Variability of factors that affect availability of iron, manganese and zinc in maize lines

Abstract

Deficiencies of some mineral elements are causing serious health problems, which could be prevented by increase of mineral nutrients in food with supplementation, food fortification or plant breeding. From this point, experiment with 78 maize inbred lines was set up to determine maize lines with improved contents of Fe, Zn and Mn, as well as their relations with phytic acid, inorganic phosphorus and ?-carotene, as factors which affect their absorption. Obtained results suggest that investigated maize lines show high variability in concentration of Fe, Mn and Zn, as well as phytic acid (which sustain availability of mineral elements) and ?-carotene (which enables better absorption of mineral element and minimize negative effect of phytic acid). From this point of view, group of genotypes with phytic P ? 3 g kg-1 was interesting. Among them, L2 and L23 are maize lines with relatively high inorganic P, Fe and Zn contents, and together with relatively low ratio between phytic and inorganic P, they could be used as a good source of P, Fe and Zn. On the other hand, L1 and L4 are also maize lines with high inorganic P, ?-carotene and Mn, and favourable ratio between phytic acid and Fe and Zn, what could give them advance as source of Mn in breeding programs. The same maize lines could also be candidates with improved ability for Fe and Zn absorption, what is based on high ?-carotene content. Maize line L14, with relatively high concentration of all three. [Projekat Ministarstva nauke Republike Srbije, br. TR 31068: Improving the quality of maize and soybean by conventional and molecular breeding]

Iron-Zinc Based Genetic Diversity Assessment in Maize (Zea Mays L.) Genotypes

“…Otherwise, phytic acid content related negatively with all the studied plant traits. Results align with the studies of Gregorio (2002), Cakmak et al (2010), andDragicevic et al (2013). Chukwudi et al (2022) andGovindaraj et al (2022) reported a positive association between Fe and Zn content; however, they found a negative correlation among Fe-Zn and yield-related traits in maize (Akinwale and Adewopo, 2016;Guo et al, 2020;Bojtor et al, 2021).…”

Increase of soybean nutritional quality with nonstandard foliar fertilizers

“…Variations in the ratios between phytate, β-carotene and the mineral nutrients could indicate possible bio-availability of the mineral nutrients (Walter Lopez et al, 2002;Dragičević et al, 2013), with increased tendency of availability with decreasing ratio.…”

Alterations in mineral nutrients in soybean grain induced by organo-mineral foliar fertilizers

“…Variations in ratio between phytate (Phy) and β-carotene may indicate possible availability of nutrients [12,23]. This trait is an important parameter for the characterisation of the investigated genotypes.…”