'lbe rescue of immature embryos from wide crosses (Il) was one of the first applications of culture techniques in the cereals. Success with embryo culture has improved with increased knowledge of embryo development, differen tia tion pa ttems and nu tri tional and hormonal require men ts * lfowever, success in these procedures is still sporadic and often genotype or species specific. A review of embryo development is lacKing in recent literature on cereals. We shall first describe these processes, and follow this by a section on factors influencing embryo culture success. The rescue of...