Introduction. 1. Male Gametogenesis; Development and Structure of Sperm; D. Southworth, S.C. Russell. 2. Sperm and Generative Cell; Isolation and Manipulation; D. Southworth. 3. Pollen Germination and Pollen Tube Growth; Tip Growth Mechanism in Sexual Plant Reproduction; A. Moscatelli, M. Cresti. 4. Female Gametogenesis; Ontogenesis of the Embryo Sac and Female Gametes; S.D. Russell. 5. Embryo Sac; Isolation and Manipulation; D.D. Cass, J.D. Laurie. 6. In Vivo Fertilization; T.B. Batygina, V.E. Vasilyeva. 7. In Vitro Fertilization; E. Kranz. 8. Sexual Incompatibility; F. Cruz-Garcia, B.A. MacClure. 9. Zygotic Embryogenesis; Structural Aspects; R. Czapik, R. Izmailow. 10. Zygotic Embryogenesis; Hormonal Control of Embryo Development; B. Fischer-Iglesias, G. Neuhaus. 11. Zygotic Embryogenesis: Developmental Genetics; The Formation of an Embryo from a Fertilized Egg; K. Schrick, T. Laux. 12. Somatic Embryogenesis; T.A. Thorpe, C. Stasolla. 13. Synthetic Seeds of Asparagus officinalis L.; K. Mamiya, et al. 14. Endosperm Development; P.W. Becraft, et al. 15. Seed Maturation, Germination, and Dormancy; A.B. Downie. 16. Gametophytic Apomixis; A Successful Mutation of the Female Gametogenesis; Y. Savidan. 17. Parthenocarpy; State of the Art; A. Spena, G.L. Rotino. 18. Androgenesis in Brassica; A Model System to Study the Initiation of Plant Embryogenesis; J.B.M. Custers, et al. 19. Androgenesis in Cereals; S.K. Datta. 20. In Vitro Gynogenesis; S.S. Bhojwani, T.D. Thomas. 21. Inheritance of Cytoplasmic Traits &endash; Embryological Perspectives; T. Kuroiwa, et al. Subject Index.