CO_2浓度倍增对谷子拔节期和灌浆期光合色素含量和PSⅡ功能的影响  

EFFECTS OF DOUBLED CO_2 CONCENTRATION ON THE CONTENT OF PHOTOSYNTHETIC PIGMENTS AND PSI FUNCTIONS OF JOINTING AND GROUTING IN SETARIA ITALICA

作　　者：卢从明[1] 张其德[1] 冯丽洁[1] 匡廷云[1] 郭建平[2] 王春乙[2] 

机构地区：[1]中国科学院植物研究所,北京100093 [2]中国气象科学研究院农业气象研究中心,北京100081

出　　处：《Acta Botanica Sinica》1997年第9期874-878,共5页Acta Botanica Sinica（植物学报：英文版）

基　　金：国家自然科学基金

摘　　要：研究了CO_2浓度倍增对谷子(Setaria italica (L.)Beauv.)叶片单位鲜重和单位叶面积叶绿素(Chl)和类胡萝卜素(Car)的含量以及PSⅡ功能的影响。结果表明,CO_2浓度倍增能提高拔节期成熟叶片和灌浆期成熟旗叶的Chl和Car的含量,并且能提高这两种叶片PSⅡ反应中心开放部分的比例。然而拔节期叶片和灌浆期旗叶的qN值和PSⅡ总的光化学量子产量,以及 F_v/F_o、F_v/F_m和F_d/F_s的值对CO_2浓度倍增的响应不同,表明CO_2浓度倍增对拔节期叶片光合功能的改善优于灌浆期的旗叶。Effects of doubled CO2 on the contents of chlorophyll and carotenoid per unit fresh weight and per unit area of leaves and PS II functions of Setaria italica (L.) Beauv. were studied. The experimental results showed that the contents of chlorophyll and carotenoid, the proportion of opened PS II reaction center from the mature leaves at jointing stage and the mature flag leaves at grouting stage were raised with CO2 enrichment. However, qN value and the overall photochemical quantum yield of PS II , as well as the FV/FO, Fv/Fm and Fd/Fs in the above-mentioned leaves both at the jointing and grouting stage in response to doubled CO2 were different. The final outcome showed that the photosynthetic functions from the leaves at jointing stage improved by doubled CO2 were better than those from the flag leaves at grouting stage.

关 键 词：谷子 CO2浓度倍增 光系统Ⅱ 生长期 光合色素 

分 类 号：S515.01[农业科学—作物学]