Effect of F1, F2 generation and their mixture rates on grain yield and yield component in maize (Zea mays L.)

ABSTRACTMsc THESISEFFECT OF F1, F2 GENERATION AND THEIR MIXTURE RATESON GRAIN YIELD AND YIELD COMPONENT IN MAIZE (Zeamays L.)Serhan SOYD NÇCUKUROVA UNIVERSITY OF CUKUROVAINSTITUTE OF NATURAL AND APPLIED SCIENCEFIELD CROP DEPARTMENTSupervisor: Prof.Dr. Ahmet Can ÜLGERYear:2005,Page:Jury: Prof.Dr.Ahmet Can ÜLGERProf.Dr. Yusuf KIRTOKProf.Dr. Faruk EMEKS ZThis study conducted aiming to determine changes on grain yield andcomponents for F1, F2 generation and their different mixture rates (% 75 F1-% 25 F2,% 50 F1-% 50 F2, %25 F1-% 75 F2) at Cukurova condition. The research carried outin 2002-2003 growing season with commercial maize hybrid varieties, P.31G98,Rx.9292 and SELE. The experimental design was split plot. There were statisticallydifferences between maize varieties in point of days to tasseling, cob diameter, coblength, height of first cob, number of kernels per cob, grain weight per cob and grainyiled. There was significantly effect of different rate of mixture on grain yield. Thegrain yield was less both in F2 generation and in the different rate of mixture than F1.the grain yield were 1246 kg/da, 806 kg/da, 1153 kg/da, 1083 kg/da, 1039 kg/da forF1, F2 generation and % 75 F1-% 25 F2 , % 50 F1-% 50 F2, % 25 F1- % 75 F2respectively.The result showed that to obtaining highest grain yield hybrid varieties mustbeen used for maize.Key words; Maize, Grain Yield, F1, F2, Mixture, Mixture RateII