1. Ying J. , et al., Field Crops Res57, 85 (1998).
2. Sheehy J. E. , et al., ibid.59, 1 (1998).
3. Ladha J. K. , et al., ibid56, 41 (1998).
4. Sinclair T. R., Proceedings of the World Food Security and Crop Production Technologies for Tomorrow, Kyoto, Japan, 8–9 October 1998 (Japanese Society of Crop Science, Kyoto, 1999).
5. Weet-Pirng H., Ling-Yuan S., Chino-Hus K., Bot. Bull. Acad. Sin.27, 163 (1986).