发光学报2011，Vol.32Issue(1)：87-93,7.DOI:10.3788/fgxb20113201.0087
大豆愈伤组织超弱光子辐射的双指数模型
Double-exponential Model of Ultraweak Photon Emission of Soybean Callus
摘要
Abstract
Double-exponential model of ultraweak photon emission of soybean callus was proposed based on the mechanism of ultraweak photon emission in biological system. Treated soybean callus by UV-B radiation (20 μ,W/cm2 ) for 2 h, ultraweak photon emission of soybean callus treated by UV-B for 4 d after was measured. The results show that double-exponentialmodel accurately describes the characteristics of ultraweak photon emission of soybean callus and its changes, delayed luminescence of ultraweak photon emission of soybean callus is composed by both fast and slow phase. Spontaneous luminescence in ultraweak photon emission of soybean callus and some parameters of delayed luminescence such as initial photon number I(0 ), integrated intensity I(T) and decay parameters of delayed luminescence are obtained through analysis of the double-exponential model, the characteristics of ultraweak photon emission of soybean callas can be quantitative expressed by these parameters. The studies also find that there is an excellent positive cerrelation between initial photon number I(0) and integrated intensity I(T) ,and I(0) or I(T) can be used to measure the metabolic intensity of soybean callus. Induced by UV-B radiation(20 μW/cm2) for 2 h,the decay parameter of fast phase in delayed luminescence decreases first and then increases, the change of spontaneous luminescence is opposite, it suggests that fast phase of delayed luminescence is sensitive to the UV-B radiation and membrane lipid poroxidation could be the reason of the drastic change of fast phase in delayed luminescence of soybean callus.关键词
超弱光子辐射/大豆愈伤组织/双指数模型/UV-B辐射Key words
ultrawesk photon emission/ double-exponential model/ soybean callus/ UV-B radiation分类
数理科学引用本文复制引用
习岗,杨运经,李少华,张艳..大豆愈伤组织超弱光子辐射的双指数模型[J].发光学报,2011,32(1):87-93,7.基金项目
国家自然科学基金(50977079) （50977079）
陕西省教育厅专项科研计划(09JK667)资助项目 Project supported by National Natural Science Foundation of China(50977079) （09JK667）
Shaanxi Province Education Department Special Research Project(09JK667) （09JK667）
