Nutritional status of people can be improved by enhancing zinc (Zn) and iron (Fe) content in cereals used as staple mainly in poor resource countries. Zinc and Fe were applied through soil and foliage in a study to biofortify wheat grains. Foliar application of both micronutrients increased the growth and grain vigor as compared to soil application and control. Also, foliar application significantly enhanced Zn and Fe concentration in grain pre-dominantly localized in aleurone layer. Exogeneous application of Fe and Zn was found beneficial for plant growth and enhanced Fe and Zn concentrations in grain, however aleurone layer and embryonic region of the grain showed higher accumulations than that in endosperm. Therefore, understanding of physiological and molecular pathways for uptake and localization of Fe and Zn in wheat grains need to be critically examined to improve their concentration in grain to achieve the biofortification targets.
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Kiran, A., Wakeel, A., Sultana, R. et al. Concentration and Localization of Fe and Zn in Wheat Grain as Affected by Its Application to Soil and Foliage. Bull Environ Contam Toxicol 106, 852–858 (2021). https://doi.org/10.1007/s00128-021-03183-x
- Triticum aestivum
- Agronomic biofortification