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Characterisation of quinoa (Chenopodium quinoa Willd.) accessions for the saponin content in Mediterranean environment

Giuditta De Santis, Carmen Maddaluno, Tiziana D’Ambrosio, Agata Rascio, Michele Rinaldi, Jacopo Troisi
  • Giuditta De Santis
    Research Centre for the Cereal, Council for Agricultural Research and Economics, Foggia, Italy | giuditta.desantis@crea.gov.it
  • Carmen Maddaluno
    Research Centre for the Cereal, Council for Agricultural Research and Economics, Foggia, Italy
  • Tiziana D’Ambrosio
    Department of Agriculture, Food and Environment, University of Foggia, Italy
  • Agata Rascio
    Research Centre for the Cereal, Council for Agricultural Research and Economics, Foggia, Italy
  • Michele Rinaldi
    Research Centre for the Cereal, Council for Agricultural Research and Economics, Foggia, Italy
  • Jacopo Troisi
    Laboratorio Chimico-Merceologico, Camera di Commercio, Napoli, Italy

Abstract

Seeds of the Andean seed crop quinoa (Chenopodium quinoa Willd.) usually contain saponins in the seed coat. Saponins give a bitter taste sensation and are a serious antinutritional factor, therefore selection of sweet genotypes with a very low saponin content in the seeds is a main breeding goal. The objective of this work was to identify, within germplasm lines of quinoa, previously selected for production and quality traits, superior genotypes low in saponins. For this purpose the total saponin content was determined in seeds of eight lines of quinoa and one variety (cv. Regalona Baer) as a control, previously evaluated over a 2-year period in a Southern Italy environment. Significant variation for the saponin content was observed among the evaluated genotypes. The total saponin content ranged from 0.10 to 1.80%, with the Q12 genotype showing the lowest value, suggesting the possibility of selecting genotypes sweet to be used in subsequent genetic improvement programs. Based on these results, in fact, it was possible to identify, among the accessions previously selected, particularly suitable for growing in Mediterranean area, some genotypes with high yields of seed (2.5 tha–1, on average), high protein (17%, on average) and fibres (13%, on average) and low content in saponins (0.57%, on average).

Keywords

Quinoa; grain saponin content; genotypes; seed yield.

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Submitted: 2016-02-25 17:11:39
Published: 2016-08-10 16:50:29
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Copyright (c) 2016 Giuditta De Santis, Carmen Maddaluno, Tiziana D’Ambrosio, Agata Rascio, Michele Rinaldi, Jacopo Troisi

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