LOST CROPS of AFRICA volume III Fruits Development, Security, and Cooperation Policy and Global Affairs THE NATIONAL ACADEMIES PRESS 500 Fifth Street, N.W. Washington, DC 20001 NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance. Program and staff costs for this study came from the U.S. Agency for International Development, specifically USAID’s Bureau for Africa with additional support from the Office of U.S. Foreign Disaster Assistance. Additional funding was received from the Presidents Committee of the National Academies. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the organizations or agencies that provided support for the project. International Standard Book Number-13: 978-0-309-10596-5 (Book) International Standard Book Number-10: 0-309-10596-X (Book) International Standard Book Number-13: 978-0-309-10597-2 (PDF) International Standard Book Number-10: 0-309-10597-8 (PDF) Library of Congress Catalog Card Number: 93086876 Additional copies of this report are available from the National Academies Press, 500 Fifth Street, N.W., Lockbox 285, Washington, DC 20055; (800) 624-6242 or (202) 334- 3313 (in the Washington metropolitan area); Internet, http://www.nap.edu Suggested citation: National Research Council. 2008. Lost Crops of Africa. Volume III: Fruits, Washington, D.C.: The National Academies Press. Copyright 2008 by the National Academy of Sciences. All rights reserved. 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The National Research Council was organized by the National Academy of Sciences in 1916 to associate the broad community of science and technology with the Academy’s purposes of furthering knowledge and advising the federal government. Functioning in accordance with general policies determined by the Academy, the Council has become the principal operating agency of both the National Academy of Sciences and the National Academy of Engineering in providing services to the government, the public, and the scientific and engineering communities. The Council is administered jointly by both Academies and the Institute of Medicine. Dr. Ralph J. Cicerone and Dr. Wm. A. Wulf are chair and vice chair, respectively, of the National Research Council. www.national-academies.org PANEL ON AFRICAN FRUITS AND VEGETABLES NORMAN BORLAUG, Chair, Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT), Mexico City, Mexico ANTHONY CUNNINGHAM, School for Environmental Research, Charles Darwin University, Darwin, Australia JANE I. GUYER, Department of Anthropology, Johns Hopkins University, Baltimore, Maryland, USA HANS HERREN, Millennium Institute, Arlington, Virginia, USA CALESTOUS JUMA, John F. Kennedy School of Government, Harvard University, Cambridge, Massachusetts, USA AKINLAWON MABOGUNJE, Development Policy Centre (retired), Ibadan, Nigeria BARBARA UNDERWOOD, National Eye Institute (retired), Sun City, California, USA MONTAGUE YUDELMAN, Woodrow Wilson Visiting Fellow, Washington, DC, USA PROGRAM STAFF MARK DAFFORN, Study Director NOEL D. VIETMEYER, Consulting Author and Scientific Editor F. R. RUSKIN, Editor (through 1994) ELIZABETH MOUZON, Senior Secretary (through 1994) DON OSBORN, MUCIA Intern (1994) BRENT SIMPSON, MUCIA Intern (1993) MOLLY MUGNOLO, MUCIA Intern (1992) v CONTRIBUTORS More than 1,000 people have participated in the National Research Council’s overall study of the crops of Africa. Most contributed by nominating species of grains, fruits, nuts, vegetables, legumes, oilseeds, spices, sweeteners, and beverage plants they deemed worthy of inclusion. All those individuals played a part in developing this, the third product from the study. The following list, however, includes especially the ones who provided technical details that became incorporated into chapters of this particular book. To all contributors, listed and unlisted, we are truly grateful. AFRICA PAUL O. ANEGBEH, ICRAF-IITA-IFAD Agroforestry Project, Onne, Nigeria NEREE ONGUENE AWANA, Tropenbos Cameroon Programme, Kribi, Cameroon SALOMAO BANDEIRA, Department of Biological Sciences, Universidade EDOUARD G. BONKOUNGOU, Ouagadougou, Burkina Faso PHILIP BOTMA, ARC Infruitec-Nietvoorbij, South Africa DOMINIC BYARUGABA, Makerere University Institute of Environment and Natural Resources, Kampala, Uganda EBBY CHAGALA, Kenya Forestry Research Institute, Nairobi, Kenya AUGUSTINE CHARLES CHIKUNI, National Herbarium & Botanic Gardens of Malawi, Zomba, Malawi LOU COETZER, Department of Botany, University of Pretoria, Pretoria, South Africa ROY DANFORTH, Loko Agroforestry Program, Congo IDRISSA DICKO, Ouagadougou, Burkina Faso EDMOND DOUNIAS, CNRS, Montpellier, France PIERRE DU PLESSIS, CRIAA SA-DC, Windhoek, Namibia ROSEMARY DU PREEZ, ARC-Institute for Tropical and Subtropical Crops, Nelspruit, South Africa HERMAN ELS, Centre for Indigenous Knowledge, University of Pretoria, Pretoria, South Africa KLAUS FLEISSNER, Mahene Research Station, Ombalantu, Namibia BERNARD FOAHOM, Tropenbos Cameroon Programme, Kribi, Cameroon FRANCIS N. GACHATHI, Kenya Forestry Research Institute, Nairobi, Kenya BARBARA GEMMILL, University of Nairobi and Environment Liaison Center International, Nairobi, Kenya VELDIE VAN GREUNING, Department of Botany, University of Pretoria, Pretoria, South Africa CORI HAM, Department of Forest Science, University of Stellenbosch, Matieland, South Africa MARLISE JOUBERT, ARC Infruitec-Nietvoorbij, Stellenbosch, South Africa vi ROBERT KAITHO, International Livestock Research Institute, Nairobi, Kenya DAVID KENFACK, Limbe Botanic Garden, Limbe, Cameroon JOSEPH KENGUE, IRAD, Yaounde, Cameroon HERTA KOLBERG, National Plant Genetic Resources Centre, Windhoek, Namibia DAVID O. LADIPO, CENRAD, Jericho Hills, Ibadan, Nigeria PETER LOVETT, Meteo. Services Department, Legon, Accra, Ghana GILLIAN MAGGS-KÖLLING, National Botanical Research Institute, Windhoek, Namibia COLEEN MANNHEIMER, National Herbarium, Windhoek, Namibia HENK MAST, Eden Foundation, Zinder, Niger STANLEY MATEKE, Veld Products Research & Development, Gaborone, Botswana OSCAR EYOG MATIG, IPGRI/Sub-Saharan Forest Genetic Resources Programme, Cotonou, Benin PATRICK MAUNDU, Kenya Resource Center For Indigenous Knowledge, The National Museum Of Kenya, Nairobi, Kenya EDUARDO MONDLANE, Maputo, Mozambique J. MULLER, Ben Hur Rural Development Center, Gobabis, Namibia MOSES MUNJUGA, ICRAF, Nairobi, Kenya LUSAYO MWABUMBA, Mzuzu University, Luwinga, Mzuzu, Malawi MOUHOUSSINE NACRO, Laboratoire de Chemie Organique appliquee, Ouagadougou University, Ouagadougou, Burkina Faso C. K. MWAMBA, National Institute for Scientific and Industrial Research, Lusaka, Zambia OUSSEYNOU NDOYE, CIFOR Regional Office, Yaounde, Cameroon MZOMA R NGULUBE, SADC FSTCU, Forestry Department Headquarters, Lilongwe, Malawi AMADOU NIANG, SLWA/ICRAF, Bamako, Mali ALBERT NIKIEMA, CNSF, Ouagadougou, Burkina Faso PAUL NOREN, Loko Agroforestry Program, Congo J.C. OBIEFUNA, Department of Crop Production, Federal University of Technology, Owerri, Nigeria JONATHON C. OKAFOR, Tree Crops and Tropical Ecology Consultants, Enugu, Enugu State, Nigeria DOV PASTERNAK, ICRISAT Sahelian Center, Niamey, Niger PETER PHILLIPSON, Botany Department, Rhodes University, Grahamstown, South Africa NAT & PATRICIA QUANSAH, Morondava Centre, Morondava, Madagascar SIDY SANOGO, Programme Ressources Forestières Sikasso, Mali HABY SANOU, Programme Ressources Forestières Sotuba, Bamako, Mali PIETER SCHMIDT, Tropenbos Cameroon Programme, Kribi, Cameroon DAOUDA SIDIBE, Programme Ressources Forestières Sotuba, Bamako, Mali MODIBO M. SIDIBE, Institut d’economie Rurale, Bamako, Mali THOMAS SILOU, Centre IRD, Pointe-Noire, Congo FRANK W. TAYLOR, Veld Products Consultancies, Gaborone, Botswana vii JONATHAN TIMBERLAKE, Biodiversity Foundation for Africa, Bulawayo, Zimbabwe OTLOGETSWE TOTOLO, University of Botswana, Gaborone, Botswana BRAMA TRAORÉ, Imama, Tlemcen, Algeria SHEONA SHACKLETON, Environmental Science Programme, Rhodes University, Grahamstown, South Africa LOVEMORE SIMWANDA, Zambia National Farmers’ Union, Lusaka, Zambia HARRY C. VAN DEN BURG, Umlimi Lokhonile Seeds, Malkerns, Swaziland A.E. VAN WYK, Department of Botany, University of Pretoria, Pretoria, South Africa B. NIGEL WOLSTENHOLME, Pietermaritzburg, South Africa HAROUNA YOSSI, Programme Ressources Forestières, Sikasso, Mali OTHER REGIONS MICHAEL BENGE, Africa Program Coordinator, International Programs, USDA Forest Service, Washington DC, USA ALIZA BENZIONI, Institute for Agriculture and Applied Biology, Ben Gurion University of the Negev, Beer Sheva, Israel ANTHONY B. CUNNINGHAM, Department of Botany, University of Hawaii, Honolulu, Hawaii FRIEDA RAPOPORT CAPLAN, Frieda’s, Inc., Los Alamitos, California, USA J. MICHAEL FAY, Wildlife Conservation Society, Bronx, New York, USA JEFFREY A. GRITZNER, Department of Geography, The University of Montana, Missoula, Montana, USA JOHN HALL, School of Agricultural and Forest Sciences, University of Wales, Bangor, Wales, UK NAZMUL HAQ, International Centre for Underutilised Crops, University of Southampton, Southampton, UK DAVID B HARPER, Food and Agricultural Chemistry Department, The Queen’s University of Belfast, Belfast, UK JACQUE HUIGNARD, Université François-Rabelais, Tours, France RENEÉ HUTCHINGS, M. I. Exotics, Te Puke, New Zealand MOLLY JAHN, Department of Plant Breeding, Cornell University, Ithaca, New York, USA NORGE W. JEROME, University of Kansas School of Medicine, Kansas City, Kansas, USA SARAH LAIRD, New York, New York, USA ROGER LEAKEY, School of Tropical Biology, James Cook University, Cairns, Queensland, Australia RUTH MALLESON, Dunsmore, Buckinghamshire, UK JAMES MCCREIGHT, USDA-ARS, Salinas, California, USA SAMUEL MENDLINGER, Institute for Agriculture & Applied Biology, Ben-Gurion University of the Negev, Beer Sheva, Israel viii LAURA C. MERRICK, Department of Agronomy, Iowa State University, Ames, Iowa, USA YOSEF MIZRAHI, Institutes for Applied Research, Ben Gurion University of the Negev, Beer Sheva, Israel JOHN K. MORRIS, Tauranga, New Zealand JULIA K. MORTON, Morton Collectanea, Coral Gables, Florida AVINOAM NERD, Institute for Agriculture and Applied Biology, Ben-Gurion University of the Negev, Beer-Sheva, Israel DONALD OSBORN, Peace Corps, Washington, DC, USA CHRISTEL PALMBERG-LERCHE, Forestry Department, FAO, Rome, Italy CHRIS ROLLINS, Fruit & Spice Park, Homestead, Florida, USA VASSILIOS SARAFIS, School of Computing and Electrical Engineering, University of Queensland, Brisbane, Queensland, Australia JOHN SCHEURING, Novartis Foundation for Sustainable Development, Basel, Switzerland KATE SCHRECKENBERG, Forest Policy and Environment Group, Overseas Development Institute, London, UK HENRY SHANDS, USDA-ARS-National Seed Storage Lab, Fort Collins, Colorado, USA BRENT SIMPSON, Center for Global Change and Earth Observations, Michigan State University, East Lansing, Michigan, USA ELAINE M SOLOWEY, Kebbutz Ketura, Hevel-Eilot, Israel CLAUDE SWEET, San Diego, California, USA DUNCAN THOMAS, Department of Forest Science, Oregon State University, Corvallis, Oregon, USA HAN VAN DIJK, Department of Environmental Science, Wageningen University, Wageningen, The Netherlands TODD C. WEHNER, Department of Horticultural Science, North Carolina State University, Raleigh, North Carolina, USA ix