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Termalne karakteristike fotosintetičkog aparata samooplodnih linija kukuruza

dc.creatorRadenović, Čedomir
dc.creatorDelić, Nenad
dc.creatorBabić, Milosav
dc.creatorPavlov, Milovan
dc.creatorSelaković, Dragojlo
dc.date.accessioned2019-05-16T12:03:59Z
dc.date.available2019-05-16T12:03:59Z
dc.date.issued2002
dc.identifier.issn0354-5695
dc.identifier.urihttp://rik.mrizp.rs/handle/123456789/31
dc.description.abstractThe delayed chlorophyll fluorescence method was used to determine the following thermal properties of photosynthetic apparatus of the observed maize inbred lines: the temperature dependence within the range of 25-60oC critical temperatures at which phase transitions occur in the thylakoid membrane, and by means of it, significant functional changes in the photosynthetic apparatus of these inbred lines were detected. activation energies (Ea, kJ mol-1) alongside the straight lines prior and after critical temperatures were calculated. Ea is a measure of occurrence of chlorophyll DF recombination processes and by that a measure of the total changes in structure and functioning of the thylakoid membranes. Results and the discussion of presented parameters of total thermal processes of chlorophyll DF, such as: temperature dependence, critical temperatures and activation energy, can be an important factor for a more exact characterisation of maize inbred lines in relation to their resistance and adaptation to temperature and drought, contributing to a rapider and more rational development of the selection process.en
dc.description.abstractMetodom zakasnele fluorescencije hlorofila utvrđene su termalne karakteristike fotosintetičkog aparata proučavanih samooplodnih linija kukuruza, i to: određena je temperaturna zavisnost u opsegu od 25 do 60oC, otkrivene su kritične temperature na kojima dolazi do faznih transformacija u tilakoidnoj membrani, a time i do značajnih funkcionalnih promena u fotosintetičkom aparatu ispitivanih samooplodnih linija kukuruza, obračunate su energije aktivacije (Ea kJ/mol) duž pravih linija pre i posle kritične temperature. Ea je mera nastajanja rekombinacionih reakcija povezanih sa uspostavljanjem zakasnele fluorescencije (ZF) hlorofila, a time i ukupnih promena u strukturi i funkciji tilakodinih membrana. Rezultati i diskusija izloženih parametara ukupnih terminalnih procesa ZF hlorofila, kao što su: temperaturna zavisnost, kritične temperature i energija aktivacije mogu doprineti egzaktnijem karakterisanju i trijaži samooplodnih linija kukuruza i linija u procesu selekcije u odnosu na njihovu otpornost i adaptivnost prema temperaturi i suši, što doprinosi bržem i racionalnijem odvijanju procesa selekcije.sr
dc.publisherSavez poljoprivrednih inženjera i tehničara, Beograd
dc.rightsopenAccess
dc.sourceJournal of Scientific Agricultural Research
dc.subjectfotosintetički processr
dc.subjectsamooplodna linija kukuruzasr
dc.subjecttilakoidna membranasr
dc.subjectzakasnela fluorescencijasr
dc.titleThermal properties of photosynthetic apparatus in maize inbred linesen
dc.titleTermalne karakteristike fotosintetičkog aparata samooplodnih linija kukuruzasr
dc.typearticle
dc.rights.licenseARR
dc.citation.volume63
dc.citation.issue1-2
dc.citation.spage61
dc.citation.epage74
dc.citation.other63(1-2): 61-74
dc.identifier.fulltexthttp://rik.mrizp.rs//bitstream/id/2233/29.pdf
dc.identifier.rcubconv_167
dc.type.versionpublishedVersion


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