1. Graham, J. S. D., Morton, R. K. and Raison, J. K., The in vivo uptake and incorporation of radioisotopes into proteins of wheat endosperm. Australian J. Biol. Sci.17, 102–114 (1964).
2. Kasugai, S., The studies on water culture methods. J. Sci. Soil and Manure, Japan13, 669–705 (1939).
3. Matsushita, A., The variation of the free amino acid contents in rice plant during the ripening period. J. Japanese Food Nutr.16, 220–223 (1963).
4. Matsushita, A., The variation of the free amino acid contents in eggplant and lichis in their growing period. J. Japanese Food Nutr.16, 224–228 (1963).
5. Mathur, S. N. and Sharma, R. A., Effect of uracil and 5-nitrouracil on growth and flowering of tomato. Physiol. Plantarum21, 911–917 (1968).