Resumen

RIVAS P., Rudy  y  BARRIGA B., Patricio. Combining ability for grain yield and malting quality traits in barley (Hordeum vulgare L.). Agric. Téc. [online]. 2002, vol.62, n.3, pp.347-356. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072002000300001.

Six spring barley (Hordeum vulgare L.) genotypes were crossed in a diallel system to study combining ability for grain yield and twelve malting quality traits. The F₁ hybrids behavior was analyzed using Griffing’s Model I, method 2. The analysis for general combining ability (CCG), specific combining ability (CCE) and the relationship CCG/CCE showed that expression of eight out of the thirteen traits were associated with genes which were additive in their effects: grain weight, malt extract, viscosity, friability, malt protein, soluble protein, Kolbach index and free amino nitrogen (FAN). On the other hand, the expression of grain plumpness, extract difference and the Hartong index showed both additive and non-additive genetic control, the former being of greater magnitude. Only grain yield and diastatic power had mainly non-additive control, even though additive effects were also present.

Palabras clave : combining ability; malting quality.