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2021, vol. 27, br. 2, str. 47-57
Antioksidanti iz semena kukuruza i ubrzano starenje
Institut za kukuruz 'Zemun polje', Beograd-Zemun

e-adresankravic@mrizp.rs
Projekat:
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije (institucija: Institut za kukuruz 'Zemun polje', Beograd-Zemun) (MPNTR - 451-03-68/2020-14/200040)

Sažetak
Propadanje semena se ogleda u gubitku životne sposobnosti, energije i kvaliteta. Dejstvo slobodnih radikala dovodi do peroksidacije lipida, inaktivacije enzima, degradacije proteina, razaranja ćelijskih membrana i oštećenja genetičkog materijala, i smatra se glavnim uzrokom propadanja semena. Ubrzano starenje, kao metod, omogućava proučavanje mehanizama propadanja semena u kratkom vremenskom periodu. Za procenu stepena propadanja, seme četiri genotipa kukuruza je izloženo tretmanu ubrzanog starenja u trajanju od tri i šest dana. Uporedo sa ovim, kod istih genotipova je ispitivan sadržaj ukupnih fenola, fenolnih kiselina, flavonoida i antocijana, kao i ukupni antioksidativni kapacitet. Poređenjem sa nestresiranim semenom (kontrola), starenje je rezultiralo padom energije klijavosti (48,9%), smanjenjem ukupnog broja klijanaca (40,8%), smanjenjem rasta klijanaca (70,0% za dužinu korena, 44,0% i 10,5% za svežu masu korena i izdanka, 5,0% za svežu masu semenog ostatka, 12 .0% i 11 .5% za suvu masu korena i izdanka, 15 .3% za suvu masu semenog ostatka, respektivno), kao i povećanjem broja nenormalnih klijanaca (22,0%). Korelacionom analizom je utvrđeno da je povećani sadržaj ukupnih fenola, flavonoida i antocijana doprineo većoj sposobnosti gušenja slobodnih radikala, reflektujući se kroz smanjen stepen propadanja semena, kako u pogledu energije klijavosti, tako i u pogledu ukupne performanse klijanca.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/SelSem2102047K
primljen: 29.11.2021.
prihvaćen: 14.12.2021.
objavljen u SCIndeksu: 21.01.2022.
Creative Commons License 4.0

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