Citation: Gurdev S Khush, S.B. Peng and S.S. Virmani. 1998. Improving the yield potential by modifying plant type and exploiting heterosis. Pages 150-1701. In: J.C. Waterlow, D.G. Armstrong, L. Fowden and R. Riley (editors). Feeding a world population of more than a billion people: A challenge to science. Oxford University Press, New York.

Keywords: Oryza sativa, rice breeding, improved yield potential by modification of plant type, yield limited factors, related morphological traits, exploitation of heterosis, causes for higher yields in hybrids, adaptability of hybrids to stress environments, genetic basis of heterosis, extent of utilization of hybrids,