Influence Of Silicon On The Physiological Effect Of Red Globe Grape And Shifuluosha Grape

Influence of different silicon on the physiological effect and microstructure of Red Globe leaf was studied including nanometric silicate ,sodium silicon and TEOS sprayed on the leaf surface .Nanometric silicate ,sodium silicon ,TEOS and biological silicon respectively concentration added into GS culture media on the growth, physiology and biochemistry of test-tube plantlet of Red Globe and Shifuluosha. The results were as follows: 1,The chlorophyll content increased significantly in leaf of Red Globe when 50 mg/L and 100mg/L silicon was used,that of 200mg/L was lower than CK. 2,In leaf of Red Globe Grape the permeability of cell membrane decreased after silicon was applied,among which 100mg/L silicon had the best effect, and silicon from different chemicals had significant variance.3,Silicon influenced MDA content significantly. As concentrations of silicon increased, MDA content first declined then ascended. 4,Silicon significantly increased the activity of POD, treatments of sodium silicate were better than the others, and 50 mg/L was best. 5,Silicons could raise silicon content in leaf of Red Globe, of which sodium silicate was best. Leaf back had the highest content of silicon. And silicon concentrated around stoma, which could result in silicon layer.6,Silicon significantly increased height, average of root number and length of root of test tube plantlet, with sodium silicate and biological silicon best.7,The chlorophyll content could be improved by the treatments of different silicon concentrations, with 100 mg/L best. MDA content of test tube plantlet increased with silicon concentration. The treatments of different concentration of silicon significantly lowered permeability of the cell membrane, with 100mg/L best.8,The treatments of three concentrations of silicon could improve POD,SOD activity in test tube plantlets, and POD,SOD activity increased with concentration of silicon,of which 200mg/L was best. 9,The activity of CAT in treatments of sodium silicate was different significantly from that by nanometric silicon and biological silicon. The activity of CAT ascended with silicon concentration, but declined in 200mg/L. 10,The root activity in the treatment of nanometric silicon was significantly different from those with biological silicon, sodium silicate and TEOS. The treatments of different concentrations of silicon enhanced root activity, and increased with concentration of silicon.