农业工程学报2011，Vol.27Issue(10)：107-111,5.DOI:10.3969/j.issn.1002-6819.2011.10.019
延迟荧光光谱F730/F685与植物耐热性的关系
Relationship between F730/F685 ratio of delayed fluorescence spectrum and plant heat resistance
摘要
Abstract
In order to research the relationship between spectral properties of delayed fluorescence and plant heat resistance, three different samples (Bean Jinghuang No.3, Queen's Crape Myrtle Lagelstroemia indica L, maize s5-168) were used as materials to experimentally study on the plant delayed fluorescence emission spectra at elevated temperatures (25-55°C). The maximal values of DF emission spectra at 685nm and 730nm were marked as F685 and F730 respectively. After analyzing the characteristic of temperature response curve of F730/F685 ratio, the cause of the formation of inflexion on the temperature response curve of F730/F685 ratio, and the temperature responses of five chlorophyll fluorescence parameters, it was concluded that DF emission spectra varied with the temperature-stress, and the responses of F730/F685 ratio of DF emission spectra to the temperature for the different samples could be a new and useful judgment to identify and evaluate the heat-resisting property of the samples. Moreover, the temperature inflexion of the temperature response curve of F730/F685 ratio could be a new identification index of plant heat resistance.关键词
植物/叶绿素/光谱分析/延迟荧光/高温胁迫/光谱峰值比Key words
plants/ chlorophyll/ spectrum analysis/ delayed fluorescence/ high temperature-dependence/ peak ratio of spectrum分类
医药卫生引用本文复制引用
李瑛,许文海..延迟荧光光谱F730/F685与植物耐热性的关系[J].农业工程学报,2011,27(10):107-111,5.基金项目
国家自然科学基金项目(60774056) （60774056）
教育部新教师基金(200801511013) （200801511013）
国家科技支撑计划课题(2009BAG 18B03). （2009BAG 18B03）
