红背桂叶片的延迟发光研究  

Research on Delayed Luminescence of Excoecaria Cochinchinnensis Leaves

作　　者：王维江[1] 邢达[2] 谭石慈[2] 韩俊英[3] 

机构地区：[1]广东工业大学应用物理系,广州510090 [2]华南师范大学激光生命科学研究所,广州510631 [3]中山医科大学医学遗传学教研室,广州510089

出　　处：《量子电子学报》2000年第4期310-314,共5页Chinese Journal of Quantum Electronics

摘　　要：采用超弱发光图像探测系统对红背桂叶片及其它一些植物样品进行了延迟发光图像探测。结果表明，延迟发光与生物样品的种类及所处的代谢阶段有关，可提供植物光合作用、细胞分裂和能量转换的重要信息．叶绿素在植物延迟发光中起重要作用，但细胞分裂对延迟发光也有影响．植物经白光诱导后的发光衰减接近双曲线规律，与生物光子的相干理论相吻合．另外，实验结果也能较好地用双指数曲线拟合，表明延迟发光可能来源于植物细胞内两个不同的随机发光系统．Using an ultra-weak bioluminescent image detecting system, the delayed luminescent (DL) images of Excoecaria cochinchinnensis leaves and some other plant species are detected. The results show that the DL can offer the important information of photosynthesis, cell division and energy transformation of plant species. Chlorophyll plays an important role in the plant DL. However cell division also has some influence on DL. The measured photon count rate after light illumination can be approximated by a hyperbolic decay law, which supports coherence theory. Whereas, two-exponential law also accords with measured data, which shows that DL perhaps comes from two photosystems in plant cells and each of them gives a chaotic luminescence after induced by light.

关 键 词：迟延发光 红背桂 植物样品 图像探测系统 

分 类 号：R318.51[医药卫生—生物医学工程]