Abstract: Wheat is the staple food of the people of Pakistan grown on an area of about 8.4 million hectares annually (MINFAL 97-98). The wheat production is affected due to the varying degree of different biotic and abiotic stresses in the country. The success of a breeding programme aims at the development of high yielding wheat varieties which are developed by making recombinants for the traits of economic importance. Forty bread-wheat cross combinations were attempted during the year 1997-98 to determine the heterotic and heterobeltotic effects of the recombinants in Fl generation. The parental material also included local types from highland and dryland areas to utilize the useful diversity in the breeding programme. Maximum degree of heterosis (increase over mid parents) was manifested by the cross number 21 (C-273/WCB BO) for all the trails studied. The same cross-showed the maximum haterobeltosis (increase over better parents) for plant height, spike length, # of spikelets per spike and grain weight. Another cross (Local white/sannine) also showed the same effects for all the trials. There was a varying degree of heterosis in different crosses showing that different combinations can be exploited for the manifestation of heterosis and suggest the choice of selection of desirable parents for the development of better recombinants.