关键词: 表达, 表达

Abstract: To explore comprehensively rice silicon nutrition mechanism, screening silicon high efficiency rice varieties by comparison yield of 25 main rice varieties in Hainan between low and deficiency silicon condition with pot and field experiment, and investigated the effect of silicon on rice yield factors and silicon uptake characteristic. The results indicated that, there were 10 silicon high efficiency variety, including 4 enduring and 6 no enduring silicon deficiency variety through diversification of yield or straw; the effect of supplying silicon was not identical for number of spike/plant, grain/spike and mass/1000 grain; was not distinct for plant height among majority variety but enhance 3 varieties; and increased for silicon concentration in straw and chaff, although silicon concentration in straw had no distinct among all rice variety at silicon deficiency condition, and that in former was inconsistency to silicon concentration in chaff; supplying silicon more prominently increased silicon concentration in grain of high efficiency rice than that of no sensitivity variety, specially for enduring rice variety. In sum, silicon concentration in shoot organell of silicon high-efficiency rice were more sensitive response to silicon supplying level than that of no sensitivity variety, but there were not identical change to yield factors at the same condition.