远红光对玉米叶片叶绿素荧光的影响  

Effects of far infrared on the chlorophyll fluorescence in maize leaves

作　　者：张曦文[1] 刘铁东[2] 徐永[1] 

机构地区：[1]福建农林大学机电工程学院,350002 [2]福建农林大学作物科学学院

出　　处：《福建农业科技》2017年第9期26-31,共6页Fujian Agricultural Science and Technology

基　　金：福建省科技重大专项(2014NZ0002-2);福建省中青年教师教育科技项目(JAT160164)

摘　　要：以玉米杂交种先玉335(X-335)和玉米杂交种郑单958(Z-958)为供试材料,研究远红光对玉米叶片叶绿素荧光的影响,结果表明:远红光环境下,玉米叶片的光合作用所产生的有机物量和叶片胞间CO2浓度均下降,叶片蒸腾速率减弱,叶片气孔导度减小,光合电子传递效率下降,但PSⅡ原初光能转化效率提高,非光化学淬灭系数上升;X-335光化学淬灭系数上升,Z-958下降;两个玉米品种在远红光环境下光系统的功能都下降。In this paper,maize hybrid cultivar "Xianyu 335"(X-335)and hybrid cultivar "Zhengdan 958"(Z-958)were used as materials to study effects of far infrared on chlorophyll fluorescence in maize leaves.The results showed that under far infrared condition,amount of organic material and intercellular CO_2 concentration in the leaf produced by photosynthesis,leaf transpiration rate,leaf stomatal conductance and photosynthetic electron transfer efficiency declined while efficiency of primary conversion of light energy of PSⅡand non-photochemical quenching coefficient rose.Photochemical quenching coefficient of "X-335" rose while that of "Z-958" declined.The photosystem function of both maize cultivars declined under far infrared condition.

关 键 词：玉米 光环境 叶绿素荧光 远红光 

分 类 号：S513[农业科学—作物学]