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Major research efforts have been directed towards the improvement of crop yields through breeding. In recent years, there has been a considerable increase in the amount of fundamental research being done on cereals and pulses crops. Crop breeders have been released considerable number of early-maturing, disease and insect resistance, wide adaptable and drought tolerance varieties for lowland, mid-altitude and highland areas of Ethiopia. Information on the magnitude of heritable crop improvementfatcat:m5laytt2fbaohekgq22xuw5tfm