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中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (4): 60-64.doi: 10.11924/j.issn.1000-6850.casb17010006

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

硼胁迫对不同类型西瓜活性氧代谢与抗氧化系统的影响

陈 晟,施木田,吴宇芬,李永裕   

  1. 福建农林大学园艺学院 福州,福建农林大学园艺学院 福州,福建省农科院农业生物资源研究所,福建农林大学园艺学院 福州
  • 收稿日期:2017-01-04 修回日期:2017-08-01 接受日期:2017-08-23 出版日期:2018-02-26 发布日期:2018-02-26
  • 通讯作者: 陈 晟
  • 基金资助:
    ‘优质中小型西瓜产业化技术研发集成与示范’福建省科技厅公益类项目(2014R1018-12S)；‘福建西甜瓜、苦瓜品种资源收集、鉴定与保存’福建省种业创新与产业化工程项目(FJZZZY-1524)

Effects of Boron Stress on Active Oxygen Metabolism and Antioxidant System of Different Genotypes of Watermelon Cultivars

  • Received:2017-01-04 Revised:2017-08-01 Accepted:2017-08-23 Online:2018-02-26 Published:2018-02-26

摘要： 【目的】为了研究硼对不同类型西瓜活性氧代谢与抗氧化系统的影响。【方法】以籽瓜、“黑美人”西瓜和野生西瓜为材料,设0.00,0.05,0.20,0.60 mmol/L 四个硼浓度,测定三种类型西瓜O2.?、H2O2和MDA含量及SOD、POD和CAT活性。【结果】结果表明：三种类型西瓜的O2和H2O2产生速率在硼胁迫下均显著提高,且高硼胁迫的西瓜O2.?和H2O2产生速率都大于缺硼胁迫,并导致MDA的积累。硼胁迫使三种类型西瓜的POD活性上升,CAT活性下降。籽瓜和“黑美人”的SOD活性下降,野生西瓜SOD活性上升。【结论】硼胁迫引起西瓜的活性氧爆发,并启动了西瓜的抗氧化系统,但仍然无法完全抵御硼胁迫带来的活性氧伤害,野生西瓜对硼胁迫的抗逆最强。

关键词: FY-3/VIRR, FY-3/VIRR, 地表温度反演, 分裂窗算法, 植被覆盖度

Abstract: The paper aims to study the effects of boron stress on active oxygen metabolism and antioxidant system of different genotypes of watermelon cultivars. Seed- used watermelon, watermelon cultivars ‘Heimeiren’and wild watermelon were used to test the activities of SOD, POD, CAT and the content of O2·-, H2O2, MDA under 0.00, 0.05, 0.20, 0.60 mmol/L boron concentration. The results showed that lots of ROC (O2 ·- and H2O2) were produced in watermelon under boron stress, ROC led to MDA accumulation. The high boron stress led to more ROC accumulation in the leaf of three watermelon cultivars. Under boron stress, POD activities were increased in watermelon, CAT activities were decreased. The SOD activities of seed- used watermelon and‘Heimeiren’were reduced. The SOD activities of wild watermelon were increased. Boron stress led to ROC accumulation. ROC accumulation activated the antioxidant system of watermelon. But the antioxidant system of watermelon could not completely resist active oxygen damage under boron stress. Stress resistance of seed-used watermelon was the strongest.