... focusing on an elite super -hybrid (Liang-You-Pei-Jiu, LYP9 [20]) and its parental lines, using gene expression technology, http://www.biomedcentral.com/1471-2229/7/49 including EST and SAGE techniques ... sequence -based and hybridization -based methods; some have yielded interesting candidates and others proposed expression patterns of these candidates [5,9] For instance, a hybrid- specific expressed gene ... methylation tactic might be used in gene regulation in maize Among non-additively expressed genes, both over-dominant and under-dominant genes are rather abundant, supporting in part the over-dominance...