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1 Section for Crop Sciences, Department of Plant and Environmental Sciences, Faculty of Science, Københavns Universitet 2 Universidad de Chile 3 University of Bologna 4 Centro de Estudios Avanzados en Zonas Áridas (CEAZA) 5 Université du Mali 6 Food and Agriculture Organization (FAO) 7 PROINPA Regional Altiplano Oficina Regiona 8 Centro de Investigación Intihuasi, Instituto de Investigaciones Agropecuarias INIA 9 Campus International de Baillarguet 10 Universidad Catolica del Norte 11 Universidad de Chile 12 Section for Crop Sciences, Department of Plant and Environmental Sciences, Faculty of Science, Københavns Universitet 13 Universidad Catolica del Norte
Climate change is rapidly degrading the conditions of crop production. For instance, increasing salinization and aridity is forecasted to increase in most parts of the world. As a consequence, new stress-tolerant species and genotypes must be identified and used for future agriculture. Stress-tolerant species exist but are actually underutilized and neglected. Many stress-tolerant species are indeed traditional crops that are only cultivated by farmers at a local scale. Those species have a high biodiversity value. Besides, the human population will probably reach nine billion within coming decades. To keep pace with population growth, food production must increase dramatically despite the limited availability of cultivable land and water. Here, we review the benefits of quinoa, Chenopodium quinoa Willd., a seed crop that has endured the harsh bioclimatic conditions of the Andes since ancient times. Although the crop is still mainly produced in Bolivia and Peru, agronomic trials and cultivation are spreading to many other countries. Quinoa maintains productivity on rather poor soils and under conditions of water shortage and high salinity. Moreover, quinoa seeds are an exceptionally nutritious food source, owing to their high protein content with all essential amino acids, lack of gluten, and high content of several minerals, e.g., Ca, Mg, Fe, and health-promoting compounds such as flavonoids. Quinoa has a vast genetic diversity resulting from its fragmented and localized production over the centuries in the Andean region, from Ecuador to southern Chile, and from sea level to the altiplano. Quinoa can be adapted to diverse agroecological conditions worldwide. Year 2013 has therefore been declared the International Year of Quinoa by the United Nations Food and Agriculture Organization. Here, we review the main characteristics of quinoa, its origin and genetic diversity, its exceptional tolerance to drought and salinity, its nutritional properties, the reasons why this crop can offer several ecosystem services, and the role of Andean farmers in preserving its agrobiodiversity. Finally, we propose a schematic model integrating the fundamental factors that should determine the future utilization of quinoa, in terms of food security, biodiversity conservation, and cultural identity. © 2013 INRA and Springer-Verlag France.
Agronomy for Sustainable Development, 2014, Vol 34, Issue 2, p. 349-359
Agrobiodiversity; Andean farmers; Food quality; Food security; Quinoa; Stress tolerance; Sustainability
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