-

Five maize inbred lines along with their half diallele combinations were evaluated in
a randomized complete block desiegn of four replications in 2000 in SPII experimental
field, Karaj. In each plot, 20 plants were inoculated artificially by spores of Fusarium
moniliforme. Disease severity in each ear was recorded at harvest. Diallele analysis as
well as MS GCA/MS SCA showed the importance of GCA and SCA for resistance to
ear rot. Inbred lines K18 and K1264/1 exhibited negative and positive GCA to the
disease, respectively. According to the results of SCA of lines, epistatic effects should
probably be important, in addition to additive and dominance effects in resistance to this
pathogen.