromosome numbers of the twenty-two Turkish plant species

Karyotype analysis of some Lathyrus L. taxa (Fabaceae) from north-eastern Anatolia

Micromorpho-anatomical fruit characteristics and pappus features of representative Cardueae (Asteraceae) taxa: Their systematic significance