南京林业大学学报（自然科学版）2012，Vol.36Issue(2)：59-63,5.
纳米氧化硅对髯毛箬竹光合荧光特性的影响
Effects of nano-silicon dioxide on photosynthetic fluorescence characteristics of Indocalamus barbatus McClure
摘要
Abstract
In order to explore the regulating effects of nano materils on the the growth and development of bamboos, we measured the effects of different concentrations of nano SiO2 (150,300,450 mg/L) on Indocalamus barbatus McClure by foliar spraying. The results showed that compared to control, all treatments of different concentrations of nano SiO2 could increase the gas exchange parameters and chlorophyll fluorescence parameters to some extent during the experiment, such as net photosynthetic rate, transpiration rate, stomatal conductance, PSⅡ potential activity, effective photochemical efficiency , actual photochemical efficiency, electron transport rate and photochemical quench, the optimal concentration of nano-SiO2 was 300 mg/L. Compared to control, the above parameters significantly (p <0. 05) increased 23. 6 % ,34.9 % , 20.4 % ,8.8 % ,7.9 % ,26.6 % ,34. 1 % and 19.3 % respectively alter 21 days, but the intercellular C02 concentrations and PSII maximal photochemical efficiency were not obviously (p >0.05) changed, and the non-photochemical quench was inhibited in the late experiment period. All above results indicated that exogenous nano SiO2 treatment could effectively improve the stomatal conductance of In. barbatus McClure, promote the leaves( function on the absorption, transmission and transformation of light energy, increase the opening degree of PSFJ reaction centers, reduce the antenna dissipation, improve actual photochemical efficiency and electron transport rate of PSII, and then to improve net photosynthetic capacity of In. barbatus MeClure. The improvement of photosynthetic activity of mesophyll cells may be the major factor of nano SiO2 to promote the photosynthetic capacity of In. barbatus McClure.关键词
纳米SiO2/髯毛箬竹/气体交换参数/叶绿素荧光参数Key words
nano SiO2 /Indocalamus barbalus McClure/gas exchange parameters/chlorophyll fluorescence parameters分类
农业科技引用本文复制引用
谢寅峰,李博,陶功胜,张千千,张春霞..纳米氧化硅对髯毛箬竹光合荧光特性的影响[J].南京林业大学学报（自然科学版）,2012,36(2):59-63,5.基金项目
江苏省高校优势学科建设工程资助项目 （）
江苏省高校自然科学基金项目(05KJB220053) （05KJB220053）
