Utjecaj suše na morfološke i fiziološke značajke te sastav i udio hlapljivih komponenti kod dva ekotipa istarskog češnjaka

master's thesis

• Title (english): The impact of drought on morphological and physiological traits and the composition and proportion of volatile components in two ecotypes of Istrian garlic
• Author: Zrinka Banjavčić
• Mentor: Ivanka Habuš Jerčić (mentor)
• Committee member: Ivanka Habuš Jerčić (predsjednik povjerenstva)
• Committee member: Boris Lazarević (član povjerenstva)
• Committee member: Snježana Kereša (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Plant Breeding Genetics, Biometrics and Experimentation); Zagreb
• Defense date and country: 2022-09-16, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Suša negativno utječe na biljke mijenjajući morfološke, fiziološke i metaboličke procese, a štete od suše uzrokuju smanjen prinos. Stoga su biljke stvorile različite mehanizme obrane od nedostatka vode. Češnjak je važna kultura iz porodice Alliaceae, koja ima značajnu ulogu u poljoprivrednoj proizvodnji. Cilj ovog rada je utvrditi učinak suše na morfološke i fiziološke značajke te sastav i udio hlapljivih komponenti kod dva ekotipa istarskog češnjaka (Istarski crveni i Istarski bijeli). Korištenjem otopina dvije različite koncentracije PEG-a inducirana je suša na biljkama češnjaka. Multispektralna mjerenja rađena su pomoću CropReporterTM uređaja. Analiza hlapljivih komponenti provedena je primjenom vezanog sustava plinski kromatograf-spektrometar masa. Temeljem provedenih analiza utvrđeno je da je jači stres suše kod oba ekotipa utjecao na: smanjenje mase, duljine biljke, broja listova, mPSII, ETR, CHI, ARI te povećanje duljine korijena, sadržaja alkohola, kiselina, tiola, monosulfida, disulfida i trisulfida. Na osnovu dobivenih rezultata utvrđeno je da je Istarski crveni tolerantniji na stres suše od Istarskog bijelog.

Abstract (english)

Drought negatively affects plants by changing morphological, physiological and metabolic processes, furthermore damage caused by drought reduces yield. Therefore, plants have created different defense mechanisms against water shortage. Garlic is an important crop from the Alliaceae family, which plays a significant role in agricultural production. The aim of this work is to determine the effect of drought on morphological and physiological features and the composition and proportion of volatile components in two ecotypes of Istrian garlic (Istrian red and Istrian white). By using solutions of two different concentrations of PEG, drought was induced on garlic plants. Spectrophotometric measurements were made using the CropReporterTM device. Analysis of volatile components was performed using a coupled gas chromatograph-mass spectrometer system. Based on the conducted analyses, it was determined that stronger drought stress in both ecotypes affected: a decrease in mass, plant length, number of leaves, mPSII, ETR, CHI, ARI and an increase in root length, alcohol, acid, thiol, monosulfide, disulfide and trisulfide content. Based on the obtained results, it was determined that Istrian red is more tolerant to drought stress than Istrian white.

• Keywords: češnjak; suša; morfološka svojstva; multispektralna svojstva; hlapljivi organski spojevi
• Keywords (english): garlic; drought; morphological traits; spectrophotometric traits; volatile organic compounds
• Language: croatian
• URN:NBN: urn:nbn:hr:204:200186
• Study programme: Title: Plant Sciences; Study programme type: university; Study level: graduate; Academic / professional title: magistar / magistra inženjer/inženjerka biljnih znanosti (magistar / magistra inženjer/inženjerka biljnih znanosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to authenticated users
• Created on: 2022-10-04 11:56:19