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Most commercial super sweet corn lines focus on simple hybrids. Information about the general combining ability (GCA) and about the specific combining ability (SCA) are relevant for hybrid development. The aim of the present study is to estimate the general and specific combining ability effects associated with yield and quality traits of super sweet corn. Nine lines (Flint) and ten lines (Dent) were crossed in a partial diallel fashion to produce 90 F1 hybrids. The hybrids and ten checks were assessed through the duplicate simple lattice design, with four repetitions, in two environments of Rio de Janeiro State, during the 2015 season. Data of six agronomic traits associated with yield, and five traits associated with quality were recorded. The results showed that GCA and SCA were significant (P ≤0.01) for almost all herein studied traits. The relative magnitude of GCA and SCA mean squares indicated the prevalence of additive effects for the quality traits, as well as non-additive effects for yield traits. The GCA and SCA (P≤0.01) interactions showed different genotype responses to the different environments. The "Flint" L1 inbred line presented the highest concentration of alleles favoring the increment for most of the traits. This line was the most suitable for the formation of new supersweet hybrids. Three crosses (L8 x L18, L1 x L13 and L6 x L15) showed desirable SCA effects for almost all traits. These crosses are valuable and could be used in corn breeding programs in order to achieve high yielding and quality combinations.

Combining ability for traits associated with yield and quality in super sweet corn (Zea mays L. saccharata)