FOLIAR FEEDING WITH ZINC AS A BIOFORTIFICATION STRATEGY IN MAIZE

Authors

  • ANA STELLA FREIRE GONÇALVES Universidade Estadual Paulista “Júlio de Mesquita Filho" (UNESP)
  • RENZO GARCIA VON PINHO Universidade Federal de Lavras/UFLA
  • LUIZ ROBERTO GUIMARÃES GUILHERME Universidade Federal de Lavras/UFLA
  • JOSÉ EDUARDO BORGES FURTADO Universidade Federal de Lavras/UFLA
  • FRANCIELLY DE CÁSSIA PEREIRA Universidade Federal de Lavras/UFLA

DOI:

https://doi.org/10.18512/1980-6477/rbms.v18n2p281-289

Keywords:

Zea mays L, zinc deficiency, micronutrients, food safety, plant nutrition.

Abstract

Human zinc malnutrition is a concern in the contemporary scenario. Ranked among the serious micronutrient deficiencies and considered a major cause of child mortality, especially in developing countries. Cereals, such as maize (Zea mays L.), food source in these countries, show low zinc concentration. In view of this, biofortification has been shown promise to increase the nutrient content in staple foods and to improve their nutritional quality. The aim of this study was to evaluate the potential of maize genotypes in relation to yield and zinc concentration in grains and leaves as a function of zinc sulfate doses in two growing seasons. A total of 17 commercial hybrids were evaluated in three doses (0, 5, and 10g L-1 ha-1). The zinc concentration was quantified by acid digestion, followed by atomic absorption spectrophotometer analysis. Any change was observed in grain yield as a function of the doses. Higher doses applied near flowering resulted in higher concentrations of the micronutrient in the grains. However, the concentrations in the grains were, on average, below the value established by the Harvest Plus biofortification program. The results provide information for the selection of genotypes with zinc uptake potential aiming at food safety through agronomic biofortification.

Author Biography

ANA STELLA FREIRE GONÇALVES, Universidade Estadual Paulista “Júlio de Mesquita Filho" (UNESP)

Agrônoma e Mestre em Fitotecnia pela Universidade Federal de Lavras (UFLA); doutoranda em Fitotecnia no Departamento de Produção e Melhoramento Vegetal, pela UNESP Botucatu.

Published

2019-12-19

How to Cite

GONÇALVES, A. S. F., VON PINHO, R. G., GUIMARÃES GUILHERME, L. R., BORGES FURTADO, J. E., & PEREIRA, F. D. C. (2019). FOLIAR FEEDING WITH ZINC AS A BIOFORTIFICATION STRATEGY IN MAIZE. REVISTA BRASILEIRA DE MILHO E SORGO, 18(2), 281–289. https://doi.org/10.18512/1980-6477/rbms.v18n2p281-289

Issue

Section

Scientific Paper

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