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Selection of common bean cultivars for the biofortification of iron, zinc, copper and manganese

Abstract

Bean biofortification is a technique that aims to increase nutrient and vitamin content in grains, which is an excellent strategy to overcome the problem of food malnutrition. The objectives of this project will be to select commercial cultivars of bean for biofortification of the grain; quantify the levels of iron, zinc, copper, manganese and protein; evaluate genotype x environment interaction and to verify how the micronutrients absorption occurs through bioassays. For this purpose, fourteen commercial bean cultivars of different grain groups and two commercial controls will be evaluated at one sowing times (water) in Campinas, Votuporanga e Mococa, SP, Brazil, for the following characteristics: leaf area (AF); dry mass of the aerial part (MS); iron content (TFe), zinc (TZn), copper (TCu) and manganese (TMn) and the bioaccessibility of micronutrients. The genotypes that present the highest levels of iron will be submitted to bioaccessibility of the minerals in order to verify the absorption of these minerals in the human body. The experimental design used will be in randomized blocks, with three replications. Each plot consists of four rows will be 4 m in length. The data of the tests will be submitted to the analysis of variance and Pearson correlation will be performed among the evaluated characters to allow an indirect selection. For the identification of the cultivars with higher nutrient contents, the Scott and Knott Test will be used at 5% probability. (AU)

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