Chapter 1 - Sweetpotato genetic resources: today and tomorrow: Robert L. Jarret, USDA-ARS, USA; Noelle L. Anglin and David Ellis, International Potato Center, Peru; Arthur Villordon, Sweet Potato Research Station, USA; Phillip Wadl and Michael Jackson, USDA-ARS, USA; and Genoveva Rossel, International Potato Center, Peru ; 1 Introduction 2 Origin and dispersal 3 Archaeological data 4 General botany 5 Sweetpotato genebanks/germplasm collections 6 In vitro germplasm storage 7 Quality control 8 Management of sweetpotato CWR 9 Plant quarantine/phytosanitary issues/IPR 10 International treaties 11 Sweetpotato germplasm 12 NGS applications to sweetpotato and its CWR 13 Conclusion and future trends 14 Acknowledgement 15 Where to look for further information 16 References Chapter 2 - Developing new sweet potato varieties with improved performance: Peng Zhang, Weijuan Fan, Hongxia Wang, Yinliang Wu and Wenzhi Zhou, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, China; and Jun Yang, Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, China ; 1 Introduction 2 Genetic transformation of sweet potato from model cultivars to farmer-preferred cultivars 3 Production of disease-resistant sweet potato 4 Production of sweet potato resistant to abiotic stresses 5 Starch modification for industrial applications 6 Increased understanding of storage root development for better yield 7 Production of purple sweet potato with increased anthocyanin content 8 Conclusion and perspectives 9 Where to look for further information 10 Acknowledgements 11 References Chapter 3 - Improving the breeding, cultivation and use of sweetpotato in Africa: Putri Ernawati Abidin and Edward Carey, International Potato Center (CIP), Ghana ; 1 Introduction 2 Programmes for improving sweetpotato as a crop 3 Developments in breeding and seed dissemination 4 Improvements in cultivation and post-harvest handling 5 Nutritional quality and its improvement 6 Crop diversification for new uses 7 Case studies: Malawi 8 Case studies: Ghana 9 Conclusion and future trends 10 Where to look for further information 11 Acknowledgements 12 References.