Synthesis of Selenium Materials and Their Effects on Wheat Seed Germination and Root Formation
In order to investigate effects of selenium-containing nanomaterials on wheat seed germination and growth,three this kind of nanomaterials were prepared:Se-Ni(selenium mass fraction 71.50%),Se-Co(selenium mass fraction 68.46%),Se-Co-Ni(selenium mass fraction 66.88%),and they were applied as external stimuli to wheat seeds with germination and rooting of wheat seeds measured.The results showed that compared with the control treatment group(water),the promotion rates of wheat taproots by Se-Ni and Se-Co at a concentration of 50 mg/L were 6.31%and 5.47%,respectively,demonstrating that the two materials could promote wheat seed germination,while Se-Co-Ni inhibited the growth of wheat taproots.Therefore,it can be concluded that the higher the selenium content in nanomaterials,the greater the promoting effect on wheat seed germination and rooting.The submicroscopic structure of wheat seed root tips indicated that selenium's effects on the seed endophytic tissue depended on its content in nanoma-terials.It is of great significance to expand the application of nanomaterials in the agricultural field.
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