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Due to the low biological value of proteins of common maize, it was  reinitiated breeding for high protein quality maize (HQPM) using three  genetic systems, namely: opaque-2 gene, endosperm modifier genes and enhancer  genes, which are increasing lysine and tryptophan content in opaque-2  background In order to alleviate effect of abiotic and biotic stress factors,  the genotypes with tolerance to those factors were included. Genetic  resources originating from North, Central and South America, then West,  Central and Southern Africa and gene bank of Maize Research Institute “Zemun  Polje” were used. Combining breeding approaches in selection of genetic  resources, field plot techniques and laboratory analysis, it was created  large number of early QPM varieties, inbred lines and hybrids with modified  endosperm and high yield potential under poor and good growing conditions.  Created lines exhibited high combining ability in conventional and  non-conventional hybrids. Yield trials showed that QPM hybrids are competing  with commercial hybrids of common maize

genetika

Role of genetic resources from different geographic and climatic regions in simultaneous breeding for high quality protein maize (HQPM) and stress tolerance