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master's thesis
Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.)
Zagreb: University of Zagreb, Faculty of Agriculture, 2022. urn:nbn:hr:204:975410
Ljubičić, Lovre
University of Zagreb
Faculty of Agriculture
Viticulture and Enology

Institutional repository: Repository Faculty of Agriculture University of Zagreb

Cite this document

Ljubičić, L. (2022). Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.) (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:975410

Ljubičić, Lovre. "Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.)." Master's thesis, University of Zagreb, Faculty of Agriculture, 2022. https://urn.nsk.hr/urn:nbn:hr:204:975410

Ljubičić, Lovre. "Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.)." Master's thesis, University of Zagreb, Faculty of Agriculture, 2022. https://urn.nsk.hr/urn:nbn:hr:204:975410

Ljubičić, L. (2022). 'Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.)', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:204:975410

Ljubičić L. Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.) [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2022 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:204:975410

L. Ljubičić, "Utjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.)", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:204:975410

Metadata
TitleUtjecaj kasne rezidbe u zrelo na fenologiju, prirod i kemijski sastav grožđa sorte 'Portugizac' (Vitis vinifera L.)
Title (english)Effect of delayed winter pruning of Portugieser grapevines on grape primary and phenolic composition
AuthorLovre Ljubičić
MentorMarko Karoglan (mentor)
Committee memberMarko Karoglan (predsjednik povjerenstva)
Committee memberAna Jeromel (član povjerenstva)
Committee memberAna-Marija Jagatić Korenika (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Viticulture and Enology)
Zagreb
Defense date and country2022-07-07, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Abstract
Utjecaj klimatskih promjena ima veliki utjecaj na odvijanje fenofaza vinove loze, a time i na samu kvalitetu i prinos grožđa. U posljednje vrijeme istražuju se načini koji će u praksi, unatoč klimatskim promjenama, pomoći grožđu da postigne zadovoljavajući rezultat. Jedan od takvih zahvata je i rezidba u zrelo koja se obavlja kasnije od uobičajenih termina. Cilj ovog rada bio je prikazati učinak kasne rezidbe na razvojni ciklus vinove loze, prinos i kemijski sastav grožđa sorte ˈPortugizacˈ, koji je zbog vrlo rane dobi dozrijevanja izabran kao pokusna sorta. Istraživanje je provedeno 2021. godine po slučajnom bloknom rasporedu sa tri tretmana rezidbe: uobičajena zimska rezidba (kontrola), rezidba u trenutku otvaranja pupa te rezidba u trenutku pojave 2-3 odvojena lista. Kroz provedeno istraživanje o utjecaju kasne rezidbe na kemijski sastav grožđa sorte ˈPortugizacˈ pokazano je da je kasna rezidba koja je bila provedena u vrijeme pupanja rezultirala smanjenjem sadržaja šećera, ali i ukupnih kiselina u grožđu, te povećanjem ukupnih polifenola, antocijana, flavonola, stilbena te fenolnih kiselina u kožici grožđa u odnosu na kontrolnu (zimsku) rezidbu provedenu tijekom mirovanja vinove loze. Kasna rezidba provedena u terminu otvaranja 2-3 lista loze rezultirala je smanjenjem sadržaja šećera, ali i ukupnih polifenola i antocijana, te povećanjem koncentracije ukupne kiselosti, ukupnih flavanola, stilbena i fenolnih kiselina.
Abstract (english)
The effect of climate change has a great influence on the development of the phenophases of the grapevine, and consequently on the quality and yield of the grapes. Recently, new methods have been researched that could help grapes to achieve a satisfactory result, despite climate changes. One of such interventions is late pruning, which is performed later than usual. The aim of this work was to demonstrate the effect of late pruning on the development cycle of the grapevine, yield and chemical composition of grapevien variety ˈPortugizacˈ, which was chosen as an experimental variety due to its early ripening. The research was conducted in 2021 according to a random block arrangement with three pruning treatments: standard winter pruning (control), pruning at the moment of budbreak and pruning at the moment of appearance of 2-3 separate leaves. ˈ Through the conducted research on the influence of late pruning on the chemical composition of grapes ˈPortugizacˈ, it was concluded that late pruning, which was performed at the time of budburst, resulted in a decrease in the content of sugar, but also in total acids, and in an increase in total polyphenols, anthocyanins, flavonols, stilbenes and phenolic acids in the grape skin compared to the standard winter pruning. Late pruning performed at the time of opening of 2-3 leaves resulted in a decrease in sugar content, but also in total polyphenols and anthocyanins, and in an increase in the concentration of total acidity, total flavanols, stilbene and phenolic acids.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:204:975410
Study programmeTitle: Horticulture
Study programme type: university
Study level: graduate
Academic / professional title: magistar/ magistra inženjer/inženjerka hortikulture (magistar/ magistra inženjer/inženjerka hortikulture)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2022-08-18 10:51:20