Abstract
The F1 hybrids along with the parents were evaluated in field to Genetic analysis for yield and yield contributing characters in maize (Zea mays L.) at Dezful Research Station in Safi Abad, in 2011 using RCBD with three replications. Results analysis of variance showed that variations among genotypes were highly significant for all the traits studied. Based on diallel cross analysis according to Griffing method 2, the results indicated significant differences among the parents for general combining ability (GCA) and crosses for specific combining ability (SCA) for all the characters studied and so in the inheritance of all the parameters, additive and non additive gene action are important. Based on GCA effects and per se performance for each parent, SD\3 and SD\17 line was suitable resources to increase grain yield. Therefore these inbred line probably have potential as parents of hybrid varieties, as well as for inclusion in breeding programmes, since they may contribute superior alleles in new populations for high grain yield. Furthermore, SD\3×SD\17 proved to be the best cross to increase grain yield. These best parents and cross combinations could be effectively utilized in maize breeding for the improvement of yield components and thus their incorporation in further breeding program is suggested.
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