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

Institutional repository: Repository Faculty of Agriculture University of Zagreb

Cite this document

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

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

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

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 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:204:940175

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 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:204:940175

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

Metadata
TitleUnraveling the impact of salinity stress on gas exchange dynamics in barley
Title (croatian)Istraživanje utjecaja solnog stresa na dinamiku izmjene plinova kod ječma
AuthorDanijela Školjarev
MentorBoris Lazarević (mentor)
Committee memberBoris Lazarević (predsjednik povjerenstva)
Committee memberToni Safner (član povjerenstva)
Committee memberGabrijel Ondrašek (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Plant Nutrition)
Zagreb
Defense date and country2024-09-24, 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)
Languageenglish
URN:NBNurn:nbn:hr:204:940175
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsEmbargoed access
Embargo expiration date: 2025-07-25
Terms of useLicence In copyright icon
Created on2024-10-16 09:09:40