بررسي كنترل ژنتيكي مقاومت به پوسيدگي فوزاريومي بلال ذرت

A Study on Genetic Control of Maize Fusarium Ear Rot

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 KI26411 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.