Tolerance PKB corn hybrids for drought in 2012 year

U radu je analiziran prinos zrna kukuruza komercijalnih hibrida stvorenih u Institutu PKB Agroekonomik. Ispitivani hibridi kukuruza pripadaju različitim grupama zrenja od FAO 200 do FAO 700. Hibridi kukuruza testirani su kroz mrežu makrodemonstracionih ogleda na osam lokaliteta. U uslovima izuzetno sušnog perioda praćenog visokim temperaturama vazduha, kakvi su bili uslovi tokom 2012. godine, hibridi kukuruza Instituta PKB Agroekonimik iskazali su visok stepen tolerantnosti na stresni faktor suše na nekoliko lokaliteta u uslovima proizvodnje bez navodnjavanja. Domaći hibridi stvoreni su klasičnim metodama selekcije u dugotrajnom višegodišnjem testiranju na stresne faktore. Rezultati ostvareni na pojedinim lokalitetima opravdavaju pravac selekcije u cilju očuvanja genetičkog biodiverziteta i njegovog korišćenja kroz stvorene hibride u uslovima izuzetno otežanim za proizvodnju kukuruza. Pravilan izbor hibrida za proizvodnju u određenom rejonu predstavlja 50% dobrog preduslova za ostvarivanje maksimalnih prinosa dok ostalih 50% pripada pravilno izvedenim i blagovremeno primenjenim agrotehničkim merama.In this paper, the grain yield of maize commercial hybrids developed at the Institute PKB Agroekonomik. The tested hybrids from different maturity groups from FAO 200 to FAO 700th. Hybrids have been tested through a network makrodemonstracionih reflected in eight locations. In conditions of extremely dry periods followed by high air temperatures, what conditions were like in 2012. year, hybrids PKB Agroekonimik expressed a high degree of tolerance to drought stress factor at several sites in terms of production without irrigation. Domestic hybrids were created classical breeding methods in long-term multi-year test to stress factors. Results achieved in some localities justify route selection to preserve genetic biodiversity and its use in hybrids in extremely difficult conditions for maize production. Proper selection of hybrids for the production of a certain area represents 50% of good preconditions for achieving maximum yields, while the other 50% is done properly and timely cultural operations used