1. Family: Poaceae Barnhart
    1. Genus: Cenchrus L.
      1. Cenchrus americanus (L.) Morrone

        Pearl millet ( Pennisetum glaucum) is well-adapted to poor, droughty and infertile soils and is therefore a vital subsistence crop in countries surrounding the Sahara Desert and in western Africa where soils are tough and rainfall is low. As climate change continues to affect weather and rainfall patterns, pearl millet is likely to become increasingly important as a crop for the future. In addition to being an important food source, pearl millet has a number of medicinal applications.

    [KSP]
    General Description
    Pearl millet is a hardy crop able to survive harsh arid conditions and poor acidic soils where wheat rice, maize, sorghum and barley are unable to grow.

    Pearl millet ( Pennisetum glaucum) is well-adapted to poor, droughty and infertile soils and is therefore a vital subsistence crop in countries surrounding the Sahara Desert and in western Africa where soils are tough and rainfall is low. As climate change continues to affect weather and rainfall patterns, pearl millet is likely to become increasingly important as a crop for the future. In addition to being an important food source, pearl millet has a number of medicinal applications.

    Species Profile

    Geography and distribution

    Pennisetum glaucum is cultivated in Eastern Europe, Africa, temperate Asia (western Asia, Arabia and China) and tropical Asia (India and Indo-China), Australia, South America, Caribbean.

    Pearl millet was first domesticated in the Sahel region 4,000 to 5,000 years ago from its wild ancestor, Pennisetum violaceum. From the Sahel it spread to East Africa and southern Africa and later to the Indian subcontinent. It reached the Americas by the 18th century.

    Pearl millet is cultivated as a grain crop mainly in the semi-arid regions of West Africa as well as in the driest parts of East and southern Africa and the Indian subcontinent. It is popularly grown as a fodder crop in Brazil, the US, South Africa and Australia. 

    Description

    Overview:  Pennisetum glaucum is an annual with erect, robust stems 150-300 cm long. The nodes along the stem are bearded and the ligule (the appendage between the sheath and the blade of the leaf) is a fringe of hairs.

    Leaves: Leaf blades are 50-100 cm long and up to 70 mm wide.  

    Flowers: The inflorescence is a panicle (a compound of axes, known as racemes, along which the spikelets are arranged - spikelets are the clustered unit of flowers and bracts typical of grasses). Beneath each spikelet is a whorl of bristles. Spikelets are 3-6 mm long and comprise one basal sterile floret and one fertile floret. Each floret is enclosed by bracts, known as glumes, of different sizes, the lower one obscure and the upper one 0.5-2.0 mm long. The flower has three anthers and the styles are joined at the base. The flower does not contain lodicules (small structures at the base of the stamens). 

    Fruits:The fruit is a caryopsis (a fruit in which the seed is fused to an outer wall) 2.0-5.5 mm long which is exposed at maturity.

    Uses

    100 million people in parts of tropical Africa and India depend on pearl millet as their staple food source. Pearl millet can be prepared in a variety of different ways: 

    • The grains can be boiled or steamed directly, or ground into a flour to make bread, porridge or couscous.
    • Pearl millet and pulses can be seasoned to make delicious snacks popular in Africa.
    • The grain is also used in the making of alcoholic and non-alcoholic beverages. Millet beer, for example is often considered a staple of religious and social life in Africa.
    • Pearl millet is high in protein which makes it an excellent feed for poultry and other livestock.

    The stems of the plant are used for fencing, thatching and building materials. The red and purple varieties of pearl millet are used for making dyes for leather and wood.

    Pearl millet also has a number of medicinal applications. In African traditional medicine the grain is used to treat chest disorders, leprosy, blennorrhoea and poisonings. A decoction made from the roots is used in the treatment of jaundice and the vapour from inflorescence extracts is inhaled for respiratory diseases in children. 

    Pearl millet has been found to be effective in suppressing root-lesion nematodes ( Pratylenchus penetrans) and is being used as an alternative to soil fumigation in tobacco and potato cropping in Canada.

    Pearl millet grains are used in rituals in some areas.

    Crop wild relatives of pearl millet

    Millets are better adapted to poor, droughty and infertile soils than most other grain crops. Even so, lower and erratic rainfall patterns are the cause of major problems and diseases, such as downy mildew, which can destroy as much as 80% of the crop. Wild relatives of pearl millet were screened for traits such as drought- and disease-resistance and were then bred with cultivated varieties that demonstrated high yield and other positive traits. An improved strain of the crop was released in 2005 by the Institute of Biological, Environmental and Rural Sciences at Aberystwyth University for cultivation throughout India and further work is being done to transfer these valuable traits into other varieties worldwide.

    Pennisetum squamulatum is a relative of pearl millet that is endangered in the wild and is therefore a conservation priority. Efforts are being made by the Millennium Seed Bank and the Global Crop Diversity Trust to collect the seeds of the wild relatives of 29 of the most important food crops. The project is called 'Adapting Agriculture to Climate Change' and by protecting, collecting and preparing crop wild relatives such as  Pennisetum squamulatum for use in breeding programs, their genetic potential can be harnessed to make our crops more resilient in the face of climate change. 

    Millennium Seed Bank: Seed storage

    The Millennium Seed Bank Partnership aims to save plants worldwide, focusing on those plants which are under threat and those which are of most use in the future. Once seeds have been collected they are dried, packaged and stored at -20°C in our seed bank vault.

    Description of seeds: Average 1,000 seed weight = 7.1 gNumber of seed collections stored in the Millennium Seed Bank:OneSeed storage behaviour:Orthodox (the seeds of this plant can be dried to low moisture contents without significantly reducing their viability. This means they are suitable for long-term frozen storage such as at the MSB)Germination testing: Successful

    This species at Kew

    Pressed and dried specimens of pearl millet are held in Kew's Herbarium, where they are available to researchers by appointment. Details of some of these specimens can be seen online in Kew's Herbarium Catalogue.

    Distribution
    Egypt, Mali, Niger
    Ecology
    Well drained loamy to sandy soils.
    Conservation
    Widespread in cultivation.
    [KSP]
    Use
    Food and drink, fodder crop, dye, construction materials, medicinal, silage, haymaking, grazing.

    Images

    Distribution

    Found In:

    Angola, Benin, Burkina, Cameroon, Central African Repu, Chad, Congo, Gabon, Malawi, Mozambique, Nigeria, Togo, Zambia, Zaïre

    Introduced Into:

    Afghanistan, Alabama, Amur, Andaman Is., Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Assam, Baltic States, Bangladesh, Belarus, Botswana, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Burundi, California, Central European Rus, Chile Central, Chile North, China North-Central, Colombia, Colorado, Connecticut, Cuba, Cyprus, Delaware, District of Columbia, Djibouti, Dominican Republic, East Aegean Is., East European Russia, Ecuador, Egypt, Eritrea, Fiji, Florida, Gambia, Georgia, Guinea, Guinea-Bissau, Haiti, Hawaii, Idaho, Illinois, India, Indiana, Iowa, Iran, Iraq, Ivory Coast, Japan, Jawa, Kamchatka, Kansas, Kazakhstan, Kazan-retto, Kentucky, Khabarovsk, Kirgizstan, Korea, Krym, Kuril Is., Kuwait, KwaZulu-Natal, Lebanon-Syria, Leeward Is., Libya, Louisiana, Madagascar, Magadan, Maine, Mali, Marianas, Maryland, Masachusettes, Mauritania, Mauritius, Mexico Central, Mexico Northeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Myanmar, Namibia, Nansei-shoto, Nebraska, Nepal, Nevada, New Caledonia, New Hampshire, New Jersey, New Mexico, New York, New Zealand North, Niger, North Carolina, North Dakota, North European Russi, Northern Provinces, Northwest European R, Ogasawara-shoto, Ohio, Oklahoma, Oman, Oregon, Pakistan, Palestine, Paraguay, Pennsylvania, Primorye, Puerto Rico, Rhode I., Réunion, Sakhalin, Sardegna, Saudi Arabia, Senegal, South Carolina, South Dakota, South European Russi, Sri Lanka, Sudan, Tadzhikistan, Tennessee, Texas, Transcaucasus, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Utah, Uzbekistan, Vermont, Vietnam, Virginia, Washington, West Himalaya, West Virginia, Wisconsin, Wyoming, Yemen

    Common Names

    English
    Pearl millet

    Cenchrus americanus (L.) Morrone appears in other Kew resources:

    First published in Ann. Bot. (Oxford) 106: 127 (2010)

    Literature

    • [1] Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015) The Plants of Sudan and South Sudan . Kew publishing, Royal Botanic Gardens, Kew.
    • [2] (2014) Webbia; Raccolta de Scritti Botanici 69: 145-156
    • [3] Forzza, R.C. & al. (2013) Lista de Espécies da Flora do Brasil . http://floradobrasil.jbrj.gov.br/2010/.
    • [4] (2012) Boissiera 65: 1-391
    • [5] (2012) Smithsonian Contributions to Botany 98: 1-1192
    • [6] (2011) Darwiniana 49: 139-247
    • [7] (2011) Folia Malaysiana 12: 47-68
    • [8] Onana, J.M. (2011) The vascular plants of Cameroon a taxonomic checklist with IUCN assessments . National herbarium of Cameroon, Yaoundé.
    • [9] (2010) Flora of New Zealand , ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • [10] (2010) Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • [11] Beentje, H. (2010). The Kew Plant Glossary: an Illustrated Dictionary of Plant Terms. Royal Botanic Gardens, Kew.
    • [12] Clayton, W.D. & Snow, N. (2010) A key to Pacific Grasses . Kew Publishing, Royal Botanic Gardens, Kew.
    • [13] (2009) Indian Journal of Forestry 32: 657-668
    • [14] (2009) Scripta Botanica Belgica 41: 1-517
    • [15] (2008) Encyclopedia of Flora and Fauna of Bangladesh 12: 1-505. Asiatic Society of Bangladesh.
    • [16] (2008) Journal of Economic and Taxonomic Botany 32: 403-500
    • [17] (2008) Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348
    • [18] (2008) Pleione 2: 98-105
    • [19] (2008) Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • [20] Grubov, V.I. (2008) Key to the vascular plants of Mongolia (with an atlas) . Academy of Sciences, Mongolian People's Republic, Ulaan Bator.
    • [21] Mabberley, D.J. (2008). Mabberley’s Plant-book: a Portable Dictionary of Plants, their Classification and Uses. Third edition. Cambridge University Press, Cambridge.
    • [22] Royal Botanic Gardens, Kew (2008). Seed Information Database (SID). Version 7.1.
    • [23] (2007) Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • [24] Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • [25] (2006) Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • [26] (2006) Scripta Botanica Belgica 35: 1-438
    • [27] Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006) Flore Analytique du Bénin . Backhuys Publishers.
    • [28] Brink, M. & Belay, G. (2006). Cereals and Pulses: Volume 1 of Plant Resources of Tropical Africa. PROTA.
    • [29] Catarino, L., Sampaio Martins, E., Pinto-Basto, M.F. & Diniz, M.A. (2006) Plantas Vasculares e Briófitos da Guiné-Bissau . Instituto de investigação científica tropical, Instituto Português de apoio ao desenvolvimento.
    • [30] Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006) Catálogo de las Gramíneas de México . CONABIO, México city.
    • [31] Takhtajan, A.L. (ed.) (2006) Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.
    • [32] Sita, P. & Moutsambote, J.-M. (2005) Catalogue des plantes vasculaires du Congo , ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • [33] (2003) Contributions from the United States National Herbarium 45: 1-590
    • [34] Flora of North America Editorial Committee (2003) Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • [35] Germishuizen, G. & Meyer, N.L. (eds.) (2003) Plants of Southern Africa: an annotated checklist. Strelitzia 14. . National Botanical Institute, Pretoria.
    • [36] (2002) Boissiera 58: 1-401
    • [37] Press, J.R. et al. (2000) Annotated Checklist of the Flowering Plants of Nepal . Natural History Museum, London.
    • [38] (1999) Flora of Russia. The European part and bordering regions 1: 1-546. A.A. Balkema, Rotterdam, Broekfield.
    • [39] (1999) Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181
    • [40] Lee, W.T. (1996) Lineamenta Florae Koreae . Soul T'ukpyolsi: Ak'ademi Sojok.
    • [41] (1995) Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • [42] Dassanayake (ed.) (1994) A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • [43] MacKee, H.S. (1994) Catalogue des plantes introduites et cultivées en Nouvelle-Calédonie , ed. 2: 1-164. Museum national d'histoire naturelle, Paris.
    • [44] Audru, J., Cesar, J. & Lebrun, J.-P. (1993) Les Plantes Vasculaires de la République de Djibouti. Flore Illustrée 2(2): 433-968. CIRAD, Départerment d'Elevage et de Médecine vétérinaire, Djibouti.
    • [45] Jones, M. (1991) A checklist of Gambian plants . Michael Jones, The Gambia College.
    • [46] (1989) Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.
    • [47] (1989) Lejeunia; Revue de Botanique , n.s., 132: 1-127
    • [48] Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989) Florae Indicae Enumeratio: Monocotyledonae . Botanical Survey of India, Calcutta.
    • [49] (1987) Ogasawara Research 13: 1-55
    • [50] Al-Rawi, A. (1987) Flora of Kuwait 2: 1-455. Alden Press Ltd., U.K..
    • [51] Koyama, T. (1987) Grasses of Japan and its neighboring regions: an identification manual . Kodansha, Tokyo, Japan.
    • [52] Boudet, G., Lebrun, J.P. & Demange, R. (1986) Catalogue des plantes vasculaires du Mali . Etudes d'Elevage et de Médecine Vétérinaire des Pays Tropicaux.
    • [53] Davis, P.H. (ed.) (1985) Flora of Turkey and the East Aegean Islands 9: 1-724. Edinburgh University Press, Edinburgh.
    • [54] Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985) Sosudistye rasteniia sovetskogo Dal’nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.
    • [55] Brunel, J.F., Hiepo, P. & Scholz, H. (eds.) (1984) Flore Analytique du Togo Phanérogames: 1-751. GTZ, Eschborn.
    • [56] Boulvert, Y. (1977) Catalogue de la Flore de Centrafrique 2(2): 1-94. ORSTOM, Bangui.
    • [57] Peyre de Fabregues, B. & Lebrun, J.-P. (1976) Catalogue des Plantes Vascularies du Niger . Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
    • [58] Walker, E.H. (1976) Flora of Okinawa and the southern Ryukyu islands . Smithsonian Institution Press, Washington D.C., U.S.A..
    • [59] Lebrun, J.P. (1973) Énumération des plantes vasculaires du Sénégal . Maisons Alfort: Institut d'élevage et de médecine vétérinaire des pays tropicaux.
    • [60] Bosser, J. (1969) Gramiées des pasturages et des cultures a Madagascar . ORSTOM, Paris.
    • [61] (1968) Flora of Iraq 9: 1-588. Ministry of Agriculture & Agrarian Reform, Baghdad.
    • [62] (1968) Mémoires du Muséum National d'Histoire Naturelle. Serie B. Botanique 17: 1-206
    • [63] (1957) Flora Tadzhikskoi SSR 1: 1-547. Izd-vo Akademii nauk SSSR, Moskva.
    • [64] (1950) Flora Kirgizskoi SSR 2: 1-315. Frunze : Izd-vo KirgizFAN SSSR.
    • [65] (1941) Flora Uzbekistana 1: 1-566. Izd-va Akademii nauk Uzbekskoi SSR, Tashkent.
    • [66] Hubbard, C.E. & Vaughan, R.E. (1940) Grasses of Mauritius and Rodriguez . Crown Agents for the Colonies, London.
    • [67] Robyns, W. (1934) Flore Agrostologique du Congo Belge et du Ruanda-Urundi 2: 9-386. Goemaere, Bruxelles.
    • [68] (1932) Flora Turkmenii 1: 1-340. Turkmenskoe gosudarstvennoe izd., Ashkhabad.
    • [69] H. Lecomte (1922) Flore Générale de l'indo-Chine 1(3): 193-336
    • [70] de Cordemoy, E.J. (1895) Flore de l'ile de la Réunion . Librairie des sciences naturelles Paul Klincksieck, Paris.

    Sources

    International Plant Names Index
    The International Plant Names Index (2016). Published on the Internet http://www.ipni.org
    [A] © Copyright 2016 International Plant Names Index. https://creativecommons.org/licenses/by/3.0

    Kew Species Profiles
    Kew Species Profiles
    [B] http://creativecommons.org/licenses/by-nc-sa/3.0
    [C]

    World Checklist of Selected Plant Families
    World Checklist of Selected Plant Families(2016). Published on the Internet http://apps.kew.org/wcsp/
    [D] See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement. http://creativecommons.org/licenses/by-nc-sa/3.0
    [E] © Copyright 2016 International Plant Names Index and World Checkist of Selected Plant Families. https://creativecommons.org/licenses/by/3.0
    [F] © Copyright 2017 International Plant Names Index and World Checkist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0