Section I Micropropagation, Virus-Free Plants, Haploid Production and Field Trials.- I.1 Biotechnology and 21st Century Potato.- 1. General Account.- 2. Traditional Methods of Potato Breeding.- 3. Biotechnology Produces Novel Potatoes.- 4. The Future Potato.- References.- I.2 In Vitro Propagation of Potato - Progress in Czechoslovakia.- 1. Introduction.- 2. Meristem Tip Culture.- 3. In Vitro Clonal Propagation.- References.- I.3 Virus-Free Potatoes Through Meristem Culture.- 1. Introduction.- 2. Virus Elimination.- 3. Indexing Source Plants.- 4. Heat Therapy.- 5. Culture Medium.- 6. Meristem Culture.- 7. Indexing Treated Plantlets.- 8. Elimination of PSTV.- 9. Indexing Field Plants.- 10. Summary.- References.- I.4 In Vitro Induction of Virus-Free Potatoes by Chemotherapy.- 1. Introduction.- 2. Meristem and Explant Culture of Potato in the Presence of Virazole.- 3. Discussion.- References.- I.5 In Vitro Improvement of Potatoes: The New Zealand Approach.- 1. Introduction.- 2. Biotechnological Approaches.- 3. Future Prospects of Biotechnology in Potatoes in New Zealand.- References.- I.6 In Vitro Production and Release of Potato Varieties in China.- 1. Introduction.- 2. Meristem-Tip Culture.- 3. Cold Storage of Shoot Tips and Plantlets.- 4. Large-Scale Propagation and Growing of the Virus-Free Plantlets.- 5. Varieties Released.- 6. Comparison of Growth and Production of Healthy and Infected Plants.- 7. Conclusions and Prospects.- References.- I.7 Field Performance of Micropropagated Potato Plants.- 1. Introduction.- 2. Growth and Production of Micropropagated Potatoes as Compared to Tuber-Generated Potatoes.- 3. Timing and Handling of Micropropagules.- 4. Conclusions.- References.- I.8 Anther Culture and Haploid Production in Potato.- 1. Introduction.- 2. Factors Influencing Anther Culture.- 3. Pollen Culture.- 4. Development of Pollen Grains to Plants.- 5. Utilization of Anther Culture Technique and Haploids.- References.- Section II Physiological, Biochemical and Nutlsh