Utjecaj laserskog zračenja na klijavost i energiju klijanja kadulje

master's thesis

• Title (english): The influence of laser radiation on the germination and germination energy of sage
• Author: Erik Margetić
• Mentor: Ante Galić (mentor)
• Committee member: Ante Galić (predsjednik povjerenstva)
• Committee member: Stjepan Pliestić (član povjerenstva)
• Committee member: Martina Grdiša (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Sustainable Technologies and Renewable Energy Sources); Zagreb
• Defense date and country: 2025-02-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Kadulja (Salvia officinalis L.) je aromatični, djelomično drvenasti višegodišnji grm iz
porodice Lamiaceae,. Primarno stanište prirodnih populacija ljekovite kadulje je sredozemno
krško područje s istočne strane Jadranskog mora. Uzgaja se za kulinarske i medicinske svrhe.
Cilj rada bio je utvrditi mogućnost primjene laserskog zračenja kao stimulatora klijavosti
sjemena i energija klijanja kadulje. Laseri kao biostimulatori predaju biljnim stanicama
dodatnu energiju u vidu koherentnog zračenja, čime mogu pozitivno utjecati na energiju
klijanja i standardnu klijavost sjemenskog materijala. Sjeme kadulje tretirano je u
elementarnom sloju laserima izlaznih snaga od 100, 200 i 500 mW u trajanju od 30, 60 i 120 s.
Analiza klijavosti provedena je standardnom metodom. Istraživanje je pokazalo da je
intenzitet zračenja po sjemenki relativno nizak, što sugerira da laser prvenstveno djeluje na
biljni materijal putem biostimulacijskog učinka. Tretmani laserom snage 100 i 200 mW
uglavnom su rezultirali povećanjem energije klijanja i standardne klijavosti sjemena. Najbolji
učinak zabilježen je kod tretmana laserom snage 100 mW tijekom 120 sekundi, pri čemu je
energija klijanja porasla za 12 %, a standardna klijavost za 8 %. Nasuprot tome, tretmani
laserom snage 500 mW u trajanju od 30 i 120 sekundi uzrokovali su smanjenje energije klijanja
i klijavosti, što ukazuje na mogućnost oštećenja sjemena pri višim dozama zračenja.

Abstract (english)

Sage (Salvia officinalis L.) is an aromatic, partially woody, perennial shrub from the
Lamiaceae family. It is native to Mediterranean karst on East side of Adriatic It is cultivated for
culinary and medicinal purposes. The aim of the study was to determine the possibility of using
laser radiation as a germination stimulator for seeds and the germination energy of sage.
Lasers as biostimulators provide the plant cells with additional energy in the form of coherent
radiation, which can have a positive effect on germination energy and the standard
germination of seed material. Sage seeds were treated in the elementary layer with lasers
with output powers of 100, 200 and 500 mW for 30, 60 and 120 s, respectively. The
germination analysis was carried out using the standard method. The studies showed that the
radiation intensity per seed was relatively low, suggesting that the laser acts primarily through
a biostimulant effect on the plant material. Treatments with lasers with a power of 100 and
200 mW mainly led to an increase in germination energy and standard seed germination. The
best effect was observed with a 100 mW laser treatment over 120 seconds, increasing
germination energy by 12 % and standard germination by 8 %. In contrast, 500 mW laser
treatments for 30 and 120 seconds resulted in a decrease in germination energy and
germination capacity, indicating the possibility of damage to the seeds at higher radiation
doses.

• Keywords: energija klijanja; klijavost; laser; kadulja
• Keywords (english): germination energy; germination; laser; sage
• Language: croatian
• URN:NBN: urn:nbn:hr:204:999382
• Study programme: Title: Agricultural Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-03-04 09:42:31