Trichomes Morphology on Petals of Some Acanthaceae Species

Abstract

about the phylogenetic of this plant family is very little and thus prevent from comparative study being conducted. Not only known as horticulture plant, this family also have an economic value and useful for medicinal purposes (Grant, 1955).Trichomes are defined as unicellular or multicellular appendages, which originates from the epidermal cells and develop outwards on the surface of various plant organs and often covered the aerial organs or plants, and the morphology of trichomes structures vary greatly between species (Werker, 2000). Cutler et al. (2008) stated that, trichomes are hairs, papillae and scales that exhibit the same wide INTRODUCTIONAcanthaceae is a plant family under the order Lamiales with at least of 4000 tropical and subtropical species (Borg, 2008). There are three subfamilies in Acanthaceae which are Acanthoideae, Thunbergioideae and also Nelsonioideae (Borg &Schonenberger, 2011). Acanthaceae is known as third largest tropical plant family after Myrtaceae and Melastomataceae (Grant, 1955). According to McDade et al. (2008), even though Acanthaceae is an important plant family in the tropical and subtropical countries of the world, the information Studi ini dilakukan untuk mengetahui morfologi trikom yang terdapat pada permukaan daun mahkota bunga. Dalam studi ini ditemukan variasi pada tipe dan kepadatannya. Berdasarkan hasil pengamatan semua jenis diketahui terdapat dua bentuk trikom yaitu berbentuk kelenjar dan tidak berkelenjar. Terdapat tujuh macam trickom pada pengamatan ini. Tipe trikom secara sistematika menunjukkan karakter diagnostik untuk membedakan serta mengidentifikasi beberapa jenis Acanthaceae pada studi ini. TRICHOMES MORPHOLOGY ON PETALS OF SOME ACANTHACEAE SPECIES

Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications

“…Trichomes attributes such as density of glandular trichomes on adaxial and abaxial leaf surface, non-glandular trichomes type and presence of multicellular foot cell of non-glandular trichomes are diagnostic and can be used in separating the species. This finding support earlier works that the presence or absence of different types, sizes and numbers of trichomes as good diagnostic features for taxonomic studies (Juhari et al 2014;Zakaria et al 2022). Epidermal cell pattern such as shape and anticlinal cell wall of epidermal cell also affirms their strength in delimiting the taxa, especially at the species level.…”

“…Hence, trichomes can be used as a good diagnostic character to distinguish each plant taxa at species level because they show a great variation qualitatively and quantitatively (Muzzazinah et al 2021). The occurrence of trichomes, variation in their morphological form and density on both leaf surfaces are then considered important for providing taxonomic relationships of the studied taxa (Juhari et al 2014;Singh et al 2020;Zakaria et al 2022).…”

Comparison of morphological characters, flowering phenology and essential oils of two accessions of Cananga (Cananga odorata var. fruticosa)

“…There are two types of trichomes, namely glandular and non-glandular. Glandular trichomes have a bubbly shape containing secondary metabolites, while nonglandular trichomes have branched or unbranched unicellular or multicellular forms (Juhari et al 2014). Some trichome genes can be involved in flower biosynthesis to produce odors, taste, color, and secondary metabolite compounds (Li et al 2020).…”