粮食作物锌的吸收运转分配和改善子粒锌含量的理论与技术途径

基于前人取得的主要成果，系统分析了从土壤锌有效性到锌在子粒部位的积累主要过程及其控制点，从三方面：1）植株对锌的吸收过程；2）锌在地上部各营养器官间的运转分配过程；3）锌从营养器官向子粒部位的运转过程，总结并提出今后应利用作物锌高效性的种质资源特点，通过传统育种与生物技术方法选育出锌高效积累型品种和合理配套的栽培技术等农艺措施，提高作物子粒锌的含量。

Physiology of zinc uptake partitioning and approaches to increasing zinc density in grains of food crops

The recent research on the mechanisms of Zn accumulation and the relevant approaches to increasing Zn density in grain of food crops was overviewed and discussed.Actually Zn uptake,transport and accumulation in edible portions of seeds were controlled by complex soil and plant factors: 1) Zn uptake from soil; 2) Zn transport and accumulation in nongrain;3) Zn accumulation in grain.Increasing the Zn content and bioavailability in grains could be attainable through agricultural practices,including genetic improvements through traditional plant breeding or molecular biological techniques,and other optimal cultivation practices.