Zinc Application Enhances Grain Zinc Density In Genetically-zinc-biofortified Wheat Grown On A Low-zinc Calcareous Soil

Shahid Hussain*, Muhammad Qaswar, Faraz Ahmad

Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan (Pakistan), Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing (China), Soil and Water Testing Laboratory, Sargodha (Pakistan)

Abstract

Human zinc (Zn) deficiency is a worldwide problem, especially in developing countries due to the prevalence of cereals in the diet. Among different alleviation strategies, genetic Zn biofortification is considered a sustainable approach. However, it may depend on Zn availability from soils. We grew Zincol-16 (genetically-Zn-biofortified wheat) and Faisalabad-08 (widely grown standard wheat) in pots with (8 mg kg−1) or without Zn application. The cultivars were grown in a low-Zn calcareous soil. The grain yield of both cultivars was significantly (P≤0.05) increased with that without Zn application. As compared to Faisalabad-08, Zincol-16 had 23 and 41% more grain Zn concentration respectively at control and applied rate of Zn. Faisalabad-08 accumulated about 18% more grain Zn concentration with Zn than Zincol-16 without Zn application. A near target level of grain Zn concentration (36 mg kg−1) was achieved in Zincol-16 only with Zn fertilisation. Over all, the findings clearly signify the importance of agronomic Zn biofortification of genetically Zn-biofortified wheat grown on a low-Zn calcareous soil.

Keywords

Agronomic or genetic, Grain zinc, wheat grain, Zinc biofortification

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ISSN: 2184-0261