DIALLEL ANALYSIS FOR QUANTITATIVE TRAITS IN MACRONI WHEAT

The work entitled ¿Diallel analysis for quantitative traits in durum wheat (Triticum durum Desf.)¿ was undertaken for together the information on magnitude of heterosis over mid-parent, better parent and standard check (HI8498), combining ability, genetic components involved in expression of yield and its contributing characters.. The data were analysed subjected to heterosis and combining ability analysis (Method-2, Model-1 of Griffing, 1956a).On the basis of all genetic parameters, the cross combinations, RD1151 x DBPY04-4 and MPO1215 x DBPY04-4 were identified as promising. They expressed the highest per se performance, heterosis and specific combining ability effects. These combinations involved one good general combining parent. Another cross HI8498 x DBP08-25 was found promising as, it was superior with respect to per se performance, high heterosis and specific combining ability and one of the parent being a good general combiner. These three crosses found potential to generate desirable segregants for selection of better genotypes.