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不同化控剂对春玉米根系伤流液特性的影响及其激素调控机制
Effects of Mixed Compound of DCPTA and ETH on Root Bleeding Sap Performance of Spring Maize and Hormone Regulation Mechanism
投稿时间:2017-07-08  
中文关键词:春玉米  根系伤流液  内源激素
英文关键词:Spring maize  Root bleeding sap  Endogenous hormone
基金项目:国家重点研发计划项目(2016YFD0300103)、黑龙江省青年科学基金项目(QC2015032)、黑龙江省博士后科研启动金项目(LBH-Q16031)、哈尔滨市应用技术研究与开发项目(2015RQQXJ046)、东北农业大学"学术骨干"项目
作者单位
樊海潮 东北农业大学农学院, 哈尔滨 150030 
顾万荣 东北农业大学农学院, 哈尔滨 150030 
杨德光 东北农业大学农学院, 哈尔滨 150030 
张倩 东北农业大学农学院, 哈尔滨 150030 
李彩凤 东北农业大学农学院, 哈尔滨 150030 
尉菊萍 东北农业大学农学院, 哈尔滨 150030 
李文龙 东北农业大学农学院, 哈尔滨 150030 
李晶 东北农业大学农学院, 哈尔滨 150030 
魏湜 东北农业大学农学院, 哈尔滨 150030 
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中文摘要:
      以东农253为试验材料,在玉米6叶期喷施吨田宝(DTB)、DCPTA和ETH复配剂(KP)两种化控剂,对照为清水。结果表明,DTB和KP均可提高春玉米根系伤流量,特别是生育后期的流量,分别比对照提高了72.34%和129.78%;提高了伤流液中矿质元素的流量,氨基酸的总流量也得到相应的提高,特别是丝氨酸的流量。内源激素IAA、CTK和ABA流量在各时期均有增加;GA流量在乳熟期得到显著提高,拔节期、抽雄吐丝期和灌浆初期均低于对照,之后得到显著提高。对内源激素比值均有不同程度的影响,改变了激素间的平衡水平;提高了行粒数和百粒重,产量分别比对照提高了13.89%和21.06%。相关性分析表明,玉米根系伤流量及其组分与产量密切相关,表明化控剂具有调控根系伤流量、矿质元素和内源激素流量的作用,对促进地上部生长发育和产量的形成有重要作用。
英文摘要:
      Two kinds of chemical regulators(DTB and KP) were sprayed on Dongnong253 at the 6-leaf stage, and the control was water. The results showed that the total volume of roots bleeding sap, especially in the later growth stages, and the mineral nutrients and amino acid especially Ser in the root bleeding sap were increased by the treatment of Duntianbao and KP. Under the treatment of Duntianbao and KP, the total volume of roots bleeding sap in the later growth stages was 72.34% and 129.78% higher than that of the control. The content of IAA, CTK and ABA were also promoted in every stage. Whereas the content of GA was significantly improved at the milk stage, and lower than that of control at jointing, anthesis silking and filling stages, which was significantly increased later. Chemical regulators had different effects on the ratio of endogenous hormones and change the balance of hormones. In addition, the use of chemical regulators increased the grain number per row and 100-grain weight, and finally improved the yield. Compared with the control, the actual yield increased by 13.89% and 21.06%, respectively. The correlation analysis showed that, the root bleeding sap and its components were closely related to the yield, indicating that chemical regulators had effects of regulating root bleeding sap, mineral elements and endogenous hormones, which playing an important role in promoting the growth and development of shoots.
樊海潮,顾万荣,杨德光,张倩,李彩凤,尉菊萍,李文龙,李晶,魏湜.不同化控剂对春玉米根系伤流液特性的影响及其激素调控机制[J].玉米科学,2018,26(1):56~63
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