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高产杂交稻功能叶光能吸收、传递与转化特性研究
发表时间：2010-04-15 浏览量：1707 下载量：783
| 全部作者： | 于光辉，陈国祥，江玉珍，苑中原，吕川根，高志萍，韩彪 |
| 作者单位： | 南京师范大学生命科学学院；江苏省农业科学院粮食与作物研究所 |
| 摘 要： | 对生殖生长期两优培九和汕优63功能叶叶绿体的原初光化学反应进行比较研究，为揭示超高产杂交稻高产生理基础提供理论依据。实验利用荧光动力学知识和专业处理软件，在野外条件下对两优培九和汕优63功能叶荧光参数进行测定，评估光能吸收、传递与转换特性，并研究了生殖生长过程杂交稻功能叶叶绿素含量变化、叶绿体能量流动变化和PSⅡ的原初光化学反应。结果表明：相对汕优63，两优培九功能叶单位质量叶绿素的含量高，相对稳定期长，具有较高的chl a/chl b比值。光能吸收与分配方面，两优培九功能叶单位叶面积吸收的光能差异不显著，但单位叶面积上有活性的反应中心数量多，用来还原QA的激发能高，热耗散的能量比例较少，进入电子传递链的能量较高。荧光参数分析发现，两优培九PSⅡ供体侧、受体侧和反应中心结构和状态表现均优于汕优63，说明光能转化为活跃的化学能效率较高。在光能吸收、传递与转换效率上优于汕优63，奠定了两优培九超高产的生理基础。 |
| 关 键 词： | 植物学；生殖生长期；功能叶；原初光化学反应；荧光动力学；PSⅡ供体侧、受体侧和反应中心 |
| Title： | Research of light energy absorption, transmission and conversion characteristics in functional leaves of high-yield hybrid rice |
| Author： | YU Guanghui, CHEN Guoxiang, JIANG Yuzhen, YUAN Zhongyuan, LV Chuangen, GAO Zhiping, HAN Biao |
| Organization： | College of Life Sciences, Nanjing Normal University；Institute of Food and Crops, Jiangsu Academy of Agricultural Sciences |
| Abstract： | To investigate the primary photochemical reaction of chloroplasts in functional leaves of Liangyoupeijiu and Shanyou 63 in the reproductive growth stage, this paper provides theoretical insights into physiological basis for high yield of the super high-yield hybrid rice. Through fluorescence dynamics knowledge and professional process software, the paper measured and analyzed chlorophyll fluorescence parameters of functional leaves of Liangyoupeijiu and Shanyou 63, and assessed characteristics of solar energy absorption, transmission and conversion. In this experiment, changes of chlorophyll content, chloroplast energy flow，the structure and status of the primary photochemical reaction and the photosynthetic apparatus in PS Ⅱ of functional leaves were studied. Be compared with Shanyou 63, chlorophyll content per unit mass in functional leaves of Liangyoupeijiu was higher, and it had a relative long period of stability and higher chla/chlb ratio. In the term of light absorption and distribution, there was no significant difference in light absorption per unit leaf area of functional leaves, but the number of active reaction centers on the unit leaf area was more than Shanyou 63, the excitation energy of QA used to restore in a high form, the energy of heat dissipation was relatively fewer, the energy transferred into the electron transport chain was higher. Fluorescence analysis showed that structures and status of the body side, the receptor side and the reaction center in PS Ⅱ performed better than Shanyou 63, indicated that Liangyoupeijiu had a higher efficient in the transforming light energy into chemical energy. Having higher light energy absorption, transmission and conversion efficiency than Shanyou 63, Liangyoupeijiu established a physiological basis of super high yield. |
| Key words： | botany; reproductive growth stage; functional leaves; primary photochemical reaction; fluorescence dynamics; the body side, the receptor side and the reaction center of PSⅡ |
| 发表期数： | 2010年4月第7期 |
| 引用格式： | 于光辉，陈国祥，江玉珍，等. 高产杂交稻功能叶光能吸收、传递与转化特性研究[J]. 中国科技论文在线精品论文，2010，3（7）：699-706. |
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