干旱条件下喷施独脚金内酯对小麦光合特性、抗氧化能力和产量的影响  

Effects of Spraying Strigolactone on Photosynthetic Characteristics,Antioxidant Capacity and Yield of Wheat under Drought Condition

作　　者：方保停[1] 李向东[1] 王汉芳[1] 岳俊芹[1] 邵运辉[1] 张德奇[1] 杨程[1] 秦峰[1] FANG Baoting;LI Xiangdong;WANG Hanfang;YUE Junqin;SHAO Yunhui;ZHANG Deqi;YANG Cheng;QIN Feng(Wheat Research Institute,Henan Academy of Agricultural Sciences/National Engineering Laboratory for Wheat/Henan Key Laboratory of Wheat Biology/Key Laboratory of Wheat Biology and Genetics and Breeding in Central Huang-Huai Region,Ministry of Agriculture/Scientific Observing and Experimental Station of Crop Cultivation in Central Plain,Ministry of Agriculture,Zhengzhou 450002,China)

机构地区：[1]河南省农业科学院小麦研究所/小麦国家工程实验室/河南省小麦生物学重点实验室/农业部黄淮中部小麦生物学与遗传育种重点实验室/农业部中原地区作物栽培科学观测实验站,河南郑州450002

出　　处：《河南农业科学》2021年第6期37-43,共7页Journal of Henan Agricultural Sciences

基　　金：河南省重点研发与科技推广专项(212102110299);国家重点研发计划项目(2016YFD0300404,2018YFD0300700)。

摘　　要：干旱条件下,在小麦开花初期叶面喷施独脚金内酯类似物(GR24),研究干旱条件下独脚金内酯对小麦叶片光合特性、抗氧化能力和产量的影响,为干旱条件下小麦的生产管理提供理论与技术支撑。结果表明,在干旱条件下,喷施独脚金内酯总体上可提高小麦旗叶的叶绿素含量、净光合速率、胞间CO_(2)浓度、超氧化物歧化酶活性、过氧化氢酶活性、可溶性蛋白含量,降低小麦旗叶的气孔导度、蒸腾速率、丙二醛及脱落酸含量,提高籽粒千粒质量和产量,产量提高幅度为5.7%~7.4%。In order to provide theoretical and technical support for wheat production management under drought condition,the strigolactone analog GR24 was sprayed on the leaf of wheat at the early flowering stage,and the effects of spraying strigolactone on photosynthetic characteristics,antioxidant capacity and yield of wheat under drought condition were studied.The results showed that,under drought condition,spraying GR24 could generally improve the flag leaf chlorophyll content,net photosynthetic rate,intercellular CO_(2) concentration,superoxide dismutase activity,catalase activity and soluble protein content,decrease stomatal conductance,transpiration rate,malondialdehyde content and abscisic acid content,and increase the thousand-grain weight and yield with the increase rate of 5.7%—7.4%.

关 键 词：小麦 干旱 独脚金内酯 产量 光合特性 抗氧化能力 

分 类 号：S512.1[农业科学—作物学]