烟嘧磺隆对糯玉米光合特性和叶绿素荧光参数的影响  

Effect of Herbicide Nicosulfuron on Photosynthesis Traits and Chlorophyll Fluorescence Parameters of Wax Maize

作　　者：胡海军[1] 史振声[1] 吕香玲[1] 于艳杰[1] 郭佳丽[1] 吕颖颖[1] 李致闻[1] 

机构地区：[1]沈阳农业大学特种玉米研究所,沈阳110866

出　　处：《玉米科学》2014年第3期77-80,共4页Journal of Maize Sciences

基　　金："十二五"国家科技支撑计划项目"东北平原南部(辽宁)春玉米水稻持续丰产高效技术集成创新与示范"(2011BAD16B12);辽宁省科技厅重大;重点项目"玉米高产;优质;多抗新品种选育"(011201018)

摘　　要：以沈糯509抗、不抗近等基因系为试材,研究烟嘧磺隆除草剂对玉米光合色素含量、叶片光合特性和叶绿素荧光参数的影响。结果表明,烟嘧磺隆处理使沈糯509抗、不抗近等基因系的叶绿素含量、净光合速率和PSⅡ光化学效率等均不同程度的降低,使胞间CO2浓度和非光化学猝灭系数呈升高趋势,且表现出一定的剂量-效应关系。在供试浓度范围内,抗系各参数变化幅度均小于不抗系,说明抗系具有较强的光合调节机制,用以减轻或消除烟嘧磺隆的胁迫反应。Using Nicosulfuron-resisted and Nicosulfuron-sensitive near-isogenic lines of wax maize Shennuo R-509, S-509 as materials to research photosynthetic pigment contents, photosynthetic traits and chlorophyll fluores- cence parameters within paired near-isogenic lines. The results showed that Nicosulfuron caused the decline of pho- tosynthetic pigment content, photosynthesis rate and primary light energy in leaves of wax maize, but intercellular CO2 concentration and non-photochemical quenching increased gradually. All parameters of R-509 showed little change than S-509. It indicated that R-509 might had photosynthetic regulation mechanism in some degree under herbicide stress, and there was a certain difference between the Nicosulfuron-resisted and Nicosulfuron-sensitive near-isogenic lines in tolerating to herbicide Nicosulfuron stress.

关 键 词：糯玉米 近等基因系 烟嘧磺隆 光合特性 荧光参数 

分 类 号：S513.01[农业科学—作物学]