草地学报 ›› 2023, Vol. 31 ›› Issue (5): 1461-1468.DOI: 10.11733/j.issn.1007-0435.2023.05.021

• 研究论文 • 上一篇    下一篇

外源油菜素内酯引发对劣变燕麦种子抗氧化特性的影响

王勃, 夏方山, 董秋丽, 岑慧芳, 李尹琳, 张杰敏   

  1. 山西农业大学草业学院, 山西 太谷 030801
  • 收稿日期:2022-11-11 修回日期:2023-01-01 出版日期:2023-05-15 发布日期:2023-05-31
  • 通讯作者: 夏方山,E-mail:dqlxfs8583@163.com
  • 作者简介:王勃(1998-),女,汉,山西晋城人,硕士研究生,主要从事草种子科学研究,E-mail:wangbo10898@163.com
  • 基金资助:
    山西农业大学“十四五”生物育种工程项目(YZGC134);山西省重点研发计划项目(202102140601006,201903D221091);内蒙古大学“省部共建草原家畜生殖调控与繁育”国家重点实验室开放课题(2021KF0303)资助

Effect of Exogenous Brassinosteroids Priming on Antioxidant Characteristics of Deteriorated Oat Seeds

WANG Bo, XIA Fang-shan, DONG Qiu-li, CEN Hui-fang, LI Yin-lin, ZHANG Jie-min   

  1. College of Grassland Science, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China
  • Received:2022-11-11 Revised:2023-01-01 Online:2023-05-15 Published:2023-05-31

摘要: 为探讨外源油菜素内酯引发对劣变种子抗氧化能力的影响,试验采用燕麦(Avena sativa)种子为材料,人工老化后经不同浓度(0,0.01,0.10,0.50,1.00,10.00 μmol·L-1)的油菜素内酯(Brassinosteroids,BR)溶液引发0(CK),1,6,12,18和24 h,分析了其发芽率、超氧化物歧化酶(Superoxide dismutase,SOD)、过氧化氢酶(Catalase,CAT)、抗坏血酸过氧化物酶(Ascorbate peroxidase,APX)、谷胱甘肽还原酶(glutathione reductase,GR)活性及丙二醛(Maloddialdehyde,MDA)含量的变化规律。结果表明:低浓度(0.01~0.50 μmol·L-1)的BR可提高燕麦种子的发芽率,增加其SOD,CAT,APX和GR活性,降低其MDA含量;而BR浓度为10.00 μmol·L-1时(除引发18 h外),其发芽率、CAT、APX和GR活性均低于CK,增加MDA含量。浓度为0.01 μmol·L-1的油菜素内酯引发24 h可能是缓解燕麦种子老化的最佳处理。

关键词: 油菜素内酯, 燕麦, 种子老化, 种子引发, 抗氧化性能

Abstract: In order to explore the effect of exogenous brassinosteroid priming on the antioxidant capacity of deteriorated seeds,Oat (Avena sativa) seeds were used as materials,and tested them with different concentrations (0,0.01,0.10,0.50,1.00,10.00 μmol·L-1) brassinosteroid solution initiated for 0 (CK),1,6,12,18 and 24 h durations. The changes of germination rate,superoxide dismutase (SOD),catalase (CAT),ascorbate peroxidase (APX),glutathione reductase (GR) and malondialdehyde (MDA) content were analyzed. The results showed that low concentration (0.01~0.50 μmol·L-1) of BR improved the germination rate of oat seeds,and increase the activities of SOD,CAT,APX and GR,and reduce the content of MDA in the oat seeds. When the concentration of BR reached 10.00 μmol·L-1 (except for 18 h initiation),the germination rate,CAT,APX and GR activities were lower than those of the seeds in CK,and the MDA content was higher. Priming with 0.01 μmol·L-1 brassinolide for 24 h may be the best treatment to alleviate the aging of oat seeds.

Key words: Brassinosteroids, Oats, Seed aging, Seed priming, Oxidation resistance

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