谷秆两用稻201对硒的生物富集作用研究

Bio-enrichment of Selenium in Dual-purpose Rice 201

硒(Se)是人体必须的微量元素,采用40 mg/kg的亚硒酸钠在齐穗期开始喷施谷秆两用稻 201,使大米有机硒含量达0．27 mg/kg左右(P<0．05);同时米糠和高蛋白稻草的有机硒富集水平分别 提高3到4倍(P<0．05);为生产富硒优质米提供依据,为生产富硒食用菌提供了优质原料。

Selenium （Se） is an essential trace element for human body. By treating with sodium selenite （40 mg/kg） at rice heading for eighty percent, dual-purpose rice 201 improved its Se content to 0.27 mg/ kg （p〈0.05） compared with untreated 201 rice. In addition, Se content was enriched for about 3 and 4 times higher in treated rice bran and straw than it in untreated one, respectively （p〈0.05）, which might provide as material for production of Se-enriched edible fungi.