Comparative anatomy of flowering and sterile shoot leaf of Hedera helix L. (Araliaceae)

Year 2022, Volume: 15 Issue: 1, 22 - 29, 15.04.2022

Mert Ilhan , Muhammed Mesud Hürkul

https://doi.org/10.46309/biodicon.2022.992754

Cited By: 1

Abstract

Hedera helix L. is a medicinal plant and belongs to the Araliaceae family. Flowering shoots of the plant have elliptic-cordate and sterile shoots have palmately lobed leaves. Plant material was collected from Hacıkadın valley (Ankara-Turkey). The anatomical features of leaf and petiole were examined comparatively in this study. The results showed that both leaf types were dorsiventral. Single layer epidermis is covered by thick cuticle. The palisade parenchyma cell is oval-shaped in the flowering shoot mesophyll, also is elongated in the sterile shoots. In both leaf types, stomata are located in the lower epidermis. Flowering shoot leaf is covered with tufted hairs, sterile shoot leaf stellate hairs. The midrib of the leaves have a similar structure. Collenchyma tissue is located underside the upper and lower epidermal layers in the midrib. The vascular bundles are arc-form and tends to a ring-form. The sclerenchymatous tissue surrounds the vascular bundles and secretory canals are located in the adaxial side of the bundles. The leaves contain abundant druse crystals and starch grains. Petiole anatomy is similar in both leaf types. Unlike leaves, petioles are covered with stellate hairs, do not contain tufted-type. The collenchymatous tissue is located bottom the epidermal layer. The vascular bundles are embedded in the parenchymatous tissue and secretory canals are located on the adaxial side of petiole. Both petioles contain numerous druse crystals and starch grains.

Keywords

Hedera helix, Araliaceae, flowering shoot, sterile shoot, plant anatomy, Turkey

Hedera helix L. (Araliaceae)’in çiçekli ve çiçeksiz sürgün yapraklarının anatomik olarak karşılaştırılması

Abstract

Hedera helix L. Araliaceae familyasına ait tıbbi bir bitkidir. Bitkinin çiçekli sürgünleri eliptik-kordat ve çiçeksiz sürgünleri ise palmat yapraklara sahiptir. Bitki materyali Hacıkadın vadisinden (Ankara-Türkiye) toplanmıştır. Bu çalışmada yaprak ve yaprak sapının anatomik özellikleri karşılaştırmalı olarak incelenmiştir. İncelemelere göre, her iki yaprak tipinin de dorsiventral olduğu tespit edilmiştir. Tek tabakalı epiderma kalın kütikula ile kaplıdır. Çiçekli sürgünde palizat parankima hücreleri oval yapıda iken, çiçeksiz sürgünlerde uzamıştır. Her iki yaprak tipinde de stoma alt epidermada yer alır. Çiçekli sürgün yaprağı demet tüylerle kaplıdır, çiçeksiz sürgün yaprakları ise yıldız tüyler taşır. Yaprakların orta damarları benzer yapıya sahiptir. Kollenkima dokusu orta damarda alt ve üst epidermanın alt tarafında bulunmaktadır. İletim demetleri yay formunda ve halkalı yapıya yatkın bir şekildedir. Sklerenkima dokusu iletim demetini çevrelemektedir ve salgı kanalları iletim demetinin eksene bakan tarafındadır. Yapraklar bolca druz kristali ve nişasta taneleri bulundurmaktadır. Yaprak sapı anatomisi her iki yaprakta da benzerdir. Yaprakların aksine yaprak sapları yıldız tüylerle kaplıdır ve demet tüy bulundurmaz. Kollenkima dokusu epidermanın alt kısmındadır. İletim demetleri parankima dokusuna gömülüdür ve salgı kanalları yaprak sapının eksene bakan tarafındadır. Her iki yaprak sapı tipi de bolca druz kristali ve nişasta tanesi bulundurmaktadır.

Keywords

Hedera helix, Araliaceae, çiçekli sürgün, çiçeksiz sürgün, bitki anatomisi, Türkiye

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