MICROMORPHOLOGICAL AND ANATOMICAL CHARACTERS OF THE TURKISH ENDEMIC Marrubium trachyticum Boiss. (LAMIACEAE)

Bu çalışmada, Türkiye için endemik bir tür olan Marrubium trachyticum Boiss.’un taramalı elektron mikroskobu (SEM) kullanılarak gövde, yaprak, kaliks ve fındıkçığının mikromorfolojik özellikleri ve ışık mikroskobu kullanılarak kök, gövde ve yaprak anatomisi araştırıldı. M. trachyticum’un gövde, yaprak ve kaliksi üzerinde eşit olmayan ışınlı stellat tüyler ve dallanmış tüyler gözlendi. Bununla beraber, M. trachyticum’un bu vejetatif organları üzerindeki salgı tüylerinin dağılışı ve yoğunluğu, örtü tüylerinden daha azdır. Türün olgun fındıkçıkları, ovat şekilliydi ve yüzey süslemesi penta-hexagonal colliculate (beşgen-altıgen şekilli kabartılı)’dir. Anatomik sonuçlara göre, araştırılan tür, sekonder kök yapısına sahiptir. Gövdenin belirgin bir kollenkima tabakasına sahip olduğu gözlendi. Gövde enine kesiti dört köşelidir ve ince bir kutikulaya sahip oval veya dikdörtgen epidermis hücreleri ile çevrilidir. M. trachyticum’un yaprakları bifasiyaldir (dorsiventral). Bu tür, yaprağın hem alt hem de üst yüzeyinde anomositik tip stomalara sahiptir.

Anahtar Kelimeler:

Anatomy, Lamiaceae, Scanning electron microscopy (SEM), Turkey

MICROMORPHOLOGICAL AND ANATOMICAL CHARACTERS OF THE TURKISH ENDEMIC Marrubium trachyticum Boiss. (LAMIACEAE)

In the present study, micromorphological characters of stem, leaf, calyx and mericarp of the Turkish endemic Marrubium trachyticum Boiss were investigated using scanning electron microscopy (SEM) and the anatomy of root, stem and leaf using light microscopy (LM). Stellate trichomes with unequal rays and branched hairs were observed on the stem, leaf and calyx. The distributions and densities of glandular trichomes on these vegetative organs were less than the eglandular trichomes. The mature mericarps of the species were ovate in shape and sculpturing pattern was penta-hexagonal colliculate. According to the anatomical results, M. trachyticum has secondary root structure. The stem has a distinct collenchyma layer. The stem is surrounded by oval or rectangular epidermal cells with a thick cuticle and is quadrangular in shape. The leaves are bifacial (dorsiventral) with anomocytic stomata in both the upper and the lower surfaces.

Keywords:

Anatomy, Lamiaceae, Scanning electron microscopy (SEM), Turkey,

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