The breeding objectives in the Root and Tuber Improvement Programme of the International Institute of Tropical Agriculture (IITA) were laid down. Basic considerations in cassava breeding were reviewed and discussed. The paper attempts to produce a cassava breeding system applicable on a world-wid...
Expose des objectifs du Programme de Selection et d'Amelioration des Plantes a Racine et a Tubercule a I'lnstitut International d'Agriculture Tropicale (IITA). Examen critique des problemes fondamentaux de la selection et de I'amelioration du manioc et tentative de formulation d'un systeme de sel...
Se establecieron los objetivos de hibridacion del Programa de Mejoramiemo de Raices y Tuberculos del Instituto de Agricultura Tropical (IITA). Se discutieron las consideraciones basicas del mejoramiento genthico en yuca. EI reporte intenta producir un sistema de hibridacion que sea aplicable sobr...
Hahn, S.K.
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Howland, A.K.
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Terry, Eugene R.
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[Cassava breeding at IITA: Conference Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 29 December, 1973]
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Cassava breeding at IITA: Conference Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 29 December, 1973
The constraint to the production of the root and tuber crops, cassava, yams and sweet potato in Nigeria and Africa were stated. Breeding methods most appropriate to these crops were discussed in terms of mating systems, creation of source populations, selection, and use of selections. Intervariet...
The sweet potato is one of the world’s most widely consumed crops, yet its evolutionary history is poorly understood. In this paper, we present a comprehensive phylogenetic study of all species closely related to the sweet potato and address several questions pertaining to the sweet potato that r...
Muñoz Rodriguez, P.
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Carruthers, T.
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Wood, J.R.I.
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Williams, B.R.M.
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Weitemier, K.
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Kronmiller, B.
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Ellis, D.
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Anglin, Noelle L.
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Longway, L.
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Harris, S.A.
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Rausher, M.D.
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Kelly, S.
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Liston, A.
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Scotland, R.W.
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[Reconciling conflicting phylogenies in the origin of sweet potato and dispersal to Polynesia]
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Reconciling conflicting phylogenies in the origin of sweet potato and dispersal to Polynesia
In a nematode survey of eight commonly grown root and tuber crops (cassava, sweet potato, potato, yam, tannia, taro, carrot and turmeric) from 430 fields in Uganda, 69 species of plant-parasitic nematodes representing 28 genera were extracted from soil and roots. About twice as many nematode spec...
Coyne, D.L.
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Talwana, H.
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Maslen, N.R.
,
[Plantparasitic nematodes associated with root and tuber crops in Uganda]
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Plantparasitic nematodes associated with root and tuber crops in Uganda
Both components of the virus complex that causes the sweet potato virus disease (SPVD) in Nigeria can individually be transmitted by their respective vectors from diseased sweet potato to healthy sweet potato and to the test plant, Ipomoea setosa. But in isolation, neither the aphid nor the white...
Orange-fleshed sweet potato (OFSP) can contribute to combating vitamin A deficiency and establishing more resilient cropping systems in sub-Saharan Africa. There is limited understanding of the factors that affect yield and quality of OFSP on smallholder farmers’ fields. This study aimed to asses...
Vugt, D. van
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Franke, A.C.
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[Exploring the yield gap of orange-fleshed sweet potato varieties on smallholder farmers' fields in Malawi.]
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Exploring the yield gap of orange-fleshed sweet potato varieties on smallholder farmers' fields in Malawi.
A study compared the spread of sweet potato virus disease (SPVD) into crops of two moderately resistant and initially SPVD-free sweet potato cultivars in northern and southern Mpigi, Uganda. Whiteflies, the vector of sweet potato chlorotic stunt crini virus (SPCSV), a component cause of SPVD, wer...
Aritua, Valentine
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Legg, J.P.
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Smit, N.E.
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Gibson, R.W.
,
[Effect of local inoculum on the spread of sweetpotato virus disease: limited infection of susceptible cultivars following widespread cultivation of a resistant sweetpotato cultivar]
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Effect of local inoculum on the spread of sweetpotato virus disease: limited infection of susceptible cultivars following widespread cultivation of a resistant sweetpotato cultivar
Theberge, R.L.
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Caveness, F.E.
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Herren, H.R.
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Lema, K.
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Neuenschwander, P.
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Yaninek, John S.
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[Common African pests and diseases of cassava, yam, sweet potato and cocoyam]
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Common African pests and diseases of cassava, yam, sweet potato and cocoyam
In this study we close the identified gaps in the existing literature and databases by documenting release and adoption of improved sweetpotato varieties in eight major sweetpotato producing countries in Southeast, South, and East Asia. Methodologically, this study adopts a refined expert elicita...
Gatto, M.
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Hareau, G.
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Pradel, W.
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Suarez, V.
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Qin, J.
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[Release and adoption of improved sweetpotato varieties in Southeast and South Asia]
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Release and adoption of improved sweetpotato varieties in Southeast and South Asia
A two‐day technical workshop was organized by the International Potato Center (CIP) and held in Nairobi in November 2018 to review SUSTAIN project study findings (to understand how commercialization of sweetpotato value chains affected the wellbeing of smallholder farmers) and develop recommendat...
Mudege, Netsayi N.
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Kebaara, K.
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Mukewa, E.
,
[Effects of commercialization of sweetpotato on gender relations and wellbeing among smallholder farmers: Technical workshop to review study findings and develop recommendations for improved programming.]
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Effects of commercialization of sweetpotato on gender relations and wellbeing among smallholder farmers: Technical workshop to review study findings and develop recommendations for improved programming.
