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A review of varietal change in roots,tubers and bananas: consumer preferences and other drivers of adoption and implications for breeding |
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| Authors: | Graham Thiele Dominique Dufour Philippe Vernier Robert O M Mwanga Monica L Parker Elmar Schulte Geldermann Béla Teeken Tesfamicheal Wossen Elisabetta Gotor Enoch Kikulwe Hale Tufan Sophie Sinelle Amani Michel Kouakou Michael Friedmann Vivian Polar Clair Hershey |
| Affiliation: | 1. CGIAR Research Program on Roots, Tubers and Bananas (RTB), led by CIP, Av. La Molina 1895, La Molina, Lima, Peru;2. Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Avenue Agropolis, 34398 Montpellier Cedex 5, Montpellier, France;3. International Potato Center (CIP), Plot 14, Ntinda II Road, PO Box 22274, Kampala, Uganda;4. International Potato Center (CIP), PO Box 30709, Nairobi, 00100 Kenya;5. Former scientist of International Potato Center (CIP), University of Applied Sciences Bingen, Berlinstrasse 109, 55411 Bingen am Rhein, Germany;6. International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Rd, Ibadan, Nigeria;7. International Institute of Tropical Agriculture (IITA), c/o ILRI, PO Box, 30709-00100 Nairobi, Kenya;8. Alliance Bioversity International and International Center for Tropical Agriculture (CIAT), Rome, Italy;9. Alliance Bioversity International and International Center for Tropical Agriculture (CIAT), P.O. Box 24384, Plot 106, Katalima Road, Naguru, Kampala, Uganda;10. Department of Global Development, B75 Mann Library, Cornell University, Ithaca, NY, 14853 USA;11. Specialized in Crop Production and Seeds, Syngenta Foundation for Sustainable Agriculture 1 esplanade Jean Sauvage, 49 130, Les Ponts De Ce, France;12. Station de Recherche sur les Cultures Vivrières (SRCV) CNRA, 01 BP 633 Bouaké 01, Côte d'Ivoire;13. International Consultant, Flinton, PA, USA |
| Abstract: | This review of the literature on varietal change in sub-Saharan Africa looks in detail at adoption of new varieties of bananas in Uganda, cassava in Nigeria, potato in Kenya, sweetpotato in Uganda and yams in Côte d’Ivoire. The review explored three hypotheses about drivers of varietal change. There was a strong confirmation for the hypothesis that insufficient priority given to consumer-preferred traits by breeding programmes contributes to the limited uptake of modern varieties (MVs) and low varietal turnover. Lack of evidence meant the second hypothesis of insufficient attention to understanding and responding to gender differences in consumer preferences for quality and post-harvest traits was unresolved. The evidence on the third hypothesis about the informal seed system contributing to slow uptake of MVs was mixed. In some cases, the informal system has contributed to rapid uptake of MVs, but often it appears to be a barrier with inconsistent varietal naming a major challenge. |
| Keywords: | Banana cassava consumer preferences plant breeding potato root and tuber crops sweetpotato varietal adoption yam |
