1. Alagarswamy G 1977 Nitrogen uptake and transfer to the grain. In International Sorghum Workshop, Hyderabad. Proc. 6–13 March 1977, ICRISAT, Patancheru, A.P., 502 324, India.
2. Bhatia C R and Rabson R 1976 Bioenergetic consideration in cereal breeding for protein improvement. Science 194, 1418–1421.
3. ICRISAT (International Crops Research Institue for the Semi-Arid Tropics), 1981. Annual Report 1979–80. pp 28–29. Patancheru, A.P., 502 324, India.
4. Kramer T H 1979 Environmental and genetic variation for protein content in winter wheat (Triticum aestivum L.). Euphytica 28, 209–218.
5. Rao N G P and Venkateswarlu J 1974 Genetic analysis of some exotic x Indian crosses in sorghum. III. Heterosis in relation to dry matter production and nutrient uptake. Indian J. Genetics and PL Breed. 31, 156–176.