1. Chang T.T. 1967. Growth characteristics, lodging and grain devel-opment. Int. Rice Comm. Newsl. (Special issue) : 54–60.
2. Clewer A.G. and Scarisbrick D.H. 1990. An Introduction to the Principles of Crop Experimentation. Wye College (University of London), London. 1–93.
3. Gallagher J.N. and Biscoe P.V. 1978. Radiation absorption, growth and yield of cereals. J. Agrie. Sci. Camb. 91 : 47–60.
4. Gomez K.A. and Gomez A.A. 1984. Statistical Procedure for Agricultural Research. Second edition. John Wiley and Sons Inc., New York. 1–680.
5. Govinda R.K. and Siddiq E.A. 1986. Hybrid vigour in rice with reference to morphophysiological components of yield and root density. SABRAO J. 18 : 1–7.