Zn distribution and bioavailability in whole grain and grain fractions of winter wheat as affected by applications of soil N and foliar Zn combined with N or P |
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| Institution: | 1. College of Natural Resources and Environment, Northwest A&F University, South Campus of Northwest A&F University, No 3, Taicheng Road, Yangling 712100, Shaanxi, China;2. Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China;1. Genetics of Prokaryotes, Faculty of Biology, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany;2. Center for Biotechnology (CeBiTec), Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany;3. Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul. Av. Bento Gonçalves, 9500, Caixa Postal 15.053, 91501-970 Porto Alegre, RS, Brazil;1. Department of Agronomy and Plant Breeding, Campus of Agriculture and Natural Resources, Razi University, 6715685438 Kermanshah, Iran;2. Seed and Plant Improvement Department, Kermanshah Agriculture and Natural Resources Research Centre, 6715848161 Kermanshah, Iran;3. Campus of Agriculture and Natural Resources, Razi University, 6715685438 Kermanshah, Iran;1. College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China;2. Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou, 510642, China;1. College of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Burdwan Sadar 713101, West Bengal, India;2. Directorate of Research, Bidhan Chandra Krishi Viswavidyalaya, Kalyani 741235, West Bengal, India;3. Dr. Kalam Agricultural College, Bihar Agricultural University, Bihar 855107, India;4. Hebrew University of Jerusalem, Rehovot 760100, Israel;5. School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA 6150, Australia |
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| Abstract: | A two-year field experiment was conducted to investigate the effects of foliar Zn combined with N or P on Zn concentration and bioavailability in wheat grain and its milling fractions under different soil N levels. At maturity, grains were harvested and fractionated into flour and bran for nutrient analysis. Both high soil N supply and foliar Zn-enriched fertilizer applications greatly increased Zn concentration and bioavailability in both whole grain and grain fractions. Compared with foliar Zn alone, foliar Zn combined with N increased Zn concentration and bioavailability, whereas foliar Zn combined with P decreased Zn concentration and bioavailability. However, foliar Zn combined with P slightly increased the protein concentration compared to foliar Zn alone. Protein concentration significantly increased, whereas phytate concentration decreased, in whole grain and flour, both in soil N and foliar Zn-enriched N treatments. Therefore, foliar Zn plus N (with appropriate soil N management) may be a promising strategy for addressing dietary Zn micronutrient deficiencies, especially in countries where flour is a significant component of the daily diet. |
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| Keywords: | Zn Foliar application Wheat grain Milling fraction |
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