Potato and sweetpotato in Africa : transforming the value chains for food and nutrition security

Content: 1. Advances in sweetpotato breeding from 1992 to 2012 2. Breeding sweetpotato for yield and beta-carotene content in Burkina Faso 3.  Development of dual-purpose sweetpotato varieties through participatory   breeding in Rwanda 4. Development and evaluation of new sweetpotato varieties through farmer participatory breeding for high altitudes in Kenya 5. In vitro evaluation of orange-fleshed sweetpotato for drought tolerance using polyethylene glycol 6.   Ex-ante evaluation of improved potato varieties for sub-Saharan Africa 7. Durable cisgenic resistance to  phytophthora infestans in potato and perspectives for applications in Africa 8. Exhibition trial and farmer participatory selection of new late blight resistant b3c1 potato genotypes for adaptation to Nigerian conditions 9. Integrative breeding strategy for making climate smart potato varieties for sub-Saharan Africa 10. New elite potato clones with heat tolerance, late blight and virus resistance to address climate change 11. Strategies to improve poor seed potato quality and supply in sub-Saharan Africa:  experience from interventions in five countries 12. Public-private patnership supporting women driven potato seed multiplacation in the Lumwana catchment area N. West Zambia 13. Risk of uncontrolled importation of seed potato from Europe to East and Central Africa: What are the policy options? 14. Quality seed potato production: experiences from the highlands of Ethiopia 15. Possible pathway to commercial seed potato production in sub-Saharan African countries: Experiences of partnership synergy, successes, outcomes, challenges and prospects for a formal seed potato system in Uganda 16. Potato yield variation as affected by virus seed degeneration and growth conditions in Tunisia 17. Potato seed certification in Kenya, prospects, achievements and constraints 18. Adaptation and improvement of the seed-plot technique in smallholder potato production 19. Integration of in vitro techniques in informal seed production systems of potato in Africa 20. Comparison between fluorescent lamps and light-emitting diodes on in-vitro growth of potato micro-plants and subsequent in-vivo performance and mini-tuber production 21. An analysis of demand, supply and elasticities of seed potato in major producing areas in Nigeria 22. An alternative technology for pre basic potato seed production - sand hydroponic 23. Improving seed health and seed performance by positive selection in three Kenyan potato varieties 24. Up scaling the adoption of positive selection and seed plot techniques in seed potato systems in  Uganda  - UNSPPA's experience 25. Media and genotype effects on growth and mini tuber yield for potato (solanum tuberosum l.) Seed production in Malawi 26. Work of multiple organizations to improve seed potato health in U.S.A. and an example of change to reduce potato virus y in seed potato lots. 27. Research towards managing potato virus y infections in South Africa 28. Can small still be beautiful? Moving local sweetpotato seed systems to scale in sub-Saharan Africa. 29. Effect of long-term in-vitro sub-culturing on quality degeneration of sweet potato varieties: Morpho-anatomic assessment and simple sequence repeats (ssr) 30. The long dry season limits production of sweetpotato in Africa: Utilising and sourcing planting material in Bukedea and Soroti districts in Uganda 31. Evaluation and promotion of sustainable seed supply systems for vegetatively propagated crops in central and Eastern Kenya 32. Disease management, especially viruses in potato and sweetpotato 33. Ilcym - a generic platform for developing insect phenology models and conducting population analysis and mapping 34. Contemplating the emerging changes in the kenyan population of phytophthora infestans in the context of potato blight control 35. Root knot nematodes and soft rot enterobacteriaceae, two emerging problems of potatoes 36. Can mineral oil protect potato seeds against aphid transmission of pvy? 37. The farming systems of potential potato production areas of Chencha, Southern Ethiopia 38. Aphids infesting potato in Kenya 39. Maize  -  Orange-fleshed sweetpotato (OFSP) intercropping: potential for use to enhance food security and the scaling-up nutrition effort in Malawi 40. Effect of staking on flower induction, pollination and cross-compatibility among sweetpotato 41. Sweetpotato and garden egg intercrop compatibility studies in Umudike, Nigeria 42. Nutrient uptake and yield efficiency of exotic sweetpotato cultivars under organic soil management systems in Abeokuta Southwestern Nigeria 43. On the road to potato processing in African tropical highlands 44. Unlocking the potential of the potato subsector in Kenya- a road map for revitalizing the subsector 45. Diversity and characteristics of potato flakes in Nairobi and Nakuru, Kenya 46. Contract farming and production efficiency among potato farmers in Kenya: case of Bomet and Molo district 47. Improvement of processing technology research and utilization of sweetpotato and its derived foods 48. Building a sustainable sweetpotato value chain: Experience from Rwanda sweetpotato super foods project 49. Matching sweetpotato farmer typologies with various sweetpotato value chain development in West Africa 50. Vacuum frying processing technology improves quality attributes of fried sweet potato chips 51. Price integration of sweetpotato marketing: Implications for an efficient marketing system in Nigeria 52. Transaction costs and agricultural household supply response of sweetpotato farmers in Kwara state of Nigeria 53. Promotion of vitamin a enriched sweetpotato for production by small-scale commercial farmers in South Africa 54. Getting the equation right: engendering sweetpotato value chains in East Africa 55. Assessing nutritional value and changing behaviors regarding sweetpotato use in sub-Saharan Africa 56. Effect of sweet potato meal and composite sweet potato meal based diets on performance of weaner rabbits. 57. Determining availability of nutrients in sweet potato grown in the Kenyan highlands using in-vitro digestibility and in sacco degradability