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The study used partial diallel cross among ten triticale genotypes ( BEAGLE , ERONGA, FAHAD , POLLMER , LIRON , HUI/TUB , CENT/1715 , BW32-1 , SN64/EER , CMH80) and to evaluate the hybrids and estimates heterosis , and their general and specific combining ability. The studied characters were the followings ; number of days from planting to 75% flowering and maturity , spikes per square meter , plant height , number of grains/spike , weight of 1000 grains , grains yield , biological yield , protein content , ash content , gluten content and pelshenke test. F1 hybrids, F1 and parents differed significantly at 1% probability level for all studied characters. (BEAGLE×HUI/TUB) and (BEAGLE × BW32-1) and (ERONGA×BW32-1) and (ERONGA×SN64/EER) and (HUI/TUB × SN64/EER) and (FAHAD× CMH80) hybrids gave highest heterosis values calculated as deviation of F1 from the mid parents , and (BEAGLE × HUI /TUB) and (FAHAD×CMH80) hybrids gave highest heterosis values calculated as deviation of F1 from the best parent for most studied characters except for plant height , biological yield , ash content , dry gluten content and pelshenke test. General and specific combining ability mean squares differed significantly for most characters except for number of days to 75% flowering and number of tillers and spikes/plant , grain yield , biological yield and wet gluten content for general combining ability and spike length , number of grains/spike , grain weight of 1000 , ash content , dry gluten content and pelshenke test for specific general combining ability. Parents differed in their general combining ability effects and ERONGA genotype showed significant effects in desired direction for flowering and maturity , plant height and protein and ash content. [ABSTRACT FROM AUTHOR]