New rice breeding materials which are adaptable to low-input conditions are developed from introduction of vigorous growth derived from an African wild rice, Oryza longistaminata Chev. et Roehr. Introduced QTLs of O. longistaminata in O. sativa L. are examined whether they show low-input adaptability in Kenyan fields. Additionally, trade-off relationships between these QTLs and other agronomic traits are also studied. Suitable conditions for the introduced QTLs are clarified by interaction analysis between genotypes, cultivation conditions, and cultivation techniques, then, the cultivation techniques which maximize the potential of cultivars even in low-input conditions for sustainable rice cultivation are revealed. The aim is to develop new breeding materials which has low-input adaptability and to establish a breeding strategy for Kenyan rice cultivation.