Study on the distribution and combined of selenium in cos lettuce

The distribution and combined forms of selenium in cos lettuce with adding selenium plant in field were studied It was found that cos lettuce could enrich selenium through the leaves of absorbing selenite and transform selenite into various organic selenium by mothballing Nucleic polysaccharide and protein combined selenium were main form the contents of combined selenium hold 33 4%,41 4%,21 6% in total Se All big biological molecular combined selenium hold 70% in total selenium