关键词: 玉米, 玉米, 细胞分裂素氧化酶, 克隆, 原核表达载体

Abstract: In order to clarify the effect of yeast selenium as selenium source to improve plant selenium rich ability, pot experiment was conducted to study the effect of absorption and accumulation of organic selenium (Se- Met) of rice after foliar application of organic selenium. The results showed that the absorption and accumulation ability of different plant parts was different after foliar application of organic selenium, the sequence was leaves＞ stems ＞spikes; the accumulation amount of selenium at booting stage was higher than that at seedling stage; the selenium accumulation amount in seed reached the highest at heading stage and reached the lowest at seedling stage; selenium accumulation amount reached the highest in rice husk, which was 1.1 to 4 times as much as that in rice; organic selenium dosage of 120 g/hm2 was the best application amount to improve the accumulation of selenium in seeds. Organic selenium worked as a source of exogenous selenium could meet the demand of rice growth and improve selenium accumulation in seeds.