prikaz prve stranice dokumenta Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)
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master's thesis
Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)
Zagreb: University of Zagreb, Faculty of Science, 2019. urn:nbn:hr:217:879819
Fistanić, Stjepana
University of Zagreb
Faculty of Science
Department of Biology

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Fistanić, S. (2019). Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala) (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:879819

Fistanić, Stjepana. "Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)." Master's thesis, University of Zagreb, Faculty of Science, 2019. https://urn.nsk.hr/urn:nbn:hr:217:879819

Fistanić, Stjepana. "Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)." Master's thesis, University of Zagreb, Faculty of Science, 2019. https://urn.nsk.hr/urn:nbn:hr:217:879819

Fistanić, S. (2019). 'Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)', Master's thesis, University of Zagreb, Faculty of Science, accessed 25 April 2024, https://urn.nsk.hr/urn:nbn:hr:217:879819

Fistanić S. Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala) [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2019 [cited 2024 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:217:879819

S. Fistanić, "Utjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:217:879819

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Metadata
TitleUtjecaj niskih temperatura na sadržaj specijaliziranih metabolita u klijancima raštike (Brassica oleracea var. acephala)
Title (english)Effects of low-temperature stress on the level of specialized metabolites in kale (Brassica oleracea var. acephala) sprouts
AuthorStjepana Fistanić
MentorDunja Šamec (mentor)
MentorSandra Radić Brkanac (mentor)
Committee memberSandra Radić Brkanac (predsjednik povjerenstva)
Committee memberInes Radanović (član povjerenstva)
Committee memberIva Juranović Cindrić (član povjerenstva)
Committee memberVesna Petrović Peroković (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2019-02-22, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Klimatske promjene izazivaju češće periode ekstremnih temperatura koje značajno utječu na poljoprivrednu proizvodnju. Neke su biljne vrste otpornije na temperaturne ekstreme, a jedna od njih je i raštika (Brassica oleracea var. acephala). Stoga, cilj ovog rada je praćenje odgovora klijanaca raštike na stres izazvan niskim temperaturama kroz tri uzgoja (I., II., III.). Klijanci raštike stari tri dana izloženi su temperaturi pothlađivanja (8 ºC) (24 h: I., II. i III. uzgoj) te smrzavanja (−8 ºC) (24 h: u II. te 4 h u III. uzgoju) u usporedbi s kontrolom (21 ºC). Sniženje temperature usporilo je fiziološke procese te su klijanci izloženi nižim temperaturama imali kraće korijenje te posljedično manji prinos. Stres se odrazio i na biokemijske promjene te je kod klijanaca izloženih nižim temperaturama izmjerena viša razina prolina kao markera stresa te niža razina klorofila. Izloženost temperaturama pothlađivanja nije značajno utjecala na razinu ukupnih polifenola, flavonoida, fenolnih kiselina te antioksidacijsku aktivnost, dok je izloženost temperaturi smrzavanja utjecala na smanjenje ukupnih polifenola i fenolnih kiselina kod drugog uzgoja gdje je duljina izlaganja toj temperaturi bila 24 h. Izlaganje temperaturi smrzavanja izazvalo je i smanjenje količine ukupnih karotenoida, dok razina glukozinolata nije pokazala jasan trend s obzirom na temperaturu i različito vrijeme uzgoja.
Abstract (english)
Climate change induces more frequent periods of extreme temperatures which significantly influence agricultural production. Some plant species, including kale (Brassica oleracea var. acephala), are more resistant to temperature extremes than others. Therefore, the purpose of this study is to monitor the responses of kale sprouts to low temperature stress trought three experiments (I., II., III.). Three days old plants were exposed to chilling (8º C) (24 h at I., II., III.) and freezing (−8 ºC) (24 h at II., 4h at III.) stress in comparison with control (21 ºC). Lowering the temperature slowed the physiological processes and the sprouts exposed to lower temperatures had shorter roots and consequently lower yield. The stress also reflected in biochemical changes - the higher level of proline, the stress marker, and the lower level of chlorophyll were measured in the sprouts exposed to lower temperatures. The exposure to the chilling temperature did not significantly influence the level of the total polyphenols, flavonoids, phenolic acids or antioxidant activity, while the exposure to the freezing temperature resulted in lowering the level of the total polyphenols and phenolic acids in the second cultivation in which the length of exposure to that temperature was 24 h. The exposure to the freezing temperature caused the total amount of carotenoids to decrease, while the level of the glucosinolates did not show a clear trend with regard to temperature and the time of cultivation.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:879819
Study programmeTitle: Integrated undergraduate and graduate university study of Biology and Chemistry Education; specializations in: Integrated undergraduate and graduate university study of Biology and Chemistry Education
Course: Integrated undergraduate and graduate university study of Biology and Chemistry Education
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra edukacije biologije i kemije (magistar/magistra edukacije biologije i kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2020-02-22
Terms of useLicence In copyright icon
RepositoryRepository of the Faculty of Science
Created on2019-03-26 09:16:23

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