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master's thesis
OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM
2015. urn:nbn:hr:181:367773
Mihaljević, Ljuba
Josip Juraj Strossmayer University of Osijek
Department of biology

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Mihaljević, Lj. (2015). OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of biology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:181:367773

Mihaljević, Ljuba. "OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, 2015. https://urn.nsk.hr/urn:nbn:hr:181:367773

Mihaljević, Ljuba. "OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, 2015. https://urn.nsk.hr/urn:nbn:hr:181:367773

Mihaljević, Lj. (2015). 'OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, accessed 27 December 2024, https://urn.nsk.hr/urn:nbn:hr:181:367773

Mihaljević Lj. OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of biology; 2015 [cited 2024 December 27] Available at: https://urn.nsk.hr/urn:nbn:hr:181:367773

Lj. Mihaljević, "OPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, Osijek, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:181:367773

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Metadata
TitleOPORAVAK KLIJANACA JEČMA REHIDRACIJOM NAKON STRESA IZAZVANOG SUŠOM
Title (english)RECOVERY OF DROUGHT STRESSED BARLEY SEEDLINGS BY RE-WATERING
AuthorLjuba Mihaljević
MentorVera Cesar (mentor)
Committee memberJanja Horvatić (predsjednik povjerenstva)
Committee memberVera Cesar (član povjerenstva)
Committee memberIvna Štolfa Čamagajevac (član povjerenstva)
Committee memberVesna Peršić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of biology
Osijek
Defense date and country2015-07-21, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Tolerancija na sušu jedna je od najčešće istraživanih značajki s obzirom na globalni problem nedostatka vode. U ovom radu cilj je bio utvrditi pri kojoj najnižoj vrijednosti relativnog sadržaja vode u listu (RWC) je ponovnim usvajanjem vode moguć oporavak fizioloških i biokemijskih procesa, s posebnim naglaskom na fotosintetski aparat. Ječam (Hordeum vulgareL.) je uzgajan deset dana u uzgojnoj komori i potom izložen suši u trajanju od 7 do 10 dana,ovisno o eksperimentu, nakon čega je uslijedio oporavak rehidracijom tijekom četiri dana.Rezultati mjerenja fluorescencije klorofila a pokazali su da je kritična točka za mogućnost oporavka fotosintetskih procesa rehidracijom osmi dan suše, odnosno RWC od 21 %. Indeksfotosintetske učinkovitosti (PIABS) na kraju perioda rehidracije porastao je do kontrolnih vrijednosti što je ukazalo na potpuni oporavak fotosintetskog aparata. Unatoč tome što se ostali mjereni parametri (RWC, razina lipidne peroksidacije i sadržaj slobodnog prolina) nisu u potpunosti izjednačili s kontrolama pokazana je visoka tendencija ka ponovnom uspostavljanju homeostaze koja je prethodno bila narušena snažnom sušom
Abstract (english)
Drought tolerance is one of the most studied features considering the global problem of water deficit. The main goal of this study was to determine the lowest value of relative water content in leaf (RWC) in which re-watering might recover physiological and biochemical processes, with particular emphasis on the photosynthetic apparatus. Barley seedlings (Hordeumvulgare L.) were cultivated in the growth chamber for ten days and then subjected to drought. The drought lasted from 7 to 10 days, depending on the experiment, after which the plants were re-watered daily for four days. The results of chlorophyll a fluorescence measurements showed that the critical point for photosynthesis recovery is the eighth day of drought or RWC of 21%,respectively. At the end of the rehydration, increased performance index (PIABS) reached the valueas in control and thus pointed to a full recovery of the photosynthetic apparatus. Despite the fact that the other measured parameters (RWC, the level of lipid peroxidation and free proline content)were not fully equalized with the controls, observed results indicated a high tendency for the re-establishment of homeostasis, previously disrupted by severe drought.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:181:367773
Study programmeTitle: Master of Science Graduate University Study Programme in Biology; specializations in: Master of Biology
Course: Master of Biology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra biologije (magistar/magistra biologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2017-01-20 08:28:56