河南农业科学 ›› 2021, Vol. 50 ›› Issue (8): 26-35.DOI: 10.15933/j.cnki.1004-3268.2021.08.004

• 作物栽培·遗传育种 • 上一篇    下一篇

喷施炭吸附聚谷氨酸对干旱胁迫下玉米幼苗生长的缓解效应

党永富1,曹丽茹2,鲁晓民2,党尊1,邱天1,段恩忠1,邱军政1,田云峰3   

  1. (1. 河南远东生物工程有限公司,河南周口466000;2. 河南省农业科学院粮食作物研究所,河南郑州450002;3. 河南省农业科学院科研管理处,河南郑州450002)
  • 收稿日期:2021-01-27 出版日期:2021-08-15 发布日期:2021-09-16
  • 通讯作者: 田云峰(1964-),男,河南扶沟人,研究员,主要从事作物栽培研究。E-mail:nkytyf@126.com
  • 作者简介:党永富(1966-),男,河南商水人,教授,主要从事农田土壤污染防治和有机肥研发工作。E-mail:naian@126.com。 曹丽茹为同等贡献作者
  • 基金资助:
    中国博士后科学基金项目(2020M682299)

Alleviating Effect of Spraying Carbon‑Adsorbed Polyglutamic Acid on Growth of Maize Seedling under Drought Stress

DANG Yongfu1,CAO Liru2,LU Xiaomin2,DANG Zun1,QIU Tian1,DUAN Enzhong1,QIU Junzheng1,TIAN Yunfeng3   

  1. (1. Henan Yuandong Biotechnology Limited Company,Zhoukou 466000,China;2. Cereal Crops Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;3. Scientific Research Management Division,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
  • Received:2021-01-27 Published:2021-08-15 Online:2021-09-16

摘要: 以郑单958、郑单6122和郑单819为试验材料,在玉米苗期干旱胁迫后分别喷施清水和炭吸附聚谷氨酸,研究炭吸附聚谷氨酸对干旱胁迫下玉米幼苗形态、生理生化方面的影响,以期为玉米抗旱高产栽培提供新方法。结果显示,喷施炭吸附聚谷氨酸总体显著提高了干旱胁迫下玉米根长、根表面积、根体积、株高、叶面积、地上和地下部干质量及根冠比,显著提高了叶片的相对含水量、叶绿素含量、Fv/Fm、可溶性蛋白含量及超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性。主成分分析显示,叶片相对含水量、叶绿素含量和可溶性蛋白含量是喷施炭吸附聚谷氨酸缓解干旱胁迫对玉米造成伤害的关键指标。灰色关联分析显示,叶绿素含量、根冠比、Fv/Fm、POD和SOD活性均与总干质量有较高的关联系数,分别为0.566 4、0.454 9、0.449 1、0.429 9和0.418 2。综上所述,炭吸附聚谷氨酸增强了玉米苗期对干旱胁迫的耐受性,可作为干旱胁迫的缓解剂。

关键词: 炭吸附聚谷氨酸, 玉米, 苗期, 干旱, 缓解剂

Abstract: Zhengdan 958,Zhengdan 6122 and Zhengdan 819 were used as test materials,after drought stress,water and carbon‑adsorbed polyglutamic acid were sprayed on maize seedlings respectively,and the effects of carbon‑adsorbed polyglutamic acid on the morphology,physiology and biochemistry of maize seedlings under drought stress were studied. The results showed that the root length,root surface area,root volume,plant height,leaf area,dry aboveground weight,dry underground weight and root‑shoot ratio of maize seedlings under drought stress overall significantly increased after sprayed with carbon‑adsorbed polyglutamic acid;the relative water content(RWC),chlorophyll content,Fv/Fm,soluble protein content,activities of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) of maize leaves significantly increased after sprayed with carbon‑adsorbed polyglutamic acid. Principal component analysis showed that RWC,chlorophyll content and soluble protein content of maize leaves were the key indexes in alleviating the damage caused by drought stress to maize after spraying carbon‑adsorbed polyglutamic acid. Grey correlation analysis showed that the chlorophyll content,root‑shoot ratio,Fv/Fm,POD and SOD activities all had higher correlation coefficients with the total dry weight,which were 0. 566 4,0. 454 9,0. 449 1,0. 429 9 and 0. 418 2,respectively. The results showed that carbon‑adsorbed polyglutamic acid enhanced the tolerance of maize to drought stress at seedling stage,and could be used as drought stress reliever.

Key words: Carbon?adsorbed polyglutamic acid, Maize(Zea mays L.), Seedling stage, Drought, Antidote

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