Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Combined Selenium and Zinc Biofortification of Bread Making Wheat under Mediterranean Conditions

Version 1 : Received: 14 May 2021 / Approved: 17 May 2021 / Online: 17 May 2021 (07:54:59 CEST)

A peer-reviewed article of this Preprint also exists.

Reynolds-Marzal, D.; Rivera-Martin, A.; Santamaria, O.; Poblaciones, M.J. Combined Selenium and Zinc Biofortification of Bread-Making Wheat under Mediterranean Conditions. Plants 2021, 10, 1209. Reynolds-Marzal, D.; Rivera-Martin, A.; Santamaria, O.; Poblaciones, M.J. Combined Selenium and Zinc Biofortification of Bread-Making Wheat under Mediterranean Conditions. Plants 2021, 10, 1209.

Journal reference: Plants 2021, 10, 1209
DOI: 10.3390/plants10061209

Abstract

Millions of people worldwide have an inadequate intake of selenium (Se) and zinc (Zn), and agronomic biofortification may minimise these problems. To evaluate the efficacy of combined foliar Se and Zn fertilisation in bread making wheat (Triticum aestivum L.), foliar Se (as NaSeO4) and soil and foliar Zn applications (as ZnSO4·7H2O) were tested individually and in all combinations. A 2-year field experiment was established in southern Spain under semiarid Mediterranean conditions, by following a split-split-plot design. The study year (2017/2018, 2018/2019) was considered as the main-plot factor, soil Zn application (50 kg Zn ha-1, nil Zn) as a subplot factor, and foliar application (nil, 10 g Se ha-1, 8 kg Zn ha-1, 10 g Se ha-1 + 8 kg Zn ha-1) as a sub-subplot factor. The best treatment to increase both Zn and Se concentration in both straw, 12.3- and 2.7-fold respectively, and grain, 1.2- and 4.1-fold respectively was the combined foliar application of Zn and Se. This combined Zn and Se application also increased on average the yield of grain, main product of this crop, by almost 26%. Therefore, bread-making wheat seems to be a very suitable crop to be used in biofortification programs with Zn and Se to alleviate their deficiency in both, people when using its grain and livestock when using its straw.

Subject Areas

sodium selenate; zinc sulfate; cereal; rainfed conditions; forage yield

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