Effect of S1 recurrent selection on the occurrence of stalk, ear and root rot (Fusarium graminearum) in the synthetic corn population NSB

Abstract

A study has been conducted to assess the effect of S1 recurrent selection on the occurrence of stalk, ear and root rot (Fusarium graminearum) in the synthetic corn population NSB. After five cycles of S1 recurrent selection, a significant increase was registered in the stalk resistance to the agent of stalk rot. The percentage of lodged plants was reduced from 57.7 to 41.6%. The largest reduction in the number of lodged plants occurred in cycle C5. In all selection cycles, lower percentages of plants infected by stalk rot occurred in the locations of Ada and Sombor, in conditions of natural infection, than in the locations Rimski Šančevi and Srbobran, in conditions of inoculation.

U radu je ispitivan uticaj S1 rekurentne selekcije na trulež stabla, klipa i korena Fusarium graminearum u sintetičkoj populaciji kukuruza NSB. Nakon pet ciklusa S1 rekurentne selekcije, došlo je do značajnog povećanja otpornosti stabla prema prouzrokovaču truleži Fusarium graminearum. Procenat poleglih biljaka je smanjen sa 57,7% na 41,6%. Najveće smanjenje procenta poleglih biljaka je utvrđeno u C5 ciklusu. Lokaliteti Ada i Sombor, u uslovima prirodne infekcije imali su manji procenat truleži stabla po ciklusima, nego lokaliteti Rimski Šančevi i Srbobran, u uslovima veštačke inokulacije.