小麦籽粒微量元素含量的研究进展

以禾谷类作物为主食引起的人体摄取必需微量元素(特别是Fe和Zn)不足,已对现代社会和谐发展造成沉重的经济负担和安全隐患。小麦(Triticum aestivumL.)是中国和全球大多数人主要的食物和矿质元素来源。小麦籽粒中Zn、Fe含量普遍较低,已引起国内外学者们的高度关注。本文综述了小麦籽粒微量元素含量器官间、基因型间的差异及其影响因素和相关性状研究进展,介绍了小麦籽粒吸收和富集微量元素的生理与遗传基础,展望了提高小麦籽粒微量元素的研究内容和方向。

Progress in Research of Micronutrients Content in Wheat Grain

Lower content or deficiencies of bioavailable iron(Fe),zinc (Zn) and other essential micronutrients in human food,causing mineral malnutrition or "hidden hungry",have affected a large proportion of the world population's health,and potentially threaten to national economic development and social safety.Wheat is one of the important staple crops as the resources of both foods and minerals for most people of the world.However,lower content of Fe and Zn in wheat grains has caused great concerns to international scientists.This review emphasized on the progress of traits,influence factors and mechanisms of wheat germplasm with high micronutrient content in grains,and the molecular,physiological and genetic mechanism of micronutrient enrichment.Research directions including fertilization,biofortification and decreasing phytate were discussed,to increase micronutrient contents and their bioavailability for wheat grain and concerns for economical and sustainable strategies.