外源Se对农作物籽实中Se的化学形态及其品质的影响

Influence of supplemented selenium on chemical forms of selenium in crop seeds and their quality.

本文以喷Se、施Se作为外源Se,将作物籽实中的Se分为水溶态、K_2SO_4可提态、NaOH可提态、残余态4种形态。结论认为NaOH可提态Se、水溶态Se为作物籽实中Se的主要存在形态,其中Se(Ⅵ)在各形态Se中占有一定比例,并随外源Se的增加而变化。同时,外源Se可改变作物体内各组分Se的比例,并使大部分氨基酸的含量有所增加,进而对其遗传特性可能带来影响。

Supplemented selenium in seeds can be classified as water soluble, K_2SO_4 extractable, NaOH extractable and non-extractable forms, and the main ones are NaOH extractable and water soluble Se. Se (Ⅵ) occupies a certain proportion in various forms of Se and varies with increasing supple mented Se. The proportion of various forms of Se in crop seeds is varied with supplement of Se, which can increase the amino acid content in seed and may influence its hereditary characteristics.