Anatomske karakteristike latica maćuhice (Viola x wittrockiana Gams.)

master's thesis

• Title (english): Anatomical characteristics of pansy petals
• Author: Ana Lihtar
• Mentor: Tatjana Prebeg (mentor)
• Committee member: Tatjana Prebeg (predsjednik povjerenstva)
• Committee member: Vesna Židovec (član povjerenstva)
• Committee member: Dubravka Dujmović Purgar (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Ornamental Plants, Landscape Architecture and Garden Art); Zagreb
• Defense date and country: 2017-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

U radu su istražene morfološke karakteristike epidermskih stanica i razmještaj pigmenata u laticama različitih kultivara maćuhice (Viola x wittrockiana Gams). Kod svih istraženih kultivara, stanice adaksijalne epiderme latica bile su čunjasto izbočene. Bočne stijenke ovih stanica su kod nekih kultivara bile ravne, a kod drugih prema bazalnom dijelu više ili manje proširene. Epidermske stanice na abaksijalnoj strani latica većinom su bile lećasto ili slabo čunjasto izbočene. U svih istraženih kultivara, stanice adaksijalne epiderme bile su znatno više te u bazalnom dijelu kraće nego stanice abaksijalne epiderme. Boju laticama davali su karotenoidi, antocijani ili oba pigmenta zajedno. Kromoplasti su bili najbrojniji u epidermskim stanicama, osobito na adaksijalnoj strani latica, a nešto kromoplasta bilo je prisutno i u mezofilu. Većina kromoplasta bila je smještena u bazalnom dijelu epidermskih stanica. Antocijani su opaženi samo u epidermi, a količina antocijana na adaksijalnoj strani latica redovito je bila veća nego na abaksijalnoj strani.

Abstract (english)

In this study, morphological characteristics of petal epidermal cells and pigment distribution in petal tissue were studied in different cultivars of pansy (Viola x wittrockiana Gams). In all investigated cultivars, adaxial epidermal cells were conical in shape. In some cultivars, these cells were mostly rather regularly conical, while in others, basal part of the cells were more or less extended. In the abaxial side of the petals, epidermal cells were mostly lens-shaped or slightly conical. In all investigated cultivars, adaxial epidermal cells were considerably higher, and in the basal part, narrower than in the abaxial petal epidermis. Petals contained carotenoids, anthocyanins or both classes of pigments. Carotenoids, located in chromoplasts, were mostly found in epidermal cells, especially on the adaxial side of the petals. However, some chromoplasts were also observed in the mesophyll. Most chromoplasts was located in the basal part of epidermal cells. Anthocyanins were found only in epidermal cells, and were regularly more abundant in the adaxial epidermis.

• Keywords: Viola x wittrockiana Gams.; latice; epidermske stanice; antocijani; karotenoidi
• Keywords (english): Viola x wittrockiana Gams.; petals; epidermal cells; anthocyanins; carotenoids
• Language: croatian
• URN:NBN: urn:nbn:hr:204:635536
• Study programme: Title: Horticulture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hortikulture (magistar/ magistra inženjer/inženjerka hortikulture)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-11-23 13:41:52