Development of superior cassava cultivars in Ghana by farmers and scientists: The process adopted, outcomes and contributions and changed roles of different stakeholders

摘要: A participatory breeding programme involving farmers in two Ghanaian communities and scientists from CRI (Ghana) NRI (UK) to develop superior cassava cultivars is described. Initial situation analyses of the indicated that increasing importance both as a food cash crop. Most utilised landraces cassava; modern varieties were scarcely mentioned. Seeds 16 half-sib families obtained crossing block Nigeria at International Institute Tropical Agriculture planted field each community. During seedling subsequent clonal generations, accessions selected either by or retained next generation. This selection process has identified 29 amongst 1350 original seedlings. Farmers relatively consistent their year selections corresponded with stated criteria. Official variety release requires additional multilocational inspection trials postharvest assays but otherwise seems harmonious approach; our early involvement may facilitate release, an important factor cost-effectiveness. stakeholder workshop confirmed need for improved markets surveys current potential have led processors. Adoption approach, taking on new roles decentralisation activities, implies concomitant transfer influence resources.