Tolerance to saline conditions

Biondi Stefania, Ruiz Karina. B, Martinez Enrique A., Zurita-Silva Andrés, Orsini Francesco, Antognoni Fabiana, Dinelli Giovanni, Marotti Ilaria, Gianquinto Giorgio, Maldonado Sara, Burrieza Hernan, Bazile Didier, Adolf Verena Isabelle, Jacobsen Sven-Erik. 2013. Tolerance to saline conditions. In : Estado del arte de la quinua en el mundo en 2013: Libro de resúmenes. Bazile Didier (ed.), Bertero Hector Daniel (ed.), Nieto Carlos (ed.). Santiago : FAO-CIRAD, Résumé, p. 29.

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Abstract : Salinity is today amongst the most widespread constraints in irrigated agriculture. Thus, salt tolerance is an agronomically important trait that is receiving increasing attention among scientists worldwide. Quinoa is tolerant to soil salinity and other adverse environmental factors, hence attracting the attention of researchers as a possible crop in a changing world scenario in which scarcity of water resources and increasing soil and water salinization are the primary causes of crop loss. Quinoa's exceptional tolerance to salinity, frost, drought and other types of abiotic stress also makes it a model species for investigating cellular, physiological, bio-molecular and morphological mechanisms at the basis of stress tolerance in halophytes and in plants as a whole. There are quinoa ecotypes adapted to valley, altiplano, salt desert, sea level and tropics, which display broad genetic variability in salinity tolerance. For this reason, quinoa represents a valuable resource for selection of the most suitable material and for breeding new varieties adapted to different environmental and geographical conditions. In this chapter, scientific studies on salinity tolerance in quinoa conducted in the last decade by numerous research groups operating in at least nine different countries are described. We focus on studies in which different quinoa genotypes are compared for their response to saline conditions, demonstrating that salt tolerance is a complex, multigenic trait involving a plethora of physiological and structural adaptations. Results available up to now regarding the effect of salinity on the nutritional properties of quinoa are reported. (Texte intégral)

Mots-clés Agrovoc : Chenopodium quinoa, Tolérance au sel, Résistance à la sécheresse, Physiologie végétale, Adaptation, Génotype, Amélioration des plantes

Mots-clés géographiques Agrovoc : Région andine, Amérique du Sud, Monde

Classification Agris : F30 - Plant genetics and breeding
H50 - Miscellaneous plant disorders
F62 - Plant physiology - Growth and development

Axe stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Biondi Stefania, Universita di Bologna (ITA)
  • Ruiz Karina. B, Universidad de Chile (CHL)
  • Martinez Enrique A., CEAZA (CHL)
  • Zurita-Silva Andrés, CEAZA (CHL)
  • Orsini Francesco, University of Bologna (ITA)
  • Antognoni Fabiana, Université de Bologne Alma mater studiorum (ITA)
  • Dinelli Giovanni, Universita di Bologna (ITA)
  • Marotti Ilaria, Universita di Bologna (ITA)
  • Gianquinto Giorgio, University of Bologna (ITA)
  • Maldonado Sara, Universita di Bologna (ITA)
  • Burrieza Hernan, Universidad de Buenos Aires (ARG)
  • Bazile Didier, CIRAD-ES-UPR GREEN (FRA) ORCID: 0000-0001-5617-9319
  • Adolf Verena Isabelle, University of Copenhagen (DNK)
  • Jacobsen Sven-Erik, University of Copenhagen (DNK)

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