Mineral content of sorghum genotypes and the influence of water stress

• Published in: Food chemistry Vol. 214; pp. 400 - 405
• Main Authors: Paiva, Caroline Liboreiro, Queiroz, Valéria Aparecida Vieira, Simeone, Maria Lúcia Ferreira, Schaffert, Robert Eugene, de Oliveira, Antônio Carlos, da Silva, Camila Santana
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.01.2017
• Subjects: Dehydration; Desiccation; Drought stress; Edible Grain - chemistry; Edible Grain - genetics; Genetic variability; Genotype; Mineral nutrients; Minerals - analysis; Sorghum - chemistry; Sorghum - genetics; Sorghum bicolor (L.) Moench; Sorghum bicolor (L.) Moench; Embrapa; Genetic variability; ICRISAT; ANOVA; WthWS; IGD; Drought stress; USDA; WoWS; Mineral nutrients
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2016.07.067

•The mineral content of 100 diverse sorghum genotypes were evaluated.•Genotypes presented high variability for P, K, Ca, Mg, S, Cu, Fe, Mn and Zn.•Water stress decreased Mn, P, Mg and S contents in 100, 96, 93 and 56% of genotypes.•2% of the genotypes were classified as excellent sources of Fe and 25% of Zn.•These genotypes may be used in biofortification programs to reduce mineral deficiency. Sorghum is a source of several minerals whose content may vary depending on the genotype and the production environment. The objective of this study was to screen sorghum genotypes for mineral content and to investigate the effect of water stress on it. A large variability was observed in the mineral content of 100 sorghum genotypes grown in environments without (WoWS) and with water stress (WthWS). The water stress decreased Mn, P, Mg and S contents in 100, 96, 93 and 56% of genotypes, respectively. The genotypes and other factors seemed to have more impact than water stress on K, Ca, Cu, Fe and Zn levels. In 100 sorghum genotypes, 2 were classified as excellent sources of Fe and 25 of Zn, in both environments. The best two genotypes to Fe content were SC21 and SC655 and to Zn were SC320 and SHAN-QUI-RED which showed great potential for use in biofortification.