Detection of Non-Additive Gene Action within Elite Maize Populations Evaluated in Contrasting Environments under Rainforest Ecology in Nigeria

Proper understanding of the mode gene action in open-pollinated varieties (OPVs) maize parents helps breeder choice appropriate breeding method to improve its genetic value. The objectives present study were determine controlling grain yield and other agronomic traits late maturing elite OPVs classify into heterotic groups. Ninety-one hybrids generated from 14 OPV using diallel mating design evaluated with their plus three commercial checks under marginal rainfall, drought, optimal environments Nigeria 2017 2018. experiment was laid out a 9 × 12 alpha lattice replications each environment. Results showed that there significant mean squares for most traits. Significant general combining ability (GCA) specific (SCA) some indicated additive non-additive actions important inheritance those among this set genotypes. However, effects more than all research environments. Only TZL Comp-3 C3 DT had positive GCA (0.336*) while SCA across Because preponderance over action, distinct groups could not be identified but four tester by HSGCA (Heterotic grouping based on Specific General Combining Ability) HGCAMT Multiple Traits). related endosperm colour pedigree varieties. In conclusion, has demonstrated measured presence studied materials can enhance identification outstanding varietal population testers serve as base future improvement through reciprocal recurrent selection program SSA.