IMAZETHAPYR RESISTANCE FOUND IN THE MATERIAL OF THE MRI, ZEMUN POLJE, GENE BANK

Eleven total and broad spectrum herbicides were applied on the whole material of the Maize Re- search Institute (MRI) Gene Bank - Belgrade, in order to search for eventual rare mutants resistant to some of them. Only the resistance to the Pivot herbicide was obvi- ously found (active ingredient imazethapyr), and the genes controlling this trait were dominant. Few modes of inheritance were found for these genes (three comple- mentary dominant genes, two complementary dominant genes and one dominant gene). For practical purposes (incorporation in the non-resistant material), the source of one dominant gene is the most appropriate.