Seed Mucilage Contents in Some Taxa of Aubrieta Adans. Genus (Brassicaceae) and Their Systematic Importance

Abstract

In this study, mucilage characterization and their systematic importance in the seeds of the 3 Aubrieta taxa, which are A. deltoidea, A. canescens subsp. canescens and A. canescens subsp. cilicica have discussed. In the examined taxa have found mucilage cells on the seed surface, and they have formed a slippery liquid in contact with water. The mucilage in the studied taxa are made up of the pectin or cellulose structures. Furthermore, there were variations in columellae figures in the examined Aubrieta taxa, which are in reduced, prominent, or flattened figures. Also, soil adhesion volumes of the studied taxa varied between 83 mg and 175 mg. The occurrence of mucilage may provide an important role in seed scattering and colonization in terms of the new habitation in Aubrieta taxa.

Keywords

• Aubrieta,cellulose,morphology,mucilage,myxospermy,pectin

Aubrieta Adans. Cinsinin Bazı Taksonlarındaki Tohum Musilaj İçerikleri ve Onların Sistematik Önemi

Öz

Bu çalışmada, 3 Aubrieta taksonunun (A. deltoidea, A. canescens subsp. canescens ve A. canescens subsp. cilicica) tohumlarındaki musilaj karakterizasyonu ve onların sistematik önemi tartışılmıştır. Ġncelenilen taksonlarda tohumların yüzeyinde su ile temas halinde kaygan bir sıvı üreten musilaj hücreleri bulunmuştur. Çalışılan taksonlardaki musilaj pektin veya selüloz yapıdadır. Dahası, incelenilen taksonlardaki kolumela şekillerinde belirgin, indirgenmiş ve yassılaşmış şekillerde varyasyonlar vardır. Ayrıca, çalışılan taksonların toprağa yapışma kapasiteleri 83 mg ve 175 mg arasında değişmiştir. Musilaj oluşumu Aubrieta taksonlarında yeni habitasyon açısından tohum dağılımı ve kolonizasyonda önemli bir rol sağlayabilir.

Anahtar Kelimeler

• Aubrieta,selüloz,morfoloji,musilaj,miksospermi,pektin

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