水稻对硒的生物富集分布

以常规早稻为样本，采用盆栽、亚硒酸钠供硒，原子吸收光度法检测．研究了水稻对硒的生物富集分布，结果显示：水稻对硒有一定的富集和较高的有机转化能力，水稻从土壤环境中吸收富集的硒大部分被转化成有机态，积累分布于全株，成熟时各器官中硒的分布依次为：根＞剑叶＞茎＞叶片＞（不含剑叶）＞叶鞘＞穗；水溶性生物大分子中硒的分布为：蛋白质＞核酸＞多糖；硒在蛋白质组分中的分布为：谷蛋白＞球蛋白＞清蛋白＞醇溶蛋白．说明植物所吸收的硒旺盛的参与了其新陈代谢

Studies of the Selenium Bio accumulation and Distribution in Rice

The accumulation and distribution of in rice was studied with atomic absorption method.The results are as follows:The rice could bio accumulated and transformed into organ strongly for selenium.The most part of the selenium absorbed from soil was converted into organic form and distributed to a whole plant.The distribution of selenium in organs are root>flag leaf>stem>blade>leaf sheath>ear.The selenium content are Se protein>Se nucleic>Se polysaccharide in soluble biological macromolecules.The selenium content in different types of protein are gluletin>globulin>albumin>prolamine.