Multispektralne analize u procjeni stresa suše kod graha

master's thesis

• Title (english): Multispectral analysis of drought stress estimation in common bean
• Author: Mia Milakara
• Mentor: Boris Lazarević (mentor)
• Committee member: Boris Lazarević (predsjednik povjerenstva)
• Committee member: Klaudija Carović-Stanko (član povjerenstva)
• Committee member: Hrvoje Kutnjak (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Plant Nutrition); Zagreb
• Defense date and country: 2020-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Grah (Phaseolus vulgaris L.) jedna je od najčešće uzgajanih mahunarki u svijetu čija je proizvodnja često izložena negativnom utjecaju suše.
Cilj ovog rada bio je utvrditi pogodnost multispektralnih analiza, odnosno vegetacijskih indeksa u detekciji stresa suše kod graha. U pokusu su korištena dva tretmana: 1. kontrolna otopina i 2. otopina s dodatkom polietilen glikola (PEG) kojom je stimulira stres suše. Korišteno je 5 tradicijskih kultivara graha ('Biser', 'Puter', 'Tetovac', 'Trešnjevac', 'Zelenčec'), od čega je u svakom tretmanu uzgajano po 5 biljaka. Šesti dan od primjene tretmana biljke su skenirane multispektralnim 3D skenerom za biljke. Analizirao se intenzitet refleksije elektromagnetnog zračenja u vidljivom dijelu spektra (crveni, plavi i zeleni), blisko infracrveno (NIR) i daleko crveno (FR). Na temelju tih podataka, izračunati su vegetacijski indeksi poput indeksa klorofila, indeksa antocijana i normaliziranog diferencijalnog vegetacijskog indeksa.
Značajne razlike utvrđene su između tretmana suše i kontrole za sve mjerene parametre osim za intenzitet refleksije elektromagnetskog zračenja u crvenom dijelu spektra. Dobiveni rezultati ukazuju na pogodnost korištenja multispektralnih analiza u procjeni stresa suše kod graha.

Abstract (english)

Common bean (Phaseolus vulgaris L.) is one of the most commonly grown legumes worldwide, whose production is often exposed to the negative effects of drought. The aim of this study was to determine the suitability of multispectral analysis, i.e. vegetation indices in the detection of drought stress in common bean. Two treatments were used in this experiment: 1. control solution and 2. solution with the addition of polyethylene glycol (PEG) which stimulates drought stress. 5 common bean landraces were used ('Biser', 'Puter', 'Tetovac', 'Trešnjevac', 'Zelenčec'), of which 5 plants were grown in each treatment. On the sixth day after application of the treatment, the plants were scanned with a multispectral 3D plant scanner. The intensity of reflection of electromagnetic radiation in the visible part of the spectrum (red, blue and green), near infrared (NIR) and far red (FR) were analysed. Based on these data, vegetation indices such as chlorophyll index, anthocyanin index and normalized differential vegetation index were calculated. Significant differences were found between drought treatment and control for all measured parameters except for the intensity of electromagnetic radiation reflection in the red part of the spectrum. The obtained results indicate the suitability of using multispectral analysis in the assessment of drought stress in beans.

• Keywords: suša; grah; multispektralne analize; vegetacijski indeksi
• Keywords (english): drought; common bean; multispectral analysis; vegetation indices
• Language: croatian
• URN:NBN: urn:nbn:hr:204:772817
• Study programme: Title: Agroecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologije (magistar/ magistra inženjer/inženjerka agroekologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-03-13 11:26:19