Variability of protein, oil and starch content in ZP maize inbred lines

Abstract

Starch, protein, and oil are most important storage chemical components in the mature kernels of maize. The aim of this study was to investigate chemical composition of grain of 100 maize inbred, from different heterotic groups. Average content of proteins, oil and starch of analyzed maize inbred lines was, 12,09%, 3,84% and 70,50% respectively. Lines from BSSS germplasm have the lowest content of protein and oil and the highest starch content while the lines from Lankester germplasm have the highest oil content, and lines from European germplasm have the highest protein content and the lowest starch content. Starch concentration is negatively correlated with both protein and oil concentrations in maize grain, while oil concentration has a positive relationship with protein concentration. Two inbred lines with high protein and oil content were distinguished L19 and L77 giving them potential use in breeding programs to improve protein and oil content.

Skrob, protein i ulje su najznačajnije hemijske komponente u zrnu kukuruza. Cilj rada je da se ispita hemijska kompozicija zrna sto linija kukuruza poreklom iz različitih heterotičnih grupa iz kolekcije Instituta za kukuruz. Prosečan sadržaj proteina, ulja i skroba je iznosio 12,09%, 3,84% i 70,50%. Linije iz BSSS germplazme imale su najniži sadržaj proteina i ulja, a najveći sadržaj skroba, dok su linije iz Lankaster germplazme imale najveći sadržaj ulja. Linije iz Evropske germplazme imale su najveći sadržaj proteina, a najmanji sadržaj skroba. Sadržaj skroba je u negativnoj korelaciji sa sadržajem proteina i ulja, dok su sadržaj proteina i ulja pozitivno korelisani. Linije L19 i L77, koje imaju visok sadržaj proteina i ulja, mogle bi da se koriste u programima selekcije na ova dva svojstva.