Abstract
Fonio, Digitaria exilis (Kippist) Stapf and Digitaria iburua Stapf, is a hardy crop grown in West Africa. It is a staple food in some parts of the region with excellent nutritional and culinary properties. It contains high quality vitamins, minerals, fiber, and sulfur-containing methionine and cysteine. The crop originated in present-day Guinea and Mali. It is an annual plant growing to a height of 80 cm (D. exilis) or 150 cm (D. iburua). It is a free-tillering C4 plant, with slender and glabrous culms and a life cycle of 70–150 days. Fonio is mainly cultivated on marginal soils, and soils containing aluminum. Fonio is cultivated at 400–1500 m elevation, at 25–30 °C and annual rainfall 150–3000 mm. The crop is drought tolerant, and mostly cultivated by traditional methods that make harvesting and threshing labor intensive. The crop is faced with challenges that include; poor yields (≤ 500 kg/ha), seed shattering, plant lodging, small grain size, fungal diseases and infestation by the parasitic weed Striga rowlandi. The cultivated species are allotetraploids (2n = 4x = 36). The landraces from farmers’ selection show polymorphism in their morphological, reproductive, yield and molecular-marker characteristics that can be used in marker-assisted selection for crop improvement. Fonio grain is consumed in the form of porridges, fonio jollof, flour creams or used to prepare salads, couscous, stews, candy and alcoholic/non-alcoholic beverages. Fonio and its products are good for diabetics and celiacs. The ecological versatility of fonio has enormous potential as one of the crops that guarantee food security in the future.
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Appendices
Appendices
2.1.1 Appendix I: Research Institutes and Online Resources Relevant to Fonio
Institute/Organization | Specialization and research activities | Contact and website |
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Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Montpellier. France. (French Agricultural Research Centre for International Development). | General All aspects of the crop | Head Office: 42, rue Scheffer, 75,116 Paris, France Tel.: +33 1 53 70 20 00 Montpellier Office: Avenue Agropolis, 34,398 Montpellier Cedex 5, France Tel.: +33 4 67 61 58 00; www.cirad.fr/en |
Guinea Agronomic Research Institute (IRAG) | Agronomic, extension and marketing | Agricultural Research Institute of Guinea Bd. of Commerce, BP: 1523 Conakry Republic of Guinea Tel. (224) 30435580 e-Fax: (33) 821480314 |
Institut Togolais de Recherche Agronomique (ITRA) | Agronomic, extension and marketing | National Road N ° 1, Km 10, Agoè Cacavéli – BP 1163, Lomé – Togo |
National Cereals Research Institute, Badeggi. Nigeria | Agronomic, extension and marketing | National Cereals Research Institute (NCRI), Badeggi, P. M. B 8, Bida, Niger State Phone No.:08069314862 |
Institut national de recherches agricoles du Bénin (National Agricultural Research Institute, INRAB), Niaouli. Benin Republic | Agronomic, extension and marketing | 01 BP 884 Cotonou, Benin |
Institut d’économie rurale (IER, Mali) | Agronomic, extension and marketing | MOHAMED V ST, BP 258, Bamako, Mali |
Senegalese Agricultural Research Institute – ISRA | Agronomic, extension and marketing | BP 3120 Tel. +221 33,832 84 27 Fax +221 33,832 24 27 Dakar, Senegal |
2.1.2 Appendix II: Genetic Resources of Fonio
Cultivar | Important traits | Cultivation location |
---|---|---|
Afio | White seed fonio, early maturing landrace (3 months) | Northern Togo |
Ayôrô (Yôrô) | White seed landrace, matured in less than 3 months | Northern Togo |
Adjougouri | Produces many tillers | Northern Togo |
Angim | Late maturing landrace (4 months). | Northern Togo |
Ezio | White seed, easy to husk, early maturing landrace (3 months). | Southern Togo |
Folom | Hairy and irritating; tiny, rounded white grains and late maturing landrace | Northern Togo |
Foukmum | Produces many tillers; late maturing landrace (4 months) | Northern Togo |
Gnimimbi | Produces sparkly, tiny and easy husking grains; early maturing landrace | Southern Togo |
Ipowan | Reddish grain; intermediate maturing landrace (3.5 months) | Central Togo |
Kopordagou | Rounded and reddish grains; late maturing landrace (4 months) | Central Togo |
Yôrô | Extra-early maturing (2.5 months); harvesting, drying and conservation very difficult as it matures during the rainy season; low yield and high loss of seeds due to shattering; grains must be roasted before pounding; paste not soft and difficult to prepare | Benin |
Ipoaga | Semi-late landrace (4 months); panicles with mostly 4 to 5 racemes; black grains; easy cultivation, drying and storage; drought tolerant; high yield; large and very hard chaff; husking difficult and time-consuming; paste normally soft and tasty but it quality and color are generally affected by non-removed chaff | Benin |
Iporhouwan | Intermediate landrace (3.5 months); easy cultivation, drying, and storage; high yield; grains big and easy to husk; paste soft and tasty. Susceptible to drought and poor soils (reduced yield) | Benin Republic |
Iporni | Late maturing (5 months); easy cultivation, drying and storage; performs well in humid zones (around shallows); low seed loss (low shattering); drought susceptible; hard bran; husking difficult and time-consuming paste normally soft and tasty but it quality and color can be affected by non-removed bran | Benin |
Yawko | Extra-early growing cycle with 60–75 days | Senegal |
Mora | Intermediate maturity of 90 days | Senegal |
Rane | Intermediate-late maturing requiring 100–120 days | Senegal |
Maoko | Late maturing landrace requiring 150 days; seeds are coarse and heavier | Senegal |
Jenger 1 | High yield; produces many reproductive tillers; brown seeds, erect plants; leaf and glumes pubescence. | Plateau State, Nigeria |
Tzaat | High yield; dark brown seeds; erect plants; leaf and glumes pubescence | Bauchi State, Nigeria |
Chit Kusung | High yield; early maturing; straggling plant habit; light brown seeds; leaf and glumes glabrous | Bauchi State, Nigeria |
Ibura | Very low yield; up to 8 racemes; erect plant; leaf and glumes pubescence; brown seeds | Plateau State, Nigeria |
Wondat 1 | Moderate yield; intermediate maturity; light brown seeds; produces many reproductive tillers; straggling plant habit; leaf and glumes glabrous | Bauchi State, Nigeria |
Tswan 1 | Low yield; straggling plant habit; high number of nodes; tillers profusely with few bearing inflorescence; leaf and glumes glabrous | Kaduna State, Nigeria |
Tswan 2 | Extra early; straggling plant habit; leaf and glumes glabrous; light brown seeds; seed shattering | Kaduna State, Nigeria |
Kachang | Low yield; erect plant habit; leaf and glumes glabrous; brown seeds | Plateau State, Nigeria |
Yar zheti | Late maturing; moderate yield; straggling plant habit; leaf and glumes glabrous; light brown seeds | Bauchi State, Nigeria |
Lhad | Late maturing; tall and thick culm; large leaf | Bauchi State, Nigeria |
Wèlè | High protein content (16.97 g/100 g DM); low carbohydrate content (70.85 g/100 g DM) | Mali |
Siragué | Most popular variety; yielding 800–1000 kg/ha with 52% for harvest index | Guinea |
Péazo | Low protein content (7.86 g/100 g DM); high carbohydrate content(80.03 g/100 g DM) | Mali |
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Abdul, S.D., Jideani, A.I.O. (2019). Fonio (Digitaria spp.) Breeding. In: Al-Khayri, J., Jain, S., Johnson, D. (eds) Advances in Plant Breeding Strategies: Cereals. Springer, Cham. https://doi.org/10.1007/978-3-030-23108-8_2
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