6KhushGS. Prospects of and approaches to increasing the genetic yield potential of rice. In: Evenson R E. Rice Research in Asia,Progress and Priorities. Manila: CAB International and IRRI,1996. 59-71.
7Donald C M.The breeding for crop ideotypes.Euphytica,1968,17:385-403.
8Ramasary S. Effects of nitrogen application at heading and root activity on the grain yield of rice. SARP Research Proceedings.Manila Philippines: IRRI,1995.43-53.
