1. Cermeño, M C, Orellana, J, Santos, J L, and Lacadena, J R. 1984. Nucleolar organizer activity in wheat, rye and derivatives analyzed by a silver-staining procedure. Chromosoma, 89, 370–376.
2. Chennaveeraiah, M S. 1960. Karyomorphological and cytotaxonomic studies in Aegilops. Acta Horti Ootoburgensis, 23, 85–178.
3. Giraldez, R, Cermeño, M C, and Orellana, J. 1979. Comparison of C-banding pattern in the chromosomes of inbred lines and open pollinated varieties of rye, Secale cereale L. Z Pflanzenzüchtg, 83, 40–48.
4. Hizume, M, Sato, S, and Tanajca, A. 1980. A highly reproducible method of nucleolus organizer regions staining in plants. Slain Technoi, 55, 87–90.
5. Howell, W M. 1982. Selective staining of nucleolus organizer regions (NORs). The Cell Nucleus, 11, 89–142.