Inheritance of Grain Yield in a Half-Diallel Maize Population

Authors : Aydın ÜNAY, Hüseyin BASAL, Cahit KONAK

Pages : 239-244

View : 20 | Download : 9

Publication Date : 2004-08-01

Article Type : Research Paper

Abstract :Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining ability effects were significantly different among parental lines. The grain yield was under the dominance gene effect. The parents W 552 and DNB were considered suitable according to their yield capacities and general combining ability effects. The midparent heterosis values ranged from 46.10% insert ignore into journalissuearticles values(H.96 x DNB); to 573.12% insert ignore into journalissuearticles values(ALKD 222 x A 632); whereas the useful heterosis values varied between -46.47% insert ignore into journalissuearticles values(A 619 x A 632); and 10.78% insert ignore into journalissuearticles values(N 7A x ALKD 90-1);, and only 9 crosses had higher grain yields than that of the check variety. Of these crosses, N 7A x ALKD 90-1, N 7A x DNB and N 7A x IDRN Cornell, were considered promising hybrids.
Keywords : Maize, diallel analysis, combining ability, heterotic effect