| Preface |
| Aknowledgements |
| Opening Sessions |
| Opening Remarks [pdf 16Kb] |
| Opening Speech [pdf 23Kb] |
| Keynote Addresses |
1 |
Root and tuber crops and economic growth: The case of sub-Saharan Africa. [pdf 35Kb]
P. Hartmann |
|
8 |
Trends in the potato and sweetpotato sectors in sub-Saharan Africa and their contribution to the Millennium Development Goals.
Crissman C., Anderson P., Keith Fuglie, Kapinga R., Berga Lemaga, Andre Devaux, Graham Thiele, Sarath Ilangantileke and Coen Bussink |
|
20 |
Tropical root crops: Opportunities for poverty alleviation through sustainable development. [pdf 33Kb]
Satish Chandra |
|
Part 1
Plant Breeding and Biotechnology |
| 27 |
Selection of sweetpotato with high protein and/or low trypsin inhibitor activity [pdf 33Kb]
Toyama J., Yoshimoto M. and Yamakawa O. |
Abstract |
| 32 |
In-vitro plant regeneration via somatic embryogenesis and multiple shoot production in an elite ginger cultivar [pdf 28Kb]
Tarafdar J., Basu A., Nayak P. and Sen S.K. |
Abstract |
| 36 |
Review of cassava variety development for specific characteristics in Malaysia.
Tan S.L. |
|
| 45 |
Towards identifying the full set of genes involved in post-harvest physiological deterioration in cassava. [pdf 50Kb]
Reilly K., Diego Cortés, Rocío Gómez-Vásquez, Tohme J., Beeching J. |
Abstract |
| 51 |
Yam production in Ghana: To stake or not to stake - A plant breeding perspective. [pdf 35Kb]
Otoo E., Ennin S.A. and Ekpe E.O. |
Abstract |
| 56 |
Production of amylose-free sweetpotato plants by RNAi. [pdf 26Kb]
Otani M., Hamada T. and Shimada T. |
Abstract |
| 60 |
Breeding efforts to develop high-yielding, multiple pest-resistant sweetpotato germplasm in Uganda. [pdf 109Kb]
Mwanga R.O.M., Niringiye C., Lemaga B., Kapinga R., Yencho G.C. and Odongo B.
|
|
| 72 |
Advances in yam (Dioscorea spp.) genetics and genomics. [pdf 49Kb]
Mignouna H.D., Abang and Asiedu R. |
Abstract |
| 82 |
Sweetpotato crop improvement in sub-Saharan Africa and future challenges. [pdf 54Kb]
Kapinga R., Zhang D., Lemaga B., Andrade M., Mwanga R., Laurie S., Ndoho P. and Kanju E. |
|
| 95 |
Breeding cassava for brown streak resistance: Regional cassava variety development strategy based on farmer and consumer preferences. [pdf 37Kb]
Kanju E.E., Masumba E.,Masawe M., Tollano S., Muli, B., Zacarias, A., Mahungu N., Khizzah B., Whyte J. and Dixon A.
|
Abstract |
| 102 |
The use of doubled-haploids in cassava breeding [pdf 35Kb]
Hernán Ceballos, Martin Fregene and Juan Carlos Pérez |
Abstract |
| 109 |
Molecular markers as a tool for participatory cassava breeding. [pdf 94Kb]
Gullberg U., Mkumbira J., Chiwona-Karltun L. and Lagercrantz U. |
Abstract |
| 124 |
Development of virus resistant sweetpotato using biotechnological approaches in Kenya. [pdf 28Kb]
Gichuki S.T., Nangayo F., Machuka J., Njagi I., Macharia C., Odhiambo B., Irungu J and Ndolo P.J. |
Abstract |
| 129 |
Assessment of genetic diversity, farmer participatory breeding, and sustainable conservation of Eastern African sweetpotato. [pdf 36Kb]
Gichuki S.T., Kapinga R., Villordon A., Kulembeka H., Jeremiah S.C. and Ndolo P.J. |
Abstract |
| 136 |
Development of a web-accessible GIS database of sweetpotato germplasm for East Africa. [pdf 266Kb]
Gichuki S., Mwanga R., LaBonte D., Burg K., Zhang D. and Villordon A. |
Abstract |
| 139 |
Farmer to farmer cassava varietal selection and breeding: The Domasi experience. [pdf 28Kb]
Chilimba V.H., Katundu C., Chiphungu F., Mkumbira J., Jiggins J. and Chiwona-Karltun L. |
Abstract |
| 144 |
Genotype by environment interaction (GXE) for native cassava (Manihot esculenta Crantz) starch quality and its use in the commercial sector. [pdf 64Kb]
Benesi I.R.M., Labuschagne M.T., Dixon A.G.O and Mahungu N.M. |
Abstract |
| 158 |
The status of sweetpotato improvement and promotion in Nigeria. [pdf 26Kb]
Akoroda M.O., Edebiri, Egeonu I.N., Bello Z.A. and Yahaya K.M. |
Abstract |
| Agronomy |
| 162 |
Nitrogen fertilizer application timing in ‘beauregard’ sweetpotato. [pdf 22Kb]
Villordon A. and Franklin. J. |
Abstract |
| 165 |
Correlation study on population dynamics of ginger soft rot inciting pathogens under different organic amendments, disease incidence and its survival in Darjeeling hill soils. [pdf 33Kb]
Tarafdar J. and Saha N. |
Abstract |
| 170 |
Crop response of swamp taro to organic sources of nitrogen in lower Gangetic plains. [pdf 34Kb]
Sen H., Mukherjee P. and Mukherjee A. |
Abstract |
| 177 |
Effect of altitude and plant age on cyanogenic potential, dry matter, starch and sugar content in cassava genotypes. [pdf 47Kb]
Ntawuruhunga P., Whyte J.B.A. and Rubaihayo P. |
Abstract |
| 186 |
Production potential of root and tubers in association with plantation crops.[pdf 50Kb]
Nayar T.V.R. and Suja G. |
Abstract |
| 195 |
Evaluation agronomique et économique du système de production améliorée des semenceaux d’igname à partir des minifragments au Centre Bénin. [pdf 40Kb]
Maliki R., Dossou R., Amadji F. and Adje I. |
Abstract |
| 210 |
Plant water relations and photosynthetic properties of polyploid cassava grown in the Nigerian savannah. [pdf 40Kb]
Indira Ekanayake J., Dixon A.G.O., Kasele I.N. and Noah A.N.D. |
Abstract |
| 218 |
Improving productivity and household incomes of resource-poor farmers: the case of cassava-cowpea intercrop. [pdf 50Kb]
Harrison K.D., Ennin S.A., Asafu-Agyei J.N. and Anchirinah V.M. |
Abstract |
| 227 |
Land preparation for increased sweetpotato production in Ghana. [pdf 35Kb]
Ennin S.A., Dapaah H.K. and Asafu-Agyei J.N.
|
Abstract |
| 233 |
Effect of shade and intercropping in the management of sweetpotato virus disease in Uganda. [pdf 32Kb]
Byamukama E., Gibson R.W., Mpembe I., Kayongo J. and Mwanga R.O.M. |
Abstract |
| 240 |
Soil nutrient and cassava yield variations under continuous cultivation of three-crop mixtures in Eastern Nigeria. [pdf 40Kb]
Asadu C.L.A. and Dixon A.G.O. |
Abstract |
| 248 |
Time of harvesting and its effect on the quality of flour from four cassava varieties. [pdf 56Kb]
Apea Bah F.B., Oduro I., Ellis W.O. and Safo-Kantanka O. |
Abstract |
| Plant Protection |
| 264 |
Implication of variation in aggressiveness of Phytophthora infestans (Mont.) de Bary isolates found in Kenya to potato production. [pdf 43Kb]
Wakahiu M.W., Kedera J.C., Lung’aho C. and Olanya M. |
Abstract |
| 272 |
Morphological and biochemical characteristics of promising Indian sweetpotato cultivars and identification of virus infecting sweetpotato in India. [pdf 57Kb]
Tarafdar J., Mandal S., Sinha B., Puste A.M., Sahu P.K. and Sen H. |
Abstract |
| 284 |
Screening of cocoyam (Xanthosoma Sagittifolium (L) Schott) for disease resistance under two contrasting environments. [pdf 269Kb]
Safo- Kantanka O. and Adofo K. |
Abstract |
| 292 |
Control of sweetpotato virus disease through Farmer Field Schools approach in Kagera region, Tanzania. [pdf 33Kb]
Rwegasira G.M., Marandu E.F., Gibson R.W. and Kapinga R.E. |
Abstract |
| 298 |
Towards the control of a severe form of cassava mosaic disease in Nigeria: diagnostic survey for cassava mosaic begomoviruses. [pdf 371Kb]
Ogbe F.O., Dixon A.G.O. and Hughes J. |
Abstract |
| 307 |
Characteristics and control of a new basidiomycetous root rot of cassava (Mannihot esculents) in Ghana. [pdf 29Kb]
Moses E., Akrofi S. and Mensah G.A. |
Abstract |
| 312 |
Reprise des recherches sur le manioc au Congo suite a la pandemic de la mosaique africiane de manioc. [pdf 32Kb]
Mabanza J., Mbemba Makiza A., Ntawuruhunga P. et Legg J.P. |
Abstract |
| 318 |
Virus diseases of root crops in Africa: An overview. [pdf 66Kb]
Legg J.P., Gibson R.W. and d’A. Hughes J. |
Abstract |
| 332 |
Improving the health of Dioscorea yams.
Kenyon L. |
|
| 341 |
Screening of local cassava varieties against cassava mosaic disease and cassava green mite. [pdf 23Kb]
Jeremiah S.C. and Kulembeka H.P. |
Abstract |
| 345 |
Effect of co-formulated fungicides on late blight management in seed and ware potatoes. [pdf 44Kb]
Fontem D.A., Nana S.F., Njualem D.K. and Demo P. |
Abstract |
| 355 |
Evaluation of orange-fleshed sweetpotatoes varieties for resistance to sweetpotato virus disease. [pdf 29Kb]
Byamukama E., Gibson R.W., Mpembe I., Kayongo J., Mwanga R.O.W. |
Abstract |
| 359 |
La menace de la pandemie de la mosaique du manioc sur la production et ses consequences au Burundi.
Bigirimana S. et Legg J.P. |
|
| 365 |
Characterization and variability of sweetpotato virus Y, a hitherto unrecognized potyvirus infecting sweetpotato in Southern Africa.
Ateka E.M., Barg E., Njeru R.W.and Vetten H.J. |
Abstract |
| 373 |
Distribution of cassava mosaic begomoviruses in Nigeria.
Ariyo O.A., Dixon A.G.O., Atiri G.I. and Winter S. |
|
| 380 |
Genome organization and molecular variability in Sweetpotato chlorotic fleck virus.
Aritua V., Barg E., Adipala E. and Vetten H.J. |
Abstract |
| PART 2
Table of Contents
Post Harvest and Marketing |
| 397 |
Potential chemopreventive properties of caffeoylquinic acid derivatives from sweetpotato (Ipomoea batatas L.) leaves.
Yoshimoto M., Kurata R., Okuno S., Ishiguro K., and Yamakawa O. |
Abstract |
| 408 |
Requirements and characteristics of potato varieties in the Kenyan potato processing agricultural subsector.
Walingo A.M., Lung’aho C. and Kabira J.N. |
Abstract |
| 417 |
Probiotic and prebiotic properties of lactic acid bacteria isolated from cassava fermentations.
Varnam A. and Awamaria B. |
Abstract |
| 423 |
The potential for storage of fresh sweetpotato under tropical conditions: Evaluation of physiological changes and quality aspects.
Van Oirschot Q., Ngendello T., Rwiza E., Amour R., Tomlins K., Rees D. and Westby A. |
Abstract |
| 435 |
Application of consumer preference and sensory evaluation to sweetpotato research in East Africa.
Tomlins K.I., Van Oirschot Q.E.A., Rwiza E., Amour R., Ngendello T., Kapinga R., Rees D. and Westby A. |
Abstract |
| 445 |
Heap fermentation of cassava (Manihot Esculenta Crantz) in Nampula province, Mozambique.
Tivana L.D., Bvochora J., Mutukumira A. N., Owens J. D. and Zvauya R. |
Abstract |
| 451 |
Effect of cassava (Manihot esculenta) root meal supplemented with Nile Perch fish waste (Lates niloticus) on the rumen environment.
Shem M.N., Katakweba A.A.S., Aboud A.A.O., Sarwatt S.V., Lekule F.P. and Mutayoba S. |
Abstract |
| 460 |
Influence of the initial moisture contents on the functional and sensory qualities of dried fufu.
Sanni L.O. and Ajakaye F.I. |
Abstract |
| 466 |
Production of instant cassava noodles.
Sanni L.O., Bamgbose C.A., Babajide J.M. and Sanni S.A. |
Abstract |
| 473 |
Minimal processing of yam to increase consumers’ acceptance.
Oduro I., Ellis W.O., Asamoah-Okyere D.K., Adu-Amankwa P., Alemawor F. and Amagloh F.K. |
Abstract |
| 478 |
On-farm trials on long-term storage of sweetpotato at Gezaulole village, Kigamboni, Tanzania.
Ndunguru G.T., Tomlins K.I., Kimenya F.L. and Westby A. |
Abstract |
| 482 |
The role of sweetpotato root and starch characteristics on thermally processed products.
Namutebi A.S., Hill S.E., Farhat I.A. and Mitchell J.R. |
Abstract |
| 489 |
Effect of emulsifiers on sensory acceptability of cassava flakes.
Muzanila Y.C., Brennan J.G., King R.D. and MacDougall D.B. |
Abstract |
| 494 |
Assessment of cassava commercialisation and the effect of feeding cassava on the performance of chickens.
Mutayoba S.K., Lekule F.P., Shem M.N., Laswai G.H., Sarwatt S.V., Malole J.L. and Michael S. |
Abstract |
| 500 |
Effect of different storage methods on the shelf life of fresh sweetpotatoes in Gairo, Tanzania.
Mpagalile J.J., Silayo V.C.K., Laswai H.S. and Ballegu W.R. |
Abstract |
| 506 |
A review of post-harvest activities for cassava in Tanzania.
Mlingi N.V. and Ndunguru G.T. |
Abstract |
| 514 |
Nutritional evaluation of composite flour based on root and tuber crops and sensory acceptability of the developed products.
Lyimo M.E., Gimbi D.M. and Shayo N.B. |
Abstract |
| 521 |
Nutritive value of fresh cassava tubers, cassava root meal and cassava chips for growing - finishing pigs.
Lekule F.P., Shem M.N., Laswai G.H., Mutayoba S.K., Sarwatt S.V., Mtenga L.A. and Malole J.L. |
Abstract |
| 530 |
Improvement and popularization of diversified cassava products for income generation and food security: A case study of Kibabu.
Laswai H.S., Silayo V.C.K., Mpagalile J.J., Balegu W.R. and John J. |
Abstract |
| 536 |
A new sweetpotato cultivar, “quick sweet” has an altered starch structure and low gelatinization temperature.
Katayama K., Tamiya S., Kuranouchi T., Komaki K. and Nakatani M. |
Abstract |
| 540 |
Substitution of hominy meal with cassava root meal as a source of energy for growing dairy heifers.
Katakweba A.A.S., Shem M.N., Aboud A.A.O., Sarwatt S.V., Lekule F.P. and Mutayoba S. |
Abstract |
| 550 |
Nutrition and utilization of a new sweetpotato cultivar for tops.
Ishiguro K., Toyama J. and Yoshimoto M. |
Abstract |
| 554 |
On-farm pre-treatment of yam tubers to extend shelf life.
Ellis W.O., Oduro I., Akomeah-Adjei F. and Amagloh F.K. |
Abstract |
| 559 |
Pasta production: Another under-exploited way of increasing cassava utilization.
Ballegu W.R.W., Laswai H.S., Mpagalile J.J., Silayo V.C.K. and Mansour H. |
Abstract |
| 568 |
Use of fluorescent in-situ hybridisation to investigate possible involvement of Clostridium spp. during softening and fermentation of cassava.
Awamaria B. and Varnam A.H. |
Abstract |
| Socio-economics |
| 585 |
Participatory approach in the development of technologies to control erosion for sustainable cassava production in Thailand.
Watananonta W., Vongkasem W., Klakhaeng K. and Howeler R. |
Abstract |
| 593 |
Determinants of farmers’ adoption of improved cassava and sweetpotato varieties in Sierra Leone.
Sandy Margao C., Fornah D.S. and Barrie I.S. |
Abstract |
| 601 |
Rural household expenditures for roots and tubers in South Western Nigeria: An almost ideal demand system analysis.
Manyong V.M., Bamire A.S. and Zuckerman P.S. |
Abstract |
| 614 |
Cassava in Tanzania: A famine or commercial reserve?
Lazaro E.A., Lisasi H. and Assenga A. |
Abstract |
| 622 |
Farmers’ participatory perspectives on sweetpotato cultivars in Makueni district of Kenya.
Githunguri, C.M. and Migwa, Y.N. |
Abstract |
| 627 |
Challenges, opportunities, and strategy for cassava sub sector development in Nigeria.
Ezedinma C.I., Kormawa P.M., Manyong V.M. and Dixon A.G.O. |
Abstract |
| 641 |
Determinants of the adoption of improved cassava varieties in Southern Ghana - logistic regression analysis.
Dankyi A.A. and Adjekum A.A. |
Abstract |
| 648 |
Nutritional potential of the under-utilized indigenous root tuber Nymphaea petersiana in Malawi.
Chawanje C.M., Barbeau W.E. and Grun I. |
Abstract |
| 656 |
Seed yam marketing in Nigeria: Determinants and constraints.
Asumugha G.N., Ugwu B.O., Aniedu O.C. and Orkwor G.C. |
Abstract |
| Technology Transfer |
| 672 |
Participatory evaluation and improvement of cassava and sweetpotato processing machines for the Eastern zone of Tanzania.
Silayo V.C.K., Balegu W.R., Mpagalile J.J. and Laswai H.S. |
Abstract |
| 682 |
Successful restoration of cassava production in Western Kenya.
Obiero H.M., Whyte J.A.B., Legg J.P., Akhwale M.S., Malinga J. and Magut T. |
Abstract |
| 686 |
The role of community based organisations, NGOs and farmers in technology transfer.
Jeremiah S.C., Kulembeka H.P., Kanju E., Chirimi B. and.Amour R. |
Abstract |
| 689 |
Development and promotion of orange-fleshed sweetpotato varieties in Western Kenya.
Ndolo P.J., Nungo R.A., Kapinga R.E. and Agili S. |
Abstract |
| 696 |
Farmers decide: A participatory approach to the development and dissemination of improved cassava technologies that increase yields and prevent soil degradation.
Howeler R.H., Watananonta W. and Ngoan T.N. |
Abstract |
| Mini-Symposium: Vitamin A for Africa (VITAA) |
| 711 |
Vitamin A for Africa (VITAA): An entry point for promoting orange-fleshed sweetpotato to combat Vitamin A-deficiency in sub-Saharan Africa.
Anderson P., Kapinga R., Zhang D., Hermann M. |
Abstract |
| 721 |
The effect of orange fleshed sweetpotato on vitamin A and nutritional status of pre- school children in Nambale division Busia district.
Akelola R., Karuri E., Muroki N M. and Mwaniki D. |
Abstract |
| 728 |
Summary of progress on orange-fleshed sweetpotato research and development in Ethiopia.
Assefa Tofu,Teshome Anshebo, Engida Tsegaye and Tesfaye |
Abstract |
| 732 |
Evaluation and promotion of orange fleshed sweetpotato to alleviate Vitamin A deficiency in Orissa and Eastern Uttar Pradesh of India.
Attaluri S. and Ilangantileke S. |
Abstract |
| 737 |
Adaptability and acceptability of new orange-fleshed sweetpotato varieties in selected areas of Eastern and Central zones of Tanzania.
Masumba E., Kapinga R., Tollan S.M., Mary O., Yongolo and Kitundu C.D. |
Abstract |
| 746 |
Genotypic variation among sweetpotato clones for ß-Carotene and sugar content.
Mcharo M. and La Bonte D. |
Abstract |
| 755 |
Potential of cassava and sweetpotato leaves to contribute to the Vitamin A requirements.
Mulokozi G., Mugyabuso J. and Modaha F. |
Abstract |
| 763 |
Promoting indigenous wild edible fruits to complement roots and tuber crops in alleviating vitamin A deficiencies in Uganda.
Musinguzi E., Kikafunda J.K. and Kiremire B.T. |
Abstract |
| 770 |
Partnership: An approach to promote orange fleshed sweetpotato, experiences from Uganda.
Mwanga R.O.M., Niringiye C., Odongo B., Opio A.F., Lemaga B., Kyaddondo B., Sserunjogi L., Owori C. and Kapinga R. |
Abstract |
| 780 |
Dissemination and commercialization of orange-fleshed sweetpotato varieties through FFS and VITAA partnership: Experiences from eastern Uganda.
Namanda S., Kapinga R., Stathers T., van de Fliert E., Owori C. and Tumwegamire S. |
Abstract |
| 790 |
Development and promotion of sweetpotato products in Western Kenya.
Nungo R.A., Ndolo P.J., Kapinga R. and Agili S. |
Abstract |
| 795 |
Orange-fleshed sweetpotato as a disaster mitigation crop in war- torn Northern Uganda.
Odongo A., Lemaga B., Kapinga R., Tumwegamire S. and Nsumba J. |
Abstract |
| 801 |
Farmers’ perception and varieties acceptability of orange-fleshed sweetpotato in Zanzibar.
Saleh H.H. and Zahor O.T. |
Abstract |
| 807 |
Acceptability studies of orange-fleshed sweetpotato varieties in Uganda.
Tumwegamire S., Kapinga R., Mwanga R.O.M., Niringiye C., Lemaga B.
and Nsumba J. |
Abstract |
Symposium communiqué on key emerging issues |
| 819 |
Management of cassava brown streak disease (CBSD) in sub-Saharan Africa |
| 820 |
Promotion of orange-fleshed sweetpotato to combat A deficiency in sub- Saharan Africa: VITAA (Vitamin A for Africa) vitamin Partnership Programme experiences |
| List of Participants |
