PRINOS ZRNA I ULJA DVOLINIJSKIH I TROLINIJSKIH OS HIBRIDA SUNCOKRETA

Sunflower breeding program at the Agricultural Institute Osijek is aimed at creating hybrids with high genetic potential for grain and oil yield and with improved agronomical traits. Achieved grain and oil yields of 30 new (single-cross and three-way cross) OS hybrids in comparison with standard hybrids (Apolon and Šokac), during 2006 and 2007 at location Osijek (Croatia) are presented in this paper. The experiments were set up in randomized complete block design (RCBD) and analyzed traits were grain and oil yield. The highest grain yield (for both years of the research) was achieved with hybrids OS-H-271 S and OS-H-35 T (above 5 t ha-1), and oil yield with hybrids OS-H-35 T, OS-H-K3 T and OS-H-271 S (above 2 t ha-1). On the average, three-way cross hybrids achieved higher grain and oil yield compared to single-cross hybrids. Experimental hybrids achieved higher grain and oil yield compared to registered OS sunflower hybrids, indicating a genetic advance in domestic sunflower hybrids breeding.Oplemenjivački rad na suncokretu u Poljoprivrednom institutu Osijek ima za cilj stvaranje hibrida suncokreta visokoga genetskoga potencijala za prinos zrna i ulja uz poboljšanje agronomskih svojstava. U ovome radu prezentirani su ostvareni prinosi zrna i ulja 30 novih (dvolinijski i trolinijski) OS hibrida suncokreta u usporedbi sa standardnim OS hibridima suncokreta (Apolon, Šokac) tijekom 2006. i 2007. godine na lokalitetu Osijek (Hrvatska). Pokusi su postavljeni prema slučajnome bloknome rasporedu, a analizirana su svojstva prinos zrna i prinos ulja. Najveće prinose zrna, za obje godine istraživanja, ostvarili su hibridi OS-H-271 S i OS-H-35 T (preko 5 t ha-1), a prinose ulja OS-H-35 T, OS-H-K3 T i OS-H-271 S (preko 2 t ha-1). U prosjeku, trolinijski hibridi ostvarili su veće prinose zrna i ulja u odnosu na dvolinijske hibride. Novi hibridi postigli su veće prinose zrna i ulja od standardnih OS hibrida suncokreta, što ukazuje na genetski napredak u oplemenjivanju domaćih hibrida suncokreta