Unraveling the impact of salinity stress on gas exchange dynamics in barley

Školjarev, Danijela

prikaz prve stranice dokumenta Unraveling the impact of salinity stress on gas exchange dynamics in barley

Embargo period 2025-07-25

master's thesis

Unraveling the impact of salinity stress on gas exchange dynamics in barley

Zagreb: University of Zagreb, Faculty of Agriculture, 2024. urn:nbn:hr:204:940175

Školjarev, Danijela

University of Zagreb
Faculty of Agriculture
Plant Nutrition

Cite this document

APA 6th Edition

Školjarev, D. (2024). Unraveling the impact of salinity stress on gas exchange dynamics in barley (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:940175

MLA 8th Edition

Školjarev, Danijela. "Unraveling the impact of salinity stress on gas exchange dynamics in barley." Master's thesis, University of Zagreb, Faculty of Agriculture, 2024. https://urn.nsk.hr/urn:nbn:hr:204:940175

Chicago 17th Edition

Harvard

Školjarev, D. (2024). 'Unraveling the impact of salinity stress on gas exchange dynamics in barley', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 24 January 2025, https://urn.nsk.hr/urn:nbn:hr:204:940175

Vancouver

Školjarev D. Unraveling the impact of salinity stress on gas exchange dynamics in barley [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2024 [cited 2025 January 24] Available at: https://urn.nsk.hr/urn:nbn:hr:204:940175

IEEE

D. Školjarev, "Unraveling the impact of salinity stress on gas exchange dynamics in barley", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:204:940175

Cite this item: https://urn.nsk.hr/urn:nbn:hr:204:940175

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Metadata

Title	Unraveling the impact of salinity stress on gas exchange dynamics in barley
Title (croatian)	Istraživanje utjecaja solnog stresa na dinamiku izmjene plinova kod ječma
Author	Danijela Školjarev
Mentor	Boris Lazarević (mentor)
Committee member	Boris Lazarević (predsjednik povjerenstva)
Committee member	Toni Safner (član povjerenstva)
Committee member	Gabrijel Ondrašek (član povjerenstva)
Granter	University of Zagreb Faculty of Agriculture (Plant Nutrition) Zagreb
Defense date and country	2024-09-24, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Agronomy
Abstract	This study investigated the effects of salt stress on the physiological responses of barley (Hordeum vulgare L.) by analyzing the transpiration rate (E), photosynthetic rate (A), intercellular CO2 concentration (Ci), stomatal conductance (gsw), and A/Ci ratio under varying NaCl concentrations (50, 100, 200 mM) over three measurement periods (24, 72 and 168 hours). Results showed that by the final measurement time, salt stress reduced E, A, Ci and gsw, particularly at 200 mM NaCl, where reductions of 34% in E, 27% in A, 35% in gsw, and 19% in Ci were recorded compared to control. While severe salinity led to marked physiological inhibition, plants subjected to moderate salt stress (50 and 100 mM NaCl) showed signs of recovery in E, A, Ci and gsw measurements, suggesting potential acclimation mechanisms. The findings contribute to a deeper understanding of barley's tolerance to salinity, offering insights into developing salt-tolerant crops for saline-affected regions.
Abstract (croatian)	Ova studija istražuje fiziološke odgovore ječma (Hordeum vulgare L.) na solni stres, s naglaskom na analizu stope transpiracije (E), fotosintetske stope (A), koncentracije međustaničnog CO₂ (Ci), provodljivosti puči (gsw) te omjera A/Ci, pri različitim koncentracijama NaCl (50, 100 i 200 mM) tijekom tri vremenska intervala mjerenja (24, 72 i 168 sati). Rezultati pokazuju da je do kraja eksperimentalnog perioda solni stres značajno smanjio E, A, Ci i gsw, posebno pri koncentraciji od 200 mM NaCl. Zabilježen je pad od 34% za E, 27% za A, 35% za gsw i 19% za Ci u odnosu na kontrolnu skupinu. Iako je visok stupanj saliniteta rezultirao izraženom fiziološkom inhibicijom, biljke izložene umjerenom stresu (50 i 100 mM NaCl) pokazale su znakove oporavka u parametrima E, A, Ci i gsw, što upućuje na potencijalne mehanizme prilagodbe. Ovi rezultati pridonose boljem razumijevanju mehanizama tolerancije ječma na stres izazvan salinitetom, pružajući vrijedne informacije za razvoj sorti usjeva otpornijih na slane uvjete tla.
Keywords
Keywords (english)
Language	english
URN:NBN	urn:nbn:hr:204:940175
Study programme	Title: Environment, Agriculture and Resource Management Study programme type: university Study level: graduate Academic / professional title: Master of Engineering in Agriculture (Master of Engineering in Agriculture)
Type of resource	Text
File origin	Born digital
Access conditions	Embargoed access Embargo expiration date: 2025-07-25
Terms of use
Repository	Repository Faculty of Agriculture University of Zagreb
Created on	2024-10-16 09:09:40