The 2 insects pests, stem borers (Busseola busca) and maize weevil (sitophilus zeamais) are very destructive grain pests, hard to control, and cause huge economic losses. The aim of this study was to determine the mechanisms of stem borer resistance in selected weevil resistant inbred lines and determine their combining ability as well as the correlation between stem borer resistance and weevil resistance. The research was conducted at National Crop Resources Research Institute's (NaCRRI) main station in Namulonge, central Uganda. The genetic material used include 4 inbred lines resistant to...