Key Laboratory of Plant-Soil Interactions, Ministry of Education, Center for Resources, Environment and Food Security , China Agricultural University , Beijing 100193 , PR China.
Pakistan Academy of Sciences , 44000 Islamabad , Pakistan.
J Agric Food Chem. 2019 Jul 24;67(29):8096-8106. doi: 10.1021/acs.jafc.9b01829. Epub 2019 Jul 15.
Field experiments were conducted on wheat to study the effects of foliar-applied iodine(I) alone, Zn (zinc) alone, and a micronutrient cocktail solution containing I, Zn, Se (selenium), and Fe (iron) on grain yield and grain concentrations of micronutrients. Plants were grown over 2 years in China, India, Mexico, Pakistan, South Africa, and Turkey. Grain-Zn was increased from 28.6 mg kg to 46.0 mg kg with Zn-spray and 47.1 mg kg with micronutrient cocktail spray. Foliar-applied I and micronutrient cocktail increased grain I from 24 μg kg to 361 μg kg and 249 μg kg, respectively. Micronutrient cocktail also increased grain-Se from 90 μg kg to 338 μg kg in all countries. Average increase in grain-Fe by micronutrient cocktail solution was about 12%. The results obtained demonstrated that foliar application of a cocktail micronutrient solution represents an effective strategy to biofortify wheat simultaneously with Zn, I, Se and partly with Fe without yield trade-off in wheat.
在小麦上进行了田间试验，以研究单独叶面喷施碘（I）、锌（Zn）以及含有 I、Zn、硒（Se）和铁（Fe）的微量元素混合液对籽粒产量和籽粒中微量元素浓度的影响。这些植物在中国、印度、墨西哥、巴基斯坦、南非和土耳其种植了两年。用 Zn 喷雾将籽粒-Zn 从 28.6mg/kg 增加到 46.0mg/kg，用微量元素混合液喷雾将籽粒-Zn 增加到 47.1mg/kg。叶面喷施 I 和微量元素混合液使籽粒中的 I 分别增加到 24μg/kg 和 361μg/kg 和 249μg/kg。微量元素混合液还使所有国家的籽粒-Se 从 90μg/kg 增加到 338μg/kg。微量元素混合液使籽粒-Fe 的平均增加量约为 12%。结果表明，叶面喷施微量元素混合液是一种有效的策略，可以在不牺牲产量的情况下，同时对小麦进行生物强化，增加 Zn、I、Se 和部分 Fe。
