Salt tolerance of corn genotypes (Zea mays L.) during germination and later growth

Abstract

Since corn is grown in climatically diverse regions and under different production conditions, assuming that high salinity in the substrate affect corn seed performance, such conditions were simulated in this study in order to examine their effects on seedling geminability and length in several corn genotypes. The study showed that the tested seeds tolerated the stress conditions up to a certain point. The studied genotypes differed in level of resistance to the stress conditions. Salt concentrations were determined, which were capable of affecting negatively seed germinability and seedling growth.S obzirom na sirok areal rasprostranjenja i na razlicite uslove proizvodnje, seme kukuruza izlozeno je razlicitim stresnim uslovima koji vladaju u pojedinim rejonima. Seme razlicitih genotipova kukuruza izlozeno je razlicitim nepovoljnim faktorima. Simulirani su uslovi povecanog sadrzaja soli u supstratu kao i njihov uticaj na klijavost i duzinu klijanca kod pojedinih genotipova kukuruza. Seme svih biljnih vrsta je osetljivo na nepovoljne uslove koji se mogu javiti u prirodi. Povecan sadrzaj soli moze da utice na smanjenje klijavosti semena kukuruza kao i na smanjenje duzine korena i duzine ponika. Ispitivanja su pokazala razliku izmedju genotipova u otpornosti na stresne uslove. Takodje ispitivanjem su utvrdjene koncentracije koje mogu imati negativan uticaj kako na klijavost semena tako i na porast klice. Istrazivanje je pokazalo da ispitivano seme moze podneti odredjene nepovoljne uslove.