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. 2018 Mar 14;6:e4442. doi: 10.7717/peerj.4442

Figure 1. Mineral composition of three cultivars of C. quinoa seeds growing at three different locations.

Figure 1

Quantitative multi-elemental analysis was performed using inductively coupled plasma (ICP) spectrometry and the total content of P, K, Ca, Mg, Fe, Na and Zn were determined. Three cultivars (Regalona, Salcedo-INIA and Titicaca) grown at three different locations (Peru, Chile and Spain) were used to evaluate changes in the mineral composition associated with different agroecological conditions. (A–C) Mineral composition of one variety comparing among countries (Red: Chile; Black: Peru; Blue: Spain): (A) Regalona, (B) Salcedo-INIA and (C) Titicaca. (D–E) Mineral composition of seeds from Spain or Chile comparing among varieties (Red: Regalona; Black: Salcedo-INIA; Blue: Titicaca): (D) Chile and (E) Spain. Values are presented as the Mean relative to the maximum and minimum values for each element (n = 4). Asterisks indicate statistical differences at a P < 0.05 (Tukey t-test or Student t-Test when comparing pairs). When more than two samples are compared, colored asterisks indicate the sample that is statistically significant.